Particulate matterUltrafine particlesPollutantsAerosol particlesMicroscopicContributor to atmosphericAerosolsDaily pollutantParticulatesPollutantCombustionWildfiresAirborneOutdoor concentrationsExposureLevoglucosanPollutionProcessesVOCsDiameterAmmoniumAtmosphereOzoneMeasurementsSignificantlyBiologicalCarbonSignificantImplicationsHighIndoorIncludePeakHuman activityScienceComponentsExchange
Particulate matter9
- There are three primary forms: atmospheric particulate matter, marine debris, and space debris. (wikipedia.org)
- Atmospheric particulate matter, also known as particulate matter, or PM, describes solids and/or liquid particles suspended in a gas, most commonly the Earth's atmosphere. (wikipedia.org)
- In addition, we developed a microanalytical method suitable for the quantitative determination of the sugar anhydride levoglucosan in low-volume samples of atmospheric fine particulate matter. (cdc.gov)
- The recovery standard sedoheptulosan (2,7 -anhydro-B-D-altro- heptulopyranose) in 20 uL solvent is added onto samples of the atmospheric fine particulate matter and aged for 1 hr prior to ultrasonic extraction with ethylacetate/triethylamine. (cdc.gov)
- In addition, fire effluents contain soot particles (particulate matter [PM]) that can penetrate deep into the lungs while carrying other, less mobile compounds. (springer.com)
- Organic aerosol (OA) contributes a significant fraction (10 %-90 %) of atmospheric particulate matter (PM), which can affect human health and air quality (Jimenez et al. (copernicus.org)
- Concentrations of airborne continuous fine particulate matter or (PM2.5), black carbon (BC), and ultrafine particles (UFP) were continuously measured over 5 days in winter and summer both indoors and outdoors at residences for forty-eight adults in 2005 and forty-seven asthmatic children in 2006. (edu.au)
- The results prove the influence of external aerosol transport on local high particulate matter (PM) pollution and fluorescent aerosol particle composition. (copernicus.org)
- Particulates or atmospheric particulate matter (see below for other names) are microscopic particles of solid or liquid matter suspended in the air . (knowpia.com)
Ultrafine particles1
- Major domestic pollutants contain 17% of carbon dioxide, 13% of carbon monoxide, 6% of nitrogen monoxide, polycyclic aromatic hydrocarbons, and fine and ultrafine particles. (wikipedia.org)
Pollutants8
- citation needed] The main component of woodsmoke, black carbon significantly appears in the indoor environment compared to other ambient pollutants. (wikipedia.org)
- citation needed] The regular dusk mask also can help little with particulate pollutants since they are designed to filter out larger particles. (wikipedia.org)
- Living under high concentrations of pollutants can lead to headaches, fatigue, lung disease, asthma, and throat and eye irritation. (wikipedia.org)
- Notably, some of the same kinds of particles can be suspended both in air and water, and pollutants specifically may be carried in the air and deposited in water, or fall to the ground as acid rain. (wikipedia.org)
- Outdoor concentrations of all particle-related pollutants showed overnight decreases followed by increases during the morning rush hours. (edu.au)
- Between 5:00 pm and 7:00 pm, indoor UFP and PM2.5 concentrations exceeded their mean daily values by 160% and 60%, respectively, suggesting that cooking is an extremely important source for these two pollutants. (edu.au)
- Air quality managers monitor six common air pollutants: particle pollution, ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide and lead, with the first two comprising the bulk of pollutants. (foxla.com)
- Significant increases in gaseous pollutants (CO, CH4, N2O, VOCs, etc.) and particles (including black carbon) were found within the wildfire plumes, leading to a reduced air quality. (bvsalud.org)
Aerosol particles2
- The WIBS data show that, during these transport events, several types of fluorescent aerosol particles exhibit abnormal increases in their concentration, number fractions to total particles, and number fractions to whole fluorescent aerosols. (copernicus.org)
- In a narrow sense, bioaerosols refer to primary biological aerosol particles (PBAPs), which means biological material directly emitted to the atmosphere rather than being formed through gas-to-particle conversion. (copernicus.org)
Microscopic1
- Particulates (also known as atmospheric aerosols) are microscopic particles of solids and/or liquids suspended in air. (ongaroandsons.com)
Contributor to atmospheric1
- Fossil fuel combustion is a massive contributor to atmospheric levels of nitrogen oxide, but natural sources such as forest fires can also contribute. (camfil.us)
Aerosols3
- Based on the HYbrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) backward trajectory model and the characteristics of external aerosols in WIBS, their possible sources, transport paths, and components are discussed. (copernicus.org)
