A highly toxic, colorless, nonflammable gas. It is used as a pharmaceutical aid and antioxidant. It is also an environmental air pollutant.
An element that is a member of the chalcogen family. It has an atomic symbol S, atomic number 16, and atomic weight [32.059; 32.076]. It is found in the amino acids cysteine and methionine.
Nitrogen oxide (NO2). A highly poisonous gas. Exposure produces inflammation of lungs that may only cause slight pain or pass unnoticed, but resulting edema several days later may cause death. (From Merck, 11th ed) It is a major atmospheric pollutant that is able to absorb UV light that does not reach the earth's surface.
Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or material. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS.
The presence of contaminants or pollutant substances in the air (AIR POLLUTANTS) that interfere with human health or welfare, or produce other harmful environmental effects. The substances may include GASES; PARTICULATE MATTER; or volatile ORGANIC CHEMICALS.
A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.
Inorganic oxides of sulfur.
The unstable triatomic form of oxygen, O3. It is a powerful oxidant that is produced for various chemical and industrial uses. Its production is also catalyzed in the ATMOSPHERE by ULTRAVIOLET RAY irradiation of oxygen or other ozone precursors such as VOLATILE ORGANIC COMPOUNDS and NITROGEN OXIDES. About 90% of the ozone in the atmosphere exists in the stratosphere (STRATOSPHERIC OZONE).
Inorganic or organic compounds that contain sulfur as an integral part of the molecule.
An aspartate aminotransferase found in the CYTOPLASM.
Inorganic salts of sulfurous acid.
An aspartate aminotransferase found in MITOCHONDRIA.
The ash, dust, gases, and lava released by volcanic explosion. The gases are volatile matter composed principally of about 90% water vapor, and carbon dioxide, sulfur dioxide, hydrogen, carbon monoxide, and nitrogen. The ash or dust is pyroclastic ejecta and lava is molten extrusive material consisting mainly of magnesium silicate. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Inorganic compounds that contain carbon as an integral part of the molecule but are not derived from hydrocarbons.
Particles of any solid substance, generally under 30 microns in size, often noted as PM30. There is special concern with PM1 which can get down to PULMONARY ALVEOLI and induce MACROPHAGE ACTIVATION and PHAGOCYTOSIS leading to FOREIGN BODY REACTION and LUNG DISEASES.
Acidic water usually pH 2.5 to 4.5, which poisons the ecosystem and adversely affects plants, fishes, and mammals. It is caused by industrial pollutants, mainly sulfur oxides and nitrogen oxides, emitted into the atmosphere and returning to earth in the form of acidic rain water.
Stable sulfur atoms that have the same atomic number as the element sulfur, but differ in atomic weight. S-33, 34, and 36 are stable sulfur isotopes.
Collection, analysis, and interpretation of data about the frequency, distribution, and consequences of disease or health conditions, for use in the planning, implementing, and evaluating public health programs.
Inorganic compounds that contain silicon as an integral part of the molecule.
The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
Carbon monoxide (CO). A poisonous colorless, odorless, tasteless gas. It combines with hemoglobin to form carboxyhemoglobin, which has no oxygen carrying capacity. The resultant oxygen deprivation causes headache, dizziness, decreased pulse and respiratory rates, unconsciousness, and death. (From Merck Index, 11th ed)
Inorganic or organic acids that contain sulfur as an integral part of the molecule.
The state of the ATMOSPHERE over minutes to months.
Compounds that accept electrons in an oxidation-reduction reaction. The reaction is induced by or accelerated by exposure to electromagnetic radiation in the spectrum of visible or ultraviolet light.
A mixture of smoke and fog polluting the atmosphere. (Dorland, 27th ed)
Relating to the size of solids.
The fifth planet in order from the sun. It is one of the five outer planets of the solar system. Its sixteen natural satellites include Callisto, Europa, Ganymede, and Io.
Diseases of the respiratory system in general or unspecified or for a specific respiratory disease not available.
Nitric acid (HNO3). A colorless liquid that is used in the manufacture of inorganic and organic nitrates and nitro compounds for fertilizers, dye intermediates, explosives, and many different organic chemicals. Continued exposure to vapor may cause chronic bronchitis; chemical pneumonitis may occur. (From Merck Index, 11th ed)
The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed)
Inorganic and organic derivatives of sulfuric acid (H2SO4). The salts and esters of sulfuric acid are known as SULFATES and SULFURIC ACID ESTERS respectively.
Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL).
Severe irritant and vesicant of skin, eyes, and lungs. It may cause blindness and lethal lung edema and was formerly used as a war gas. The substance has been proposed as a cytostatic and for treatment of psoriasis. It has been listed as a known carcinogen in the Fourth Annual Report on Carcinogens (NTP-85-002, 1985) (Merck, 11th ed).
Inorganic salts of sulfuric acid.
Inorganic oxides that contain nitrogen.
The atmospheric properties, characteristics and other atmospheric phenomena especially pertaining to WEATHER or CLIMATE.
The exposure to potentially harmful chemical, physical, or biological agents by inhaling them.
The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)
Chemical groups containing the covalent sulfur bonds -S-. The sulfur atom can be bound to inorganic or organic moieties.
The status of health in urban populations.
A large or important municipality of a country, usually a major metropolitan center.
Units that convert some other form of energy into electrical energy.
Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed)
Inorganic salts of thiosulfuric acid possessing the general formula R2S2O3.
Gases, fumes, vapors, and odors escaping from the cylinders of a gasoline or diesel internal-combustion engine. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Random House Unabridged Dictionary, 2d ed)
All deaths reported in a given population.
Analogs and derivatives of atropine.
A distribution function used to describe the occurrence of rare events or to describe the sampling distribution of isolated counts in a continuum of time or space.
A tough, malleable, iron-based alloy containing up to, but no more than, two percent carbon and often other metals. It is used in medicine and dentistry in implants and instrumentation.
Exposure of the female parent, human or animal, to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals that may affect offspring. It includes pre-conception maternal exposure.
The determination of the concentration of a given component in solution (the analyte) by addition of a liquid reagent of known strength (the titrant) until an equivalence point is reached (when the reactants are present in stoichiometric proportions). Often an indicator is added to make the equivalence point visible (e.g., a change in color).
A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
A natural fuel formed by partial decomposition of vegetable matter under certain environmental conditions.
A measure of the amount of WATER VAPOR in the air.
Thorium oxide (ThO2). A radiographic contrast agent that was used in the early 1930s through about 1954. High rates of mortality have been linked to its use and it has been shown to cause liver cancer.
A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).
Physiologically, the opposition to flow of air caused by the forces of friction. As a part of pulmonary function testing, it is the ratio of driving pressure to the rate of air flow.
Colloids with a gaseous dispersing phase and either liquid (fog) or solid (smoke) dispersed phase; used in fumigation or in inhalation therapy; may contain propellant agents.
Any enterprise centered on the processing, assembly, production, or marketing of a line of products, services, commodities, or merchandise, in a particular field often named after its principal product. Examples include the automobile, fishing, music, publishing, insurance, and textile industries.
Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.
Inorganic binary compounds of iodine or the I- ion.
The contamination of indoor air.
A phylum of anoxygenic, phototrophic bacteria including the family Chlorobiaceae. They occur in aquatic sediments, sulfur springs, and hot springs and utilize reduced sulfur compounds instead of oxygen.
Oxidoreductases with specificity for oxidation or reduction of SULFUR COMPOUNDS.
Sulfur hexafluoride. An inert gas used mainly as a test gas in respiratory physiology. Other uses include its injection in vitreoretinal surgery to restore the vitreous chamber and as a tracer in monitoring the dispersion and deposition of air pollutants.
Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.

Air pollution, pollens, and daily admissions for asthma in London 1987-92. (1/445)

BACKGROUND: A study was undertaken to investigate the relationship between daily hospital admissions for asthma and air pollution in London in 1987-92 and the possible confounding and modifying effects of airborne pollen. METHODS: For all ages together and the age groups 0-14, 15-64 and 65+ years, Poisson regression was used to estimate the relative risk of daily asthma admissions associated with changes in ozone, sulphur dioxide, nitrogen dioxide and particles (black smoke), controlling for time trends, seasonal factors, calendar effects, influenza epidemics, temperature, humidity, and autocorrelation. Independent effects of individual pollutants and interactions with aeroallergens were explored using two pollutant models and models including pollen counts (grass, oak and birch). RESULTS: In all-year analyses ozone was significantly associated with admissions in the 15-64 age group (10 ppb eight hour ozone, 3.93% increase), nitrogen dioxide in the 0-14 and 65+ age groups (10 ppb 24 hour nitrogen dioxide, 1.25% and 2.96%, respectively), sulphur dioxide in the 0-14 age group (10 micrograms/m3 24 hour sulphur dioxide, 1.64%), and black smoke in the 65% age group (10 micrograms/m3 black smoke, 5.60%). Significant seasonal differences were observed for ozone in the 0-14 and 15-64 age groups, and in the 0-14 age group there were negative associations with ozone in the cool season. In general, cumulative lags of up to three days tended to show stronger and more significant effects than single day lags. In two-pollutant models these associations were most robust for ozone and least for nitrogen dioxide. There was no evidence that the associations with air pollutants were due to confounding by any of the pollens, and little evidence of an interaction between pollens and pollution except for synergism of sulphur dioxide and grass pollen in children (p < 0.01). CONCLUSIONS: Ozone, sulphur dioxide, nitrogen dioxide, and particles were all found to have significant associations with daily hospital admissions for asthma, but there was a lack of consistency across the age groups in the specific pollutant. These associations were not explained by confounding by airborne pollens nor was there convincing evidence that the effects of air pollutants and airborne pollens interact in causing hospital admissions for asthma.  (+info)

Comparison between two districts of the effects of an air pollution intervention on bronchial responsiveness in primary school children in Hong Kong. (2/445)

STUDY OBJECTIVE: This study examined the impact on children's respiratory health of a government air quality intervention that restricted the sulphur content of fuels to 0.5% from July 1990 onwards. DESIGN/SETTING/PARTICIPANTS: This study examined the changes, one and two years after the introduction of the intervention, in airway hyperreactivity of non-asthmatic and non-wheezing, primary 4, 5, and 6, school children aged 9-12 years living in a polluted district compared with those in a less polluted district. Bronchial hyperreactivity (BHR)(a 20% decrease in FEV1 provoked by a cumulative dose of histamine less than 7.8 mumol) and bronchial reactivity slope (BR slope) (percentage change in logarithmic scale in FEV1 per unit dose of histamine) were used to estimate responses to a histamine challenge. The between districts differences after the intervention were studied to assess the effectiveness of the intervention. MAIN RESULTS: In cohorts, comparing measurements made before the intervention and one year afterwards, both BHR and BR slope declined from 29% to 16% (p = 0.026) and from 48 to 39 (p = 0.075) respectively in the polluted district; and from 21% to 10% (p = 0.001) and 42 to 36 (p > 0.100) in the less polluted district. Comparing measurements made in 1991 (one year after intervention) with those in 1992 (two years after intervention), only the polluted district showed a significant decline from 28% to 12% (p = 0.016) and from 46 to 35 (p = 0.014), for BHR and BR slope respectively, with a greater decline in both responses (p = 0.018 and 0.073) than in the less polluted district. CONCLUSION: Bronchial hyperresponsiveness tests can be used to support the evaluation of an air quality intervention. The demonstrated reduction in bronchial hyperresponsiveness is an indication of the effectiveness of the intervention.  (+info)

Association of air pollution with daily GP consultations for asthma and other lower respiratory conditions in London. (3/445)

BACKGROUND: Very few published studies have looked at the effects of air pollution on health in the primary care setting. As part of a large study to examine the association between air pollution and a number of health outcomes, the relationship between daily GP consultations for asthma and other lower respiratory diseases (LRD) and air pollution in London was investigated. METHODS: Time-series analysis of daily numbers of GP consultations controlling for time trends, seasonal factors, day of week cycles, influenza, weather, pollen levels, and serial correlation was performed. Consultation data were available from between 268 718 and 295 740 registered patients from 45-47 London practices contributing to the General Practice Research Database during 1992-4. RESULTS: Positive associations, weakly significant and consistent across lags, were observed between asthma consultations and nitrogen dioxide (NO2) and carbon monoxide (CO) in children and particulate matter of less than 10 microm in diameter (PM10) in adults, and between other LRD consultations and sulphur dioxide (SO2) in children. A consistently negative association with ozone in children was observed in both disease categories. The effect estimates of most pollutants were much larger when analysed separately by season, particularly in the children: percentage change in asthma consultations during the warm season (April-September) for a 10-90th percentile increase in 24 hour NO2 lagged by one day = 13.2% (95% CI 5.6 to 21.3), with CO = 11.4% (95% CI 3.3 to 20.0), and with SO2 = 9.0% (95% CI 2.2 to 16.2). In adults the only association consistent over different lag periods was with PM10 = 9.2% (3.7 to 15.1). The associations of pollution and consultations for LRD were increased mainly in the winter months: percentage change in consultations by children in winter with NO2 = 7.2% (95% CI 2.8 to 11.6), CO = 6.2% (95% CI 2.3 to 10.2), and SO2 = 5.8% (95% CI 1.6 to 10.2). CONCLUSIONS: There are associations between air pollution and daily consultations for asthma and other lower respiratory disease in London. The most significant associations were observed in children and the most important pollutants were NO2, CO, and SO2. In adults the only consistent association was with PM10.  (+info)

Galileo imaging of atmospheric emissions from Io. (4/445)

The Galileo spacecraft has detected diffuse optical emissions from Io in high-resolution images acquired while the satellite was eclipsed by Jupiter. Three distinct components make up Io's visible emissions. Bright blue glows of more than 300 kilorayleighs emanate from volcanic plumes, probably due to electron impact on molecular sulfur dioxide. Weaker red emissions, possibly due to atomic oxygen, are seen along the limbs, brighter on the pole closest to the plasma torus. A faint green glow appears concentrated on the night side of Io, possibly produced by atomic sodium. Io's disk-averaged emission diminishes with time after entering eclipse, whereas the localized blue glows brighten instead.  (+info)

Point source sulphur dioxide peaks and hospital presentations for asthma. (5/445)

OBJECTIVE: To examine the effect on hospital presentations for asthma of brief exposures to sulphur dioxide (SO2) (within the range 0-8700 micrograms/m3) emanating from two point sources in a remote rural city of 25,000 people. METHODS: A time series analysis of SO2 concentrations and hospital presentations for asthma was undertaken at Mount Isa where SO2 is released into the atmosphere by a copper smelter and a lead smelter. The study examined 5 minute block mean SO2 concentrations and daily hospital presentations for asthma, wheeze, or shortness of breath. Generalised linear models and generalised additive models based on a Poisson distribution were applied. RESULTS: There was no evidence of any positive relation between peak SO2 concentrations and hospital presentations or admissions for asthma, wheeze, or shortness of breath. CONCLUSION: Brief exposures to high concentrations of SO2 emanating from point sources at Mount Isa do not cause sufficiently serious symptoms in asthmatic people to require presentation to hospital.  (+info)

Respiratory tract inflammation during the induction of chronic bronchitis in rats: role of C-fibres. (6/445)

The hypothesis that chronic stimulation of C-fibres by inhaled irritants contributes to the inflammatory changes that occur during the development of chronic bronchitis was tested. The effect of neonatal capsaicin pretreatment on the development of respiratory tract inflammation was examined in a rat model of chronic bronchitis induced by SO2 exposure. Adult capsaicin- and vehicle-treated rats were exposed to SO2 (250 parts per million (ppm) 5 h x day(-1)) for one day, 2 weeks or 4 weeks. Nasal (NL), airway (AL) and bronchoalveolar (BAL) lavages were performed and the number and types of cells in the lavage fluids measured. SO2-induced changes in ventilation were also measured on day 1 of SO2 exposure and in the 3rd and 5th week of exposure. In the vehicle-treated rats, neutrophils became elevated in NL after just one day of SO2 exposure, in AL after 2 weeks, and in the BAL after 4 weeks. In comparison to vehicle animals, more neutrophils were recovered in the AL of capsaicin-treated rats after one day of SO2 (p=0.012), and in the BAL after 2 or 4 weeks (p=0.004 and p=0.01, respectively). On day 1, SO2 caused a transient increase in tidal volume and a sustained decrease in frequency that was not different in capsaicin- and vehicle-treated rats. With continued exposure, these ventilatory responses to SO2 were attenuated in both groups of rats. These data support the hypothesis that the presence of C-fibres limits or delays the inflammation that occurs during the development of chronic bronchitis induced by SO2 exposure. The protective effect of C-fibres is not the result of ventilatory responses to stimulation of these afferents.  (+info)

Sulphur dioxide sensitivity and plasma antioxidants in adult subjects with asthma. (7/445)