- Aerosols are suspensions of solid particles or liquid droplets in the atmosphere. (copernicus.org)
- Biological aerosols or bioaerosols are atmospheric aerosols derived from biological sources in a broad sense. (copernicus.org)
Daily pollutant2
- We also examined the implications of using modeled versus measured daily pollutant concentrations to predict daily lung function among asthmatic children living in those homes. (edu.au)
- These agencies send their hourly or daily pollutant concentration measurements to the EPA's Air Quality System database . (foxla.com)
Particulates1
- Space debris describes particulates in the vacuum of outer space, specifically particles originating from human activity that remain in geocentric orbit around the Earth. (wikipedia.org)
Pollutant3
- Furthermore, effect estimates for forced expiratory volume in 1 s (FEV1) and peak expiratory flow (PEF) based on modeled pollutant concentrations were consistent with effects based on household-level measurements for NO2 and PM2.5. (edu.au)
- Air pollution can cause a number of different health problems depending upon factors like the kind of air pollutant a person is exposed to, the concentration of the pollutant, and the person's individual genetics. (camfil.us)
- Measurements of air pollutant concentrations are taken at more than 4,000 monitoring stations owned and operated mainly by state environmental agencies, according to the EPA. (foxla.com)
Combustion2
- Combustion from kerosene heaters contributes to the radon progeny particle size distribution in particles in the size range of 0.02-0.08 µm (Tu et al. (cdc.gov)
- It was our hypothesis that the dose-dependent increase in urinary methoxyphenols observed following ingestion or inhalation of woodsmoke combustion products can be related in a quantitative manner to environmental woodsmoke, and thereby provide a biomarker basis for assessment of woodsmoke exposure in occupationally and environmentally exposed populations. (cdc.gov)
Wildfires2
- In the US alone, more than 100,000 people annually are exposed to elevated woodsmoke levels from wildfires, prescribed burns and agricultur al field burning. (cdc.gov)
- These include smoke particles from wildfires, airborne dust during dust and sand storms, urban and industrial pollution and ash from erupting volcanoes , NOAA said. (foxla.com)
Airborne1
- In mobile homes in particular, use of kerosene heaters resulted in an increase in CO and airborne unburned kerosene fuel, an increase in mutagenicity of particle-phase organics, and little mutagenicity in the semivolatile organics (Mumford et al. (cdc.gov)
Outdoor concentrations2
Exposure10
- Exposure to woodsmoke intensifies the respiratory systems and increases the risk of hospital admissions. (wikipedia.org)
- 70,000 - 80,000 people involved in wildland fire fighting also receive substantial occupational exposure to woodsmoke. (cdc.gov)
- Investigating the relationship between woodsmoke exposure and adverse health effects is hindered by inadequate methods of exposure assessment which leads to exposure misclassification, and the setting of community-impact-driven guidelines for managed fires suffers from a lack of exposure-response data. (cdc.gov)
- The primary objective of this proposal was to develop biological markers of human exposure to woodsmoke. (cdc.gov)
- Preliminary work has shown that levels of a number of methoxylated phenolic compounds are increased in urine following woodsmoke exposure. (cdc.gov)
- The second aim of this project was to determine the range of woodsmoke exposures above which urinary methoxyphenol excretion in humans is reflective of woodsmoke exposure. (cdc.gov)
- Significant associations between woodsmoke exposure and urinary methoxyphenol excretion were only observed for populations with very high woodsmoke exposures (Managed exposure study, Guatemala study, wildland firefighters). (cdc.gov)
- Urinary methoxyphenol excretion was not associated with woodsmoke exposure for residents of Seattle, W A (typical PM exposures approximately 10-15 ug/m3 PM2.5), or for farm ers exposed to wheat stubble smoke (70-1800 ug/m3 PM2.5 for up to 3 hours). (cdc.gov)
- However, LUR models lack fine-scale temporal resolution for predicting acute exposure and regulatory monitoring provides daily concentrations, but fails to capture spatial variability within urban areas. (edu.au)
- Exposure to both nitrogen oxides and sulfur dioxide can easily cause choking, wheezing, headaches and nausea in high concentrations. (camfil.us)
Levoglucosan1
- The optimum OC ∕ levoglucosan ratio in Ulaanbaatar was obtained by regression analysis between OC non-BB (OC total -OC BB ) and levoglucosan concentrations that gives the lowest coefficient of determination ( R 2 ) and slope. (copernicus.org)
Pollution4
- Particulate pollution is pollution of an environment that consists of particles suspended in some medium. (wikipedia.org)