OBJECTIVES: To screen adult subjects with asthma for sensitivity to inhaled sulphur dioxide (SO2) and identify subject characteristics associated with that sensitivity. Medication use, symptoms, and plasma antioxidant nutrients between SO2 responders and non-responders were compared. METHODS: Adult subjects (ages 18-39 years) with asthma were exposed to 0.5 ppm SO2 for 10 minutes during moderate exercise. Pulmonary function tests and symptom ratings were assessed before and after exposure (n = 47). A subject was classified as sensitive to SO2 if forced expiratory volume in 1 second (FEV1) showed a drop > or = 8% over baseline. Blood samples were obtained from subjects (n = 38) before the SO2 challenge; plasma ascorbate, alpha-tocopherol, retinol, carotenoids, and lipids were measured. RESULTS: Of the 47 subjects screened, 53% had a drop in FEV1 > or = 8% (ranging from -8% to -44%). Among those 25 subjects, the mean drop in FEV1 was -17.2%. Baseline pulmonary function indices (FEV1% of predicted and FEV1/FVC% (forced vital capacity)) did not predict sensitivity to SO2. Although use of medication was inversely related to changes in pulmonary function after SO2 (p < 0.05), both SO2 responders and non-responders were represented in each medication category. Total symptom scores after exposure were significantly correlated with changes in FEV1 (p < 0.05), FVC (p < 0.05), and peak expiratory flow (PEF) (p < 0.01) but not forced expiratory flow between 25% and 75% vital capacity (FEF25-75). Plasma beta-carotene concentrations were inversely associated with PEF values and ascorbate concentrations were inversely associated with FEV1 and FEV1/FVC (p = 0.05 in all cases). High density lipoprotein concentrations were positively correlated with FEV1% of predicted (p < 0.05) and inversely correlated with change in FEF25-75 (p < 0.05) after SO2. CONCLUSION: These results show that the response to SO2 among adults with mild to moderate asthma is very diverse. Severity of asthma defined by medication category was not a predictor of sensitivity to SO2. Lung function values were associated with beta-carotene and ascorbate concentrations in plasma; however, plasma antioxidant nutrient concentrations were not associated with sensitivity to inhaled SO2.  (+info)

Climate change as a regulator of tectonics on Venus. (8/445)

Tectonics, volcanism, and climate on Venus may be strongly coupled. Large excursions in surface temperature predicted to follow a global or near-global volcanic event diffuse into the interior and introduce thermal stresses of a magnitude sufficient to influence widespread tectonic deformation. This sequence of events accounts for the timing and many of the characteristics of deformation in the ridged plains of Venus, the most widely preserved volcanic terrain on the planet.  (+info)

Some common examples of respiratory tract diseases include:

1. Pneumonia: An infection of the lungs that can be caused by bacteria, viruses, or fungi.
2. Bronchitis: Inflammation of the airways (bronchi) that can cause coughing, wheezing, and difficulty breathing.
3. Asthma: A chronic condition that causes inflammation and narrowing of the airways, leading to symptoms such as wheezing, coughing, and shortness of breath.
4. Chronic obstructive pulmonary disease (COPD): A progressive condition that makes it difficult to breathe due to damage to the lungs over time.
5. Tuberculosis: An infectious disease caused by the bacteria Mycobacterium tuberculosis that primarily affects the lungs.
6. Laryngitis: Inflammation of the voice box (larynx) that can cause hoarseness and difficulty speaking.
7. Tracheitis: Inflammation of the trachea, or windpipe, that can cause coughing, fever, and difficulty breathing.
8. Croup: An infection of the throat and lungs that can cause a barky cough and difficulty breathing.
9. Pleurisy: Inflammation of the lining around the lungs (pleura) that can cause chest pain, fever, and difficulty breathing.
10. Pertussis (whooping cough): An infectious disease caused by the bacteria Bordetella pertussis that can cause coughing fits and difficulty breathing.

These are just a few examples of the many different types of respiratory tract diseases that exist. Each one has its own unique symptoms, causes, and treatment options.

Some common examples of respiration disorders include:

1. Asthma: A chronic condition that causes inflammation and narrowing of the airways, leading to wheezing, coughing, and shortness of breath.
2. Chronic obstructive pulmonary disease (COPD): A progressive lung disease that makes it difficult to breathe, caused by exposure to pollutants such as cigarette smoke.
3. Pneumonia: An infection of the lungs that can cause fever, chills, and difficulty breathing.
4. Bronchitis: Inflammation of the airways that can cause coughing and difficulty breathing.
5. Emphysema: A condition where the air sacs in the lungs are damaged, making it difficult to breathe.
6. Sleep apnea: A sleep disorder that causes a person to stop breathing for short periods during sleep, leading to fatigue and other symptoms.
7. Cystic fibrosis: A genetic disorder that affects the respiratory system and digestive system, causing thick mucus buildup and difficulty breathing.
8. Pulmonary fibrosis: A condition where the lungs become scarred and stiff, making it difficult to breathe.
9. Tuberculosis (TB): A bacterial infection that primarily affects the lungs and can cause coughing, fever, and difficulty breathing.
10. Lung cancer: A type of cancer that originates in the lungs and can cause symptoms such as coughing, chest pain, and difficulty breathing.

These are just a few examples of respiration disorders, and there are many other conditions that can affect the respiratory system and cause breathing difficulties. If you are experiencing any symptoms of respiration disorders, it is important to seek medical attention to receive an accurate diagnosis and appropriate treatment.

Asthma can cause recurring episodes of wheezing, coughing, chest tightness, and shortness of breath. These symptoms occur when the muscles surrounding the airways contract, causing the airways to narrow and swell. This can be triggered by exposure to environmental allergens or irritants such as pollen, dust mites, pet dander, or respiratory infections.

There is no cure for asthma, but it can be managed with medication and lifestyle changes. Treatment typically includes inhaled corticosteroids to reduce inflammation, bronchodilators to open up the airways, and rescue medications to relieve symptoms during an asthma attack.

Asthma is a common condition that affects people of all ages, but it is most commonly diagnosed in children. According to the American Lung Association, more than 25 million Americans have asthma, and it is the third leading cause of hospitalization for children under the age of 18.

While there is no cure for asthma, early diagnosis and proper treatment can help manage symptoms and improve quality of life for those affected by the condition.

A sulfur dioxide plume from Halemaʻumaʻu, which glows at night Sulfur dioxide in the world on April 15, 2017. Note that sulfur ... Most sulfur dioxide is produced by the combustion of elemental sulfur. Some sulfur dioxide is also produced by roasting pyrite ... Sulfur dioxide for this purpose is made when sulfur combines with oxygen. The method of converting sulfur dioxide to sulfuric ... Sulfur dioxide is the product of the burning of sulfur or of burning materials that contain sulfur: S + O2 → SO2, ΔH = −297 kJ/ ...
In organometallic chemistry, metal sulfur dioxide complexes are complexes that contain sulfur dioxide, SO2, bonded to a ... Sulfur dioxide forms complexes with many transition metals. Most numerous are complexes with metals i in oxidation state 0 or + ... Sulfur Dioxide and Other Molecules". In Stone, F. G. A.; West, R. (eds.). Advances in Organometallic Chemistry. Vol. 12. pp. 31 ... The main reaction of sulfur dioxide promoted by transition metals is its reduction by hydrogen sulfide. Known as the Claus ...
Gas flares release a variety of potentially poisonous chemicals such as nitrogen dioxides; sulfur dioxide; volatile organic ... Nigeria's petroleum is classified mostly as "light" and "sweet", as the oil is largely free of sulfur. Nigeria is the largest ... The methane is accompanied by carbon dioxide, of which Nigeria is estimated to have emitted more than 34.38 million tons in ... Both types are paraffinic and low in sulfur. Nigeria's economy and budget have been largely supported from income and revenues ...
"Sulfur Dioxide". US Environmental Protection Agency. 16 November 2016. "AirData". US Environmental Protection Agency. Archived ... of all emissions of sulfur dioxide, the main component of acid rain. Electricity generation is the fourth highest combined ... Not only do they produce carbon dioxide from the ignition of natural gas, but also the extraction of gas when mined releases a ... Coal-fired power stations emit over 10 Gt of carbon dioxide each year, about one fifth of world greenhouse gas emissions, so ...
The release of sulfur dioxide is harmful to the life of humans and other organisms. The inhaling of sulfur dioxide leads to ... "ATSDR - Public Health Statement: Sulfur Dioxide". www.atsdr.cdc.gov. "Sulfur Dioxide". Archived from the original on 2013-05-19 ... The World Health Organization has set up a limit for the emission of sulfur dioxide to 20 μg/m3 24-hour mean. In Harare, ... Hence, it can be concluded that the inhaling of sulfur dioxide is tremendously detrimental to the life of organisms. Not to ...
"Sulfur Dioxide , Air & Radiation , US EPA". http://www3.epa.gov/airquality/sulfurdioxide/pdfs/20120320factsheet.pdf. Archived ... Sulfur oxides (SOx): SOx refers to the oxides of sulfur, a highly reactive group of gases. SO2 is of greatest interest and is ... Among these are nitric oxide (NO), nitrous oxide (N2O), and nitrogen dioxide (NO2), all of which are covered in the NAAQS. NO2 ... sulfur oxides (SOx), and nitrogen oxides (NOx). These are typically emitted from many sources in industry, mining, ...
... and sodium pyrosulfite is converted to a concentrated stream of sulfur dioxide and sodium sulfite. The sulfur dioxide can be ... Recent Experience of the Wellman-Lord Sulfur Dioxide Recovery Process". In John B. Pfeiffer (ed.). Sulfur Removal and Recovery ... In this process, sulfur dioxide from flue gas is absorbed in a sodium sulfite solution in water forming sodium bisulfite; other ... The Wellman-Lord process is a regenerable process to remove sulfur dioxide from flue gas (flue-gas desulfurization) without ...
... sulfur dioxide, and nitrogen dioxide. Sensors like this were once expensive, but the 2010s saw a trend towards cheaper portable ... Sulphur dioxide (SO2) is measured by fluorescence spectroscopy. This involves firing ultraviolet light at a sample of the air ... "Nitrogen Dioxide in the United Kingdom: Summary" (PDF). Air Quality Expert Group. Defra. p. 4. Retrieved 29 March 2022. "Sulfur ... Flame photometric analyzers are used for measuring other sulphur compounds in the air. Carbon monoxide (CO) and carbon dioxide ...
"Sulfur Dioxide Basics". US EPA. 2016-06-02. Retrieved 2019-05-12. Tchounwou, Paul B.; Yedjou, Clement G.; Patlolla, Anita K.; ... For example, high levels of sulfur oxides (SOx) can damage plants and stunt their growth. Sulfur oxides also contribute to acid ...
It appears in form of white or yellowish-white crystals with an odor of sulfur dioxide. For properties of sodium bisulfite, ... The production of sodium bisulfite used as a food additive can be described by the combination of sulfur dioxide gas with ... Kohl, Arthur L.; Nielsen, Richard B. (1997). "Sulfur Dioxide Removal". Gas Purification. Gulf Professional Publishing. pp. 554- ... evaluation of sulfur dioxide (E 220), sodium sulfite (E 221), sodium bisulfite (E 222), sodium metabisulfite (E 223), potassium ...
Sulfur dioxide emissions by volcanoes. Mount Pinatubo: 20 million tons of sulfur dioxide. TOMS sulfur dioxide from the June 15 ... ash aerosol and sulfur dioxide) is quite independent of the eruption VEI. When sulfur dioxide (boiling point at standard state ... Sarychev Peak: the sulphur dioxide cloud generated by the eruption on June 12, 2009 (in Dobson units). Yellowstone sits on top ... Some eruptions cooled the global climate-inducing a volcanic winter-depending on the amount of sulfur dioxide emitted and the ...
... is a common wine or must additive, in which it forms sulfur dioxide (SO2). Sulfur dioxide is a ... 2 SO2 + 2 KOH → K2S2O5 + H2O It decomposes at 190 °C, yielding potassium sulfite and sulfur dioxide: K2S2O5 → K2SO3 + SO2 It is ... Potassium metabisulfite can be prepared by treating a solution of potassium hydroxide with sulfur dioxide. ...
The sulfur dioxide released by these salts kills yeasts, fungi, and bacteria in the grape juice before fermentation. Once the ... Sulfur dioxide (SO2) protects wine from not only oxidation, but also from bacteria. Without sulfites, grape juice would quickly ... "Preservative: Sulfur Dioxide and Sulfites". World Health Organization. Arora H, Kaur R (April 2008). "The role of diet in ... "Sulphite Free Diet: sulphites, sulfites and sulphur dioxide in food". Organic Wine Club. Safonov D. "7 Myths of Natural Wines ...
This includes sulfur dioxide, and the limit is on the milligrams per kilogram or per litre of sulfur dioxide equivalent. In ... 3 thiosulfate ion SO2 sulfur dioxide SO3 sulfur trioxide (a sulfate precursor) Category:Sulfites for a list of sulfites. Grant ... Sulfur dioxide (SO2) protects wine not only from oxidation, but also from bacteria. Organic wines are not necessarily sulfite- ... "Preservative: Sulfur Dioxide and Sulfites". World Health Organization. Arora H, Kaur R (April 2008). "The role of diet in ...
It also reacts with sulfur dioxide to give the same acid chloride and thionyl chloride. It reacts with hydrogen fluoride in 1,2 ... 1. Reaction with Sulfur Dioxide". The Journal of Organic Chemistry. 41 (22): 3569-3574. doi:10.1021/jo00884a017. S2CID ...
Mount Pinatubo 1991 sulfur dioxide. Sulfur dioxide emissions from volcanoes. "Toms-Ep". "News". Total Ozone Mapping ...
Sulfur oxides (SOx) - Particularly sulfur dioxide. Produced by the combustion of coal and petroleum. NOx (nitrogen oxides, ... For sulfur dioxide and volatile organic compounds it is sufficient to apply the measures already adopted and implemented in the ... kind of air pollution and results from large amounts of coal burning in an area caused by a mixture of smoke and sulfur dioxide ... The major primary pollutants produced by human activity include: Carbon dioxide (CO2) - The most emitted form of human caused ...
It reacts with liquid sulfur dioxide. At room temperature tetramethylammonium nitratoborate is stable for months. It does not ...
The main disinfectant used was sulfur dioxide. "Quarantine Stations , Quarantine , CDC". 17 April 2019. "Blackbeard Island ...
It is also sensitive to sulfur dioxide. A 1994 study by Byron Lamont and colleagues from Curtin University found that Banksia ...
Sulfur dioxide emissions saw a 64% decline. Fine particulates emissions in the area are now less than 60% of the national ...
... more than 253,000 tonnes of sulfur dioxide; and 618,000 tonnes of nitrogen oxide. The company noted, "If Palo Verde were to ... at Palo Verde have offset the emission of almost 484 million tonnes of carbon dioxide (the equivalent of taking up to 84 ...
Nash III, T.H.; Gries, C. (2002). "Lichens as bioindicators of sulfur dioxide" (PDF). Symbiosis. 33 (1): 1-21. Zschau, T.; ...
The letter S is used: In a chemical formula to represent sulfur. For example, SO 2 is sulfur dioxide. In the preferred IUPAC ...
This will reduce sulfur dioxide emissions significantly. Further improvement can be expected when the copper smelter acid plant ... Thereafter, the main sources of sulfur dioxide from the smelter should be under control. Nevertheless, none of these expected ... Despite advancements in other areas, sulfur dioxide emissions reached record levels in August 2008. However, according to the ... 57 million which will reduce gas volume and provide a much richer sulfur dioxide off-gas that is far more suitable for sulfuric ...