- In some towns and cities in New South Wales wood smoke may be responsible for 60% of fine particle air pollution in the winter. (wikipedia.org)
- For example, the AQI for ozone is valid for eight hours, while the AQI for particle pollution is valid for 24 hours. (foxla.com)
- For example, according to NOAA, satellites in NOAA's GOES-R Series monitor the particle pollution in the atmosphere . (foxla.com)
Processes2
- They play an important role in atmospheric physical and chemical processes including ice nucleation and cloud condensation. (copernicus.org)
- It contributes to the further understanding of long-range bioaerosol transport, the roles of bioaerosols in atmospheric processes, and in aerosol-cloud-precipitation interactions. (copernicus.org)
VOCs1
- According to some studies , the concentration of VOCs is usually two to five times higher inside homes than outside, and it can be up to 10 times higher, according to the EPA. (ongaroandsons.com)
Diameter1
- The particles that the study tracked include PM 10 (particles with a diameter less than 10-microns), PM 2.5 (those that have a diameter less than 2.5-micronsμ) and PM 1 (diameter less than 1-micron). (camfil.us)
Ammonium2
- Secondary particles, such as ammonium nitrate, are formed in the atmosphere through gas-to-particle conversion. (wikipedia.org)
- Changes in the ambient ions (such as ammonium, sulfate, nitrate, chloride, and nitrite in the particle- and gas- phase) and aerosol properties (e.g., aerosol water content, aerosol pH) were also quantified and discussed. (bvsalud.org)
Atmosphere3
- Some particles are released directly from a specific source, while others form in chemical reactions in the atmosphere. (wikipedia.org)
- Particles in the atmosphere can be divided into two types, depending on the way they are emitted. (wikipedia.org)
- Primary particles, such as mineral dust, are emitted into the atmosphere. (wikipedia.org)
Ozone1
- High concentrations of ozone can cause thick smog which decreases visibility and leads to irritation of the eyes, throat, and nose. (camfil.us)
Measurements1
- Mixed effect analysis suggested that temporally refined LUR models explained a greater proportion of the spatial and temporal variance in daily household-level outdoor NO2 measurements compared with daily concentrations based on regulatory monitoring. (edu.au)
Significantly3
- Since the 19th century, concentrations of atmospheric carbon dioxide, methane, nitrous oxide and sulfate aerosol dust have increased significantly. (ucanr.edu)
- Recent study shows that lung cancer is significantly higher in the areas where arsenic concentration is 1.77 ng/m 3 or more [ 8 ]. (biomedcentral.com)
- Such studies become important when experimental results conclude that lung cancer is significantly higher in the areas where arsenic concentration is 1.77 ng/m 3 or more. (biomedcentral.com)
Biological1
- Biological monitoring of woodsmoke. (cdc.gov)
Carbon2
Significant1
- D uring the past century, perhaps the most controversial subject in atmospheric science has been the question of whether humans are having a significant impact on climate. (ucanr.edu)
Implications1
- Considering that it is the first time to record wildfire plumes in this region, related atmospheric implications are presented and discussed. (bvsalud.org)
High1
- In addition, it also helps to understand the relationships between atmospheric phenomena at high altitudes like virga and the variation of surface bioaerosol. (copernicus.org)
Indoor1
- The highest indoor-outdoor ratios were observed for UFP suggesting that indoor sources were relatively more important for UFP than for other particle components. (edu.au)
Include1
- The TEM-EDX single-particle analysis further suggests that these long-wavelength absorbers might include iron oxides, as iron is found to be present only when large values of k eBC are derived. (copernicus.org)
Peak1
- concentrations of CO averaged 7.4 ppm with a peak of 11.5 ppm. (cdc.gov)
Human activity1
- Few scientists dispute that human activity is causing the atmospheric concentrations of greenhouse gases and particles to increase, and that this, in turn, is leading to global climate change. (ucanr.edu)
Science2
- B.C. Weare is Professor and Meteorologist, Atmospheric Science Program, Department of Land, Air and Water Resources, UC Davis. (ucanr.edu)
- These reports, compiled by a panel of hundreds of atmospheric scientists from around the world under the umbrella of the United Nations, describe the current consensus concerning the science of global climate change. (ucanr.edu)
Components1
- Atmospheric emissions of a fuel oil may be determined primarily by detection of its volatile hydrocarbon components. (cdc.gov)
Exchange1
- citation needed] If the room is sealed tight enough to prevent woodsmoke transmission, it will also prevent oxygen exchange from indoors to outdoor. (wikipedia.org)