... and molecular sulfur dioxide. The "unbound" sulfur dioxide provides the antimicrobial environment in the juice, while the ... The quantity of sulfur dioxide needed to inhibit microbial activity is directly related to pH of the juice; lower pH means less ... Once sulfur dioxide dissolves in the juice, it converts into a pH dependent mixture of bisulfite, sulfite ions, ... An important component in cider-making is the addition of sulphur dioxide to inhibit the growth of many spoilage bacteria or ...
Sulfur dioxide (SO2) emissions measured approximately 250,000 tonnes. Tremors were detected by the seismic monitoring in the ... The flows have additionally interrupted observations taken by carbon dioxide (CO2) measurement equipment that produces the ...
"Sulfur, Sulfur Dioxide, Graphitized Carbon Observed on Ceres". spaceref.com. 3 September 2016. Retrieved 8 September 2016. ... Studies using the Hubble Space Telescope show graphite, sulfur, and sulfur dioxide on Ceres's surface. The graphite is ... and sulfur, despite being suggested by Hubble UV observations, was not detected by Dawn. When in opposition near its perihelion ...
"Sulfur Dioxide from Taal Volcano Reaches NCR, Nearby Provinces". GMA News Online. June 30, 2021. Archived from the original on ... "Taal Volcano sulfur dioxide spikes on August 3". RAPPLER. August 3, 2022. Retrieved August 4, 2022. "Taal Volcano Alert Signals ... For comparison, daily and usual sulfur dioxide emission was measured up to 4,952 tons since July 15. Volcanic smog, or vog, and ... On March 9, 2021, PHIVOLCS raised the alert level from 1 to 2. In June 2021, the volcano's emission of sulfur dioxide gas ...
However, the sulfur is precipitated out of the atmosphere as acid rain in a matter of weeks, whereas carbon dioxide remains in ... After release, the sulfur dioxide is oxidized to H2SO4 which scatters solar radiation, hence its increase in the atmosphere ... The primary focus is on sulfur dioxide (SO2) and nitrogen oxides (NOx), the most important gases which caused acid rain; and ... Burning coal is a major emitter of sulfur dioxide, which creates PM2.5 particulates, the most dangerous form of air pollution. ...
Sulfur dioxide - preservative, antioxidant Sulfuric acid - acidity regulator Sumac - Sunflower oil - a common cooking oil, also ... Sesame seed - Shellac - glazing agent Silicon dioxide - anti-caking agent Silver - color (silver) Luohanguo Sodium acetate - ... Carbon dioxide - acidity regulator, propellant Cardamom - carmines - color (red) Carmoisine - color (red) (FDA: Ext D&C Red #10 ... Chlorine dioxide - flour treatment agent Chlorine - flour treatment agent Chlorophylls and Chlorophyllins - color (green) ...
When a sulfide burns it produces sulfur dioxide (SO2) gas. Hydrogen sulfide, some of its salts, and almost all organic sulfides ... Most often in sulfur chemistry and in biochemistry, the disulfide term is commonly ascribed to the sulfur analogue of the ... Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing ... Metal sulfides react with halogens, forming sulfur and metal salts. 8 MgS + 8 I2 → S8 + 8 MgI2 Aqueous solutions of transition ...
... such as black carbon and sulphur dioxide, respectively, as well as long-lived greenhouse gases, such as nitrous oxide or some ... The emission pathways that reach 1.5 °C contained in the report assume the use of carbon dioxide removal (CDR) to offset for ... Pathways that overshoot the goal rely on CDR to remove carbon dioxide at a rate that exceeds remaining emissions in order to ... "Global net human-caused emissions of carbon dioxide (CO2) would need to fall by about 45 percent from 2010 levels by 2030, ...
Early Mafia activity is strongly linked[qualify evidence] to Sicilian municipalities abundant in sulphur, Sicily's most ... countries with significant endowments in fossil fuel resources emit more carbon dioxide to generate the same amount of economic ...
Replacement of high sulphur bunker fuel with sulphur-free LNG is required on a major scale in the marine transport sector, as ... The natural gas fed into the LNG plant will be treated to remove water, hydrogen sulfide, carbon dioxide, benzene and other ... "IMO 2020 - cutting sulphur oxide emissions". www.imo.org. Retrieved 2021-07-05. "BHP weighing LNG power for iron ore ships". ... The "acidic" elements such as hydrogen sulphide (H2S) and carbon dioxide (CO2), together with oil, mud, water, and mercury, are ...
Republic will also install more temperature monitors plus two sulfur dioxide monitors to track unhealthy emissions. They will ... They will also reduce the usage of CO2e (carbon dioxide equivalent) by about 110,000 metric tons by their fleet over the coming ... The company has developed programs that will enable it to reduce emissions by 2.5 million tons of carbon dioxide equivalent ...
... two gaseous compounds of sulfur comproportionate in the presence of a catalyst to give elemental sulfur: 2 H2S + SO2 → 3 S + 2 ... 2 H2O The laboratory preparation of manganese dioxide involves comproportionation of Mn(II) and Mn(VII) reagents: 2 KMnO 4 + 3 ...
Here, carbon dioxide can be fixed by the Calvin - Benson cycle, a reversed citric acid cycle, or the carboxylation of acetyl- ... The energy in sunlight is captured by plants, cyanobacteria, purple bacteria, green sulfur bacteria and some protists. This ... These differ by the route that carbon dioxide takes to the Calvin cycle, with C3 plants fixing CO2 directly, while C4 and CAM ... Finally, the acetyl group on acetyl-CoA is oxidized to water and carbon dioxide in the citric acid cycle and electron transport ...
... such as the sulfur bacterium Thiobacillus, which lives in hot sulfur springs. The top level has top (or apex) predators which ... and carbon dioxide, water, and heat). Excretion of nutrients is, therefore, basic to metabolism.": 1230-1231 The units in ... including both minerals and gases such as carbon dioxide. These chemical reactions require energy, which mainly comes from the ...
The capsule shell is made of gelatin and titanium dioxide. Its melting point or its temperature of decomposition is 150 - 153 ° ... C at which it starts to emit toxic vapors such as nitrogen oxides and sulfur oxides. The drug fits inside the protease, ...
Typically, these reactions are oxidation, e.g. of sulfide to sulfur dioxide . Often, however, energy must be added to the ...
Addition and loss of water, carbon dioxide, and oxygen are among the compositional changes that must be considered. For example ... Raab, M.; Spiro, B. (April 1991). "Sulfur isotopic variations during seawater evaporation with fractional crystallization". ...
... trade has been a principal part of the US Environmental Protection Agency's efforts to reduce US emissions of sulfur dioxide ... "not only carbon dioxide, but also soot, methane, carbon monoxide and ozone. Many of these pollutants are associated with cancer ...
Ambient carbon dioxide, due to its acidity, has a slight solubilizing effect on calcite. The overall reaction is CaCO3(s) + H2O ... Several well formed milky white casts, made up of many small sharp calcite crystals, from the sulfur mines at Agrigento, Sicily ... The carbon dioxide released by this reaction produces a characteristic effervescence when dilute hydrochloric acid is dropped ... CO2(aq) → Ca2+(aq) + 2HCO−3(aq) If the amount of dissolved carbon dioxide drops, the reaction reverses to precipitate calcite. ...
If their electron and hydrogen donors are inorganic compounds (e.g. Na 2S 2O 3, as in some purple sulfur bacteria, or H 2S, as ... Such organisms derive their energy for food synthesis from light and are capable of using carbon dioxide as their principal ... Many, but not all, phototrophs often photosynthesize: they anabolically convert carbon dioxide into organic material to be ... in some green sulfur bacteria) they can be also called lithotrophs, and so, some photoautotrophs are also called ...
... producing sulfur dioxide, nitrogen oxide and particulate, in addition to carbon monoxide, carbon dioxide, and hydrocarbons ... Sulfur in the air creates acid rain which damages crops and buildings. When inhaled, sulfur is known to cause respiratory ... Ultra-low sulfur diesel (ULSD) is a standard for defining diesel fuel with substantially lowered sulfur contents. As of 2006, ... In contrast to sulfur emissions (which depend on the fuel used), nitrous oxide emissions are primarily a function of combustion ...
The endoxide reacts with 3-sulfolene in a Diels-Alder reaction upon elimination of sulfur dioxide. The resulting tricyclic ... "New insights into carbon dioxide interactions with benzimidazole-linked polymers", Chem. Commun., vol. 50, no. 27, pp. 3571- ... The crosslinking of benzimidazole-modified polymers provides materials with a high absorption capacity for carbon dioxide, ...
It hydrolyzes to a gel of hydrated titanium dioxide. The structure consists of dense polymeric network with tetrahedral sulfur ... It is a white solid that forms by treatment of titanium dioxide with fuming sulfuric acid. ...
... whether carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxide (NOx), and particulate matter. Longview is officially a " ...
... and sulfur dioxide. The creation of polyester creates pollution,[citation needed] in addition to waste from the finished ... When coal is burned it creates heavy amounts of air pollution containing carbon dioxide.[clarification needed] When petroleum ... Destroying unsold clothes is fashion's dirty secret, and we're complicit "Carbon Dioxide". Free Dictionary. Macron hires Kering ...
Because of concern about possible sulfur dioxide leaks from the malfunctioning battery system, a test of the modules' ... Station maintenance during the last week of July included replacement of a vacuum valve assembly on the carbon dioxide removal ...
... roasting-process of using an oxygen rich environment to isolate sulphur oxide from metal oxide which can then be smelted, ... smelting-using a reduced oxygen heated environment to separate metal oxides into metal and carbon dioxide, ...
... particularly sulfur, which forms sulfur dioxide upon combustion. However, its undesirable properties make it very cheap. In ... emitted ten times more sulfur dioxide than all of Europe's cars combined. Although the following trends generally hold true, ... The high sulfur content of No. 6 oil-up to 3% by weight in some extreme cases-had a corrosive effect on many heating systems ( ... Class A2 fuel is suitable for mobile, off-road applications that are required to use a sulfur-free fuel. Class D fuel is ...
Another key advantage of these LST is that it shows a resistance to sulfur poisoning, which is an issue with the currently used ... High-quality, epitaxial SrTiO3 layers can also be grown on silicon without forming silicon dioxide, thereby making SrTiO3 an ... doi:10.1016/S0167-2738(02)00140-6. Gong, Mingyang; Liu, Xingbo; Trembly, Jason; Johnson, Christopher (2007). "Sulfur-tolerant ...
Limestone slurry is sprayed with single fluid spray nozzles to control acid gas emissions especially sulfur dioxide (SO2) ...
The hot magma contained vast quantities of carbon dioxide and sulfur oxides, and released additional carbon dioxide and methane ... Over 5 trillion tons of sulfur dioxide was also released. The carbon dioxide produced extreme greenhouse conditions, with ... The pipes emitted up to 160 trillion tons of carbon dioxide and 46 trillion tons of methane. Coal ash from burning coal beds ...
Nitrogen dioxide is a problematic pollutant from internal combustion engines. Sulfur dioxide, the principal oxide of sulfur, is ... It is produced by the oxidation of sulfur to sulfur dioxide, which is separately oxidized to sulfur trioxide: S + O 2 ⟶ SO 2 {\ ... The commercially important dioxides of titanium exists in three distinct structures, for example. Many metal oxides exist in ... Examples of molecular oxides are carbon dioxide and carbon monoxide. All simple oxides of nitrogen are molecular, e.g., NO, N2O ...
In addition to the oxidation routes, diaryl sulfoxides can be prepared by two Friedel-Crafts arylations of sulfur dioxide using ... The sulfur center is pyramidal; the sum of the angles at sulfur is about 306°. Sulfoxides are generally represented with the ... The double-bond resonance form implies 10 electrons around sulfur (10-S-3 in N-X-L notation). The double-bond character of the ... Depending on the hard-soft properties of the metal, the sulfoxide binds through either the sulfur or the oxygen atom. The ...
Sulfur production report by the United States Geological Survey Discussion of recovered byproduct sulfur "2017 CAPP Crude Oil ... The Weyburn area in southeast Saskatchewan produces oil using carbon dioxide flooding in the Weyburn-Midale Carbon Dioxide ... In fact, the vast majority of the 64,000,000 metric tons of sulfur produced worldwide in 2005 was byproduct sulfur from ... The refining process converts most of that sulfur into gaseous hydrogen sulfide. Raw natural gas also may contain gaseous ...
... lime sulphur, and lead arsenate. In Australia, changes in farming practices such as the application of superphosphates on ... where the oxygen is picked up by the haemoglobin dissolved in the blood plasma and carbon dioxide is released. Water, as well ...
Exposure to sulfur dioxide may cause irritation to the eyes, nose, and throat. ... Sulfur dioxide (SO₂) is a colorless gas with a characteristic, irritating, pungent odor. ... Sulfur dioxide (SO₂) is a colorless gas with a characteristic, irritating, pungent odor. Exposure to sulfur dioxide may cause ... The following resources provide information about occupational exposure to sulfur dioxide. Useful search terms for sulfur ...
Exposure to sulfur dioxide occurs from breathing it in the air. It affects the lungs and at high levels may result in burning ... What is sulfur dioxide?. Sulfur dioxide is a colorless gas with a pungent odor. It is a liquid when under pressure, and it ... How can sulfur dioxide affect my health?. Exposure to very high levels of sulfur dioxide can be life threatening. Exposure to ... How likely is sulfur dioxide to cause cancer?. There are no studies that clearly show carcinogenic effects of sulfur dioxide in ...
... a group of scientists argue that the gas detected in the original article was sulfur dioxide instead of phosphine. Sulfur ... Sulfur dioxide on Venus may have tricked scientists into thinking the planet had life. Scientists thought they found a gas on ... "Sulfur dioxide is the third-most-common chemical compound in Venus atmosphere, and it is not considered a sign of life." ... They were detecting sulfur dioxide," Dr. Victoria Meadows, a University of Washington professor of astronomy who co-authored ...
... the EU has set two limit values for sulphur dioxide (SO2) for the protection of vegetation within the zones designated by ... Filed under: air quality zones 2009, air quality, sulphur dioxide, air pollution ... Sulphur dioxide - Winter limit value for the protection of ecosystems This website has limited functionality with javascript ... This page was archived on 04 Sep 2014 with reason: Other (New version data-and-maps/figures/sulphur-dioxide-winter-limit-value- ...
35 years ago studies started implicating sulphur dioxide preservatives in the exacerbation of asthma. This so-called ... Sulfite sensitivity from sulphur dioxide in dried fruits?. Written By Michael Greger M.D. FACLM • November 8, 2012 Last updated ... Please tell me your thoughts about what may be the cumulative effects on an aging body of sulphur dioxide preservatives used in ... 35 years ago studies started implicating sulphur dioxide preservatives in the exacerbation of asthma. This so-called "sulfite- ...
Adjusted emissions growth rate for sulfur dioxide @media only screen and (max-width:979px){ .submenumobile { margin-top: 0; ...
The test result showed that the sample contained sulphur dioxide. Although the sulphur dioxide level is below the maximum ... Sulphur dioxide is a preservative of low toxicity used in a variety of foods including fruit juice, dried vegetables, dried ... Undeclared allergen (sulphur dioxide) found in prepackaged fruit juice. Issue Date. 12.5.2020. ... Susceptible individuals who are allergic to sulphur dioxide may experience breathing difficulties, headaches and nausea after ...
... You May Also Like. * Crowcon Clip Single Gas Detector ( ... GS-AJ-A-012-G Gasman is for sulphur dioxide (SO2) - Also available in a safe area CO, NH3, and Cl version for carbon monoxide, ... GS-AJ-A-012-G Gasman is for sulphur dioxide (SO2) - Also available in a safe area CO, NH3, and Cl version for carbon monoxide, ...
Monitor sulfur dioxide in the air with our sulfur dioxide sensor head. Designed to measure 0-10ppm range using a GSE sensor. ... Products•Sensors•Sulfur Dioxide Sensor 0-10ppm. Sulfur Dioxide Sensor 0-10ppm ...
Wine, all on its own, is a fairly good antiseptic. The tartaric acid in wines made from grapes is a relatively strong organic acid that helps keep the pH of the wines low, which.... ...
Variability of Anthropogenic Gases: Nitrogen Oxides, Sulfur Dioxide, Ozone and Ammonia in Kathmandu Valley, Nepal Details 2016 ... High sulfur dioxide concentrations are found near coal-dependent brick factories.. *Increased river pollution from municipal ... Sulfur Dioxide, Ozone and Ammonia in Kathmandu Valley, Nepal. Aerosol Air Qual. Res. 16: 3088-3101. https://doi.org/10.4209/ ...
Sulfur dioxide is one of the most dangerous chemical compounds among those air pollutants. A study on removing sulfur dioxide ... It was decided to use three different concentrations of sulfur dioxide. For each of the concentrations of sulfur dioxide, five ... As sulfur dioxide gas is passed through the wood bed, it would be either condensed in the cell space of the wood by ... of sulfur dioxide in comparison to 2Q90.5 µg. of SO2 adsorbed in the same weight of woodchips but saturated with moisture. At ...
Threats of Sulfur Dioxide. Elevated levels of sulfur dioxide gas in the air also threatened residents in Leilani Estates and ... Exposure to high levels of sulfur dioxide could be life-threatening and can cause breathing difficulties. Breathing large ... amounts of sulfur dioxide could result in burning of the nose and throat and breathing difficulties. ...
... and phenolic compounds Free sulfur dioxide Bound sulfur dioxide Total sulfur dioxide 9 As sulfites are added to wine the % that ... Is sulfur dioxide added to wine? Is sulfur dioxide added to wine?. SO2 is added periodically throughout the winemaking process ... What is total sulfur dioxide in wine?. Simply put, Total Sulfur Dioxide (TSO2) is the portion of SO2 that is free in the wine ... How do you remove sulphur dioxide from wine?. The removal of sulfur dioxide from wine using hydrogen peroxide (H2O2) is an ...
Sulphur Dioxide winter mean critical level sites only 2020 - Fixed measurement ...
To download the chlorine and sulfur dioxide recovery vessels literaure, add item to your cart and check-out. You will receive a ...
Air quality guidelines global update 2005 : particulate matter, ozone, nitrogen dioxide and sulfur dioxide. by World Health ...
Volcanic ash and sulphur dioxide emitted by eruptions like the one currently going on with Cumbre Vieja on La Palma, are a ... Together with the outflowing lava, the volcano emits ash and several gases, amongst these sulphur dioxide (SO2). Volcanic ash ... A Sulfur Dioxide Covariance-Based Retrieval Algorithm (COBRA): application to TROPOMI reveals new emission sources, Atmos. Chem ... Sulfur dioxide retrievals from TROPOMI onboard Sentinel-5 Precursor: algorithm theoretical basis, Atmos. Meas. Tech., 10, 119- ...
N-DIETHYLANILINE SULFUR DIOXIDE COMPLEX AldrichCPR; CAS Number: 94096-24-9; Linear Formula: C10H16N2O2S; find -S341010 MSDS, ...
Sulfur dioxide is oxidized to sulfur trioxide in a small pilot-plant reactor. SO2 and 100% excess air are fed to the reactor at ...
Sulphur Dioxide SO2 gas sensor, 0-20ppm SO2, Part no: 2112B0421400 ... Home / Gas Sensors / Sulphur Dioxide SO2 / Gas Sensors / 4-SO2-20 Sulphur Dioxide SO2 Gas Sensor, 0-20ppm SO2. ... 4-SO2-20 Sulphur Dioxide SO2 Gas Sensor, 0-20ppm SO2. Product Code: 2112B0421400 ... 4-SO2-20 Sulphur Dioxide SO2 gas sensor. Measuring Range: 0-20ppm SO2 ...
... and said thats not the dot structure for sulfur dioxide. The dot structure for sulfur dioxide has sulfur with a double bond to ... Both of them will tell you the shape of sulfur dioxide, both of them give you a bent geometry around your sulfur. And so, we ... So which version of sulfur dioxide is the correct one? So in my opinion, theyre both fine, because for the first version, when ... Voiceover] In the previous video, we looked at the dot structure for sulfur dioxide, and I drew out two resonance structures. ...
Variation to Ambient Air Quality NEPM - ozone, nitrogen dioxide and sulfur dioxide ... Variation to Ambient Air Quality NEPM - ozone, nitrogen dioxide and sulfur dioxide ...
COMMENT PERIOD BEGINS , Proposed San Manuel Sulfur Dioxide Maintenance Plan Renewal. *Read more about COMMENT PERIOD BEGINS , ...
Determination of resistance to humid atmospheres containing sulfur dioxide ... Paints and varnishes - Determination of resistance to humid atmospheres containing sulfur dioxide. ... principle of the procedure specified is to expose a coated test panel to specified humid atmospheres containing sulfur dioxide ...
Purity SO2 Liquid Sulfur Dioxide Gas CAS 7446-09-5 For Preservative Reducing Agent products. ... Purity SO2 Liquid Sulfur Dioxide Gas CAS 7446-09-5 For Preservative Reducing Agent from China, Chinas leading Industrial Gases ... Most sulfur dioxide is produced by the combustion of elemental sulfur. Some sulfur dioxide is also produced by roasting pyrite ... The role of sulfur dioxide in mammalian biology is not yet well understood. Sulfur dioxide blocks nerve signals from the ...
Sulfur dioxide. Ambient concentrations of SO2 are reported to be in the range of 0.8-553 μg/m3 for 1-hour averages. As SO2 may ... sulfur dioxide (SO2), lead (Pb) and suspended particulate matter (SPM). For SPM, 2 classifications are generally employed, i.e ... Nitrogen dioxide. Local data in Table 5 indicate a concentration range for NO2 of 45.6-056 μg/m3 on 1-hour averages. Most ... Carbon dioxide. The CO concentration ranges given in Tables 4 and 5 correspond to 24-hour and 1-hour averaging times ...
The Sarnia site has recorded a 69 percent reduction in sulphur-dioxide emissions since 2006. The elimination of coke burning ...
This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information ». ...
  • Air quality guidelines global update 2005 : particulate matter, ozone, nitrogen dioxide and sulfur dioxide. (who.int)
  • The 6 pollutants that account for the large majority of air pollution worldwide and for which standards are usually specified include carbon monoxide (CO), ozone (O3), oxides of nitrogen (NOx), sulfur dioxide (SO2), lead (Pb) and suspended particulate matter (SPM). (who.int)
  • NOx are generally reported as nitrogen dioxide (NO2). (who.int)
  • Pollutants of major public health concern include particulate matter, carbon monoxide, ozone, nitrogen dioxide and sulfur dioxide. (who.int)
  • The data of ambient levels of particulate matter, sulfur dioxideand ozone were obtained from the Company of Technology of Environmental Sanitation (CETESB) and temperature and humidity from the Foundation for Science, Technology and Space Applications (FUNCATE). (bvsalud.org)
  • #GS-AJ-A-012-G Gasman is for sulphur dioxide (SO 2 ) - Also available in a safe area CO , NH 3 , and Cl version for carbon monoxide, ammonia, and chlorine measurements. (onlinestores.com)
  • In the air, it can be converted to sulfuric acid, sulfur trioxide, and sulfates. (cdc.gov)
  • Sulfur dioxide is oxidized to sulfur trioxide in a small pilot-plant reactor. (perfecttutorshub.com)
  • Sulfur dioxide is an intermediate in the production of sulfuric acid, being converted to sulfur trioxide, and then to oleum, which is made into sulfuric acid. (ultrapure-gases.com)
  • Asthmatics have also been shown to be sensitive to the respiratory effects of low concentrations of sulfur dioxide. (cdc.gov)
  • Animals exposed to high concentrations of sulfur dioxide showed decreased respiration, inflammation of the airways, and destruction of areas of the lung. (cdc.gov)
  • Children with asthma may be especially sensitive even to low concentrations of sulfur dioxide, but it is not known whether asthmatic children are more sensitive than asthmatic adults. (cdc.gov)
  • Animals exposed to high concentrations of sulfur dioxide occurs should limit their outdoor activities sulfur dioxide showed decreased respiration, inflammation of during times of high air pollution. (cdc.gov)
  • High sulfur dioxide concentrations are found near coal-dependent brick factories. (aaqr.org)
  • It was decided to use three different concentrations of sulfur dioxide. (pdx.edu)
  • For each of the concentrations of sulfur dioxide, five levels of moisture (0%', 11%, 20%, 50% and saturated) were assigned to the selected woodchips. (pdx.edu)
  • Number 10 boiler room sulfur - dioxide concentrations exceeded the NIOSH standard of 0.5 parts per million. (cdc.gov)
  • Together with the outflowing lava, the volcano emits ash and several gases, amongst these sulphur dioxide (SO 2 ). (bira.be)
  • Sulfur dioxide is the most harmful of these gases. (medlineplus.gov)
  • Sulfur dioxide (SO₂) is a colorless gas with a characteristic, irritating, pungent odor. (cdc.gov)
  • Environmental samples were analyzed for ammonia (7664417), chlorine (7782505), polynuclear aromatics, sulfur - dioxide (7446095), total particulates, and xylene (1330207) at Scott Paper Company (SIC- 2611), Everett, Washington in February 1983. (cdc.gov)
  • The type of respirators used were not sufficient to protect against sulfur-dioxide (7446095) or mercury. (cdc.gov)
  • Asthmatics may have adverse reactions to sulfur dioxide and should approach foods that contain sulfur dioxide with caution. (brainwritings.com)
  • NIOSHTIC-2 search results on sulfur dioxide -NIOSHTIC-2 is a searchable database of worker safety and health publications, documents, grant reports, and journal articles supported in whole or in part by NIOSH. (cdc.gov)
  • Immediately Dangerous to Life or Health (IDLH) Value Profile: sulfur dioxide -NIOSH reviews relevant scientific data and researches methods for developing IDLH values. (cdc.gov)
  • NIOSH Criteria Documents: Criteria for a Recommended Standard: Occupational Exposure to Sulfur Dioxide -DHHS (NIOSH) Publication No. 74-111 (1974). (cdc.gov)
  • Exposure to sulfur dioxide may cause irritation to the eyes, nose, and throat. (cdc.gov)
  • Symptoms include: nasal mucus, choking, cough, and reflex bronchi constriction, and when liquid: frostbite Workers may be harmed from exposure to sulfur dioxide. (cdc.gov)
  • The following resources provide information about occupational exposure to sulfur dioxide. (cdc.gov)
  • Presents a standard to prevent the adverse effects of exposure to Sulfur dioxide over a working lifetime. (cdc.gov)
  • Exposure to sulfur dioxide occurs from breathing it in the air. (cdc.gov)
  • Exposure to very high levels of sulfur dioxide can be life threatening. (cdc.gov)
  • Exposure to 100 parts of sulfur dioxide per million parts of air (100 ppm) is considered immediately dangerous to life and health. (cdc.gov)
  • Long-term exposure to persistent levels of sulfur dioxide can affect your health. (cdc.gov)
  • How can families reduce the risk of exposure to of sulfur dioxide. (cdc.gov)
  • sulfurdioxide was associated with hospitalizations in the first, second and third days after exposure andozone on the third day after exposure to gas. (bvsalud.org)
  • Sulphur dioxide is a preservative of low toxicity used in a variety of foods including fruit juice, dried vegetables, dried fruits, pickled vegetables and salted fish products. (gov.hk)
  • Sulfur dioxide is sometimes used as a preservative for dried apricots, dried figs, and other dried fruits, it is also a good reductant. (ultrapure-gases.com)
  • Sulfur dioxide dissolves in water. (cdc.gov)
  • Since sulfur dioxide is a gas, it dissolves in the air stream and transfers to a trapping solution. (brainwritings.com)
  • Long-term studies surveying large numbers of children indicate that children who have breathed sulfur dioxide pollution may develop more breathing problems as they get older, may make more emergency room visits for treatment of wheezing fits, and may get more respiratory illnesses than other children. (cdc.gov)
  • In the air, it can be converted to sulfuric acid, sulfur triox explosion in a copper mine. (cdc.gov)
  • Volcanic smog also contains highly acidic aerosols (tiny particles and droplets), mainly sulfuric acid and other sulfur-related compounds. (medlineplus.gov)
  • In nature, sulfur dioxide can be released to the air from volcanic eruptions. (cdc.gov)
  • Useful search terms for sulfur dioxide include "sulfur oxide," "sulfurous acid", "anhydride," and "sulfurous oxide. (cdc.gov)
  • Once dissolved in water, sulfur dioxide can form sulfurous acid. (cdc.gov)
  • This compact electrochemical sensor i s a high quality, cost effective electrochemical cell for the detection of Sulphur Dioxide in air. (euro-gasman.com)
  • Breathing large amounts of sulfur dioxide could result in burning of the nose and throat and breathing difficulties. (newsblaze.com)
  • Sulfur dioxide is toxic in large amounts. (ultrapure-gases.com)
  • Burning of the nose and throat, breathing difficulties, and severe airway obstructions occurred in miners who breathed sulfur dioxide released as a result of an explosion in a copper mine. (cdc.gov)
  • Susceptible individuals who are allergic to sulphur dioxide may experience breathing difficulties, headaches and nausea after consumption. (gov.hk)
  • Animal studies also show respiratory effects from breathing sulfur dioxide. (cdc.gov)
  • Sulfur dioxide is one of the most dangerous chemical compounds among those air pollutants. (pdx.edu)
  • Lung function changes were seen in some workers exposed to low levels of sulfur dioxide for 20 years or more. (cdc.gov)
  • Elevated levels of sulfur dioxide gas in the air also threatened residents in Leilani Estates and evacuation shelters. (newsblaze.com)
  • Sulfite sensitivity from sulphur dioxide in dried fruits? (nutritionfacts.org)
  • Please tell me your thoughts about what may be the cumulative effects on an aging body of sulphur dioxide preservatives used in processing fruits for drying. (nutritionfacts.org)
  • In general, most dried fruits often contain more sulfur dioxide than the maximum allowable limit in wine. (brainwritings.com)
  • The results of the experiments show that dry wood (0% moisture content) had comparatively low characteristics in the adsorption of sulfur dioxide. (pdx.edu)
  • Being easily condensed and possessing a high heat of evaporation, sulfur dioxide is a candidate material for refrigerants. (ultrapure-gases.com)
  • But when SO 2 is (free) in wine, it can take 3 different forms: Here are the proper terms: molecular SO2 when in solution with water (H 2 O) From a chemical stand point, this is confusing because winemakers and wine writers use the terms SO 2, "sulfur dioxide" or just "sulfur", interchangeably, to talk about any of those three forms. (brainwritings.com)
  • Sulfur dioxide has recently been found to be produced endogenously in the cardiovascular system and have important positive biological effects. (bvsalud.org)
  • In the case of Venus, the scientists believe that the authors of the original phosphine paper underestimated the amount of sulfur dioxide in the Venusian atmosphere and mistakenly believed that their data came from the Venusian clouds when in fact it could have come from the mesosphere, which is roughly 50 miles above. (salon.com)
  • These data show that the moisture saturated wood adsorbed about 90 times the amount of sulfur dioxide that the dry wood adsorbed. (pdx.edu)
  • How do you reduce the amount of Sulphur in wine? (brainwritings.com)
  • This fact sheet answers the most frequently asked health questions about sulfur dioxide. (cdc.gov)
  • In the air quality directive (2008/EC/50), the EU has set two limit values for sulphur dioxide (SO2) for the protection of vegetation within the zones designated by member states: the SO2 annual mean value may not exceed 20 micrograms per cubic metre (µg/m3) and the SO2 mean value for the winter period (1 October to 31 March) may not exceed 20 micrograms per cubic metre (µg/m3). (europa.eu)
  • For references , please go to https://www.eea.europa.eu/data-and-maps/figures/sulphur-dioxide-winter-limit-value-for-the-protection-of-ecosystems-3 or scan the QR code. (europa.eu)
  • Simply put, Total Sulfur Dioxide (TSO2) is the portion of SO2 that is free in the wine plus the portion that is bound to other chemicals in the wine such as aldehydes, pigments, or sugars. (brainwritings.com)
  • Bisulfite HSO3 - Sulfite SO= Sulfites attached to sugars, acetaldehyde, and phenolic compounds Free sulfur dioxide Bound sulfur dioxide Total sulfur dioxide 9 As sulfites are added to wine the % that is bound goes down. (brainwritings.com)
  • If you work in an industry that uses sulfur dioxide, please read chemical labels and the accompanying Safety Data Sheets for hazard information. (cdc.gov)
  • Instead of phosphine in the clouds of Venus, the data are consistent with an alternative hypothesis: They were detecting sulfur dioxide," Dr. Victoria Meadows, a University of Washington professor of astronomy who co-authored the new paper, explained in a press release . (salon.com)
  • These data indicated that sulfur dioxide preconditioning reduced I/R-induced myocardial injury in vivo and in vitro , and that augmenting ERS by sulfur dioxide preconditioning prior to I/R contributed to protection against myocardial I/R injury . (bvsalud.org)
  • There are no studies that clearly show carcinogenic effects of sulfur dioxide in people or animals. (cdc.gov)
  • Children who live in or near heavily industrialized areas where sulfur dioxide occurs may experience difficulty breathing, changes in the ability to breathe deeply, and burning of the nose and throat It is not known whether children are more vulnerable to these effects than adults. (cdc.gov)
  • What is total sulfur dioxide in wine? (brainwritings.com)
  • All wines produced in the United States must contain less than 350 ppm total sulfur dioxide. (brainwritings.com)
  • Breathing zone air samples were collected and analyzed for sulfur - dioxide , total particulates, polynuclear aromatics, and xylene. (cdc.gov)
  • Sulfur dioxide is the third-most-common chemical compound in Venus' atmosphere, and it is not considered a sign of life. (salon.com)
  • The test result showed that the sample contained sulphur dioxide. (gov.hk)
  • The principle of the procedure specified is to expose a coated test panel to specified humid atmospheres containing sulfur dioxide. (iso.org)
  • 35 years ago studies started implicating sulphur dioxide preservatives in the exacerbation of asthma. (nutritionfacts.org)
  • Occupational Safety and Health Guideline for Sulfur Dioxide pdf icon -This guideline helps stakeholders conduct effective occupational safety and health programs. (cdc.gov)
  • How can sulfur dioxide affect my health? (cdc.gov)
  • Although the sulphur dioxide level is below the maximum permitted level under the Preservatives in Food Regulation (Cap 132BD), the functional class and name of such additive were not declared on the food label of the sample. (gov.hk)
  • In the United States in 1979, 23.6 million tonnes (26,014,547 US short tons) of sulfur dioxide were used in this way, compared with 150 thousand tonnes (165,347 US short tons) used for other purposes. (ultrapure-gases.com)
  • Sulfur dioxide in the body is changed into other sulfur- animal study suggests that sulfur dioxide may be a carcinogen containing chemicals in the body. (cdc.gov)
  • A study on removing sulfur dioxide from an air stream by adsorption using wood chips as the adsorbent is presented in this thesis. (pdx.edu)
  • In this study, we showed that preconditioning with sulfur dioxide 10 min before ischemia (with a low concentration of sulfur dioxide of 1-10 µmol/kg) could reduce myocardial infarct size and plasma activities of lactate dehydrogenase and creatine kinase in rats with I/R in vivo. (bvsalud.org)
  • Lung function changes were seen in Once dissolved in water, sulfur dioxide can form sulfu rous acid. (cdc.gov)
  • Sulfur dioxide preconditioning also reduced myocardium apoptosis induced by I/R. In addition, sulfur dioxide preconditioning increased cardiac function in vitro . (bvsalud.org)