This fact sheet answers the most frequently asked health questions about polycyclic aromatic hydrocarbons (PAHs). (cdc.gov)
Polycyclic aromatic hydrocarbons (PAHs) are a group of over 100 different chemicals that are formed during the incomplete burning of coal, oil and gas, garbage, or other organic substances like tobacco or charbroiled meat. (cdc.gov)
What happens to polycyclic aromatic hydrocarbons (PAHs) when they enter the environment? (cdc.gov)
How might I be exposed to polycyclic aromatic hydrocarbons (PAHs)? (cdc.gov)
How likely are polycyclic aromatic hydrocarbons (PAHs) to cause cancer? (cdc.gov)
Is there a medical test to show whether I've been exposed to polycyclic aromatic hydrocarbons (PAHs)? (cdc.gov)
Polycyclic aromatic hydrocarbons (PAHs) are a group water after a period of weeks to months. (cdc.gov)
Polycyclic aromatic hydrocarbons (PAHs) could play an important role in astrochemistry as catalysts for formation of molecular hydrogen, the most abundant molecule in the universe and the key species for formation of more complex chemical compounds under interstellar conditions. (europa.eu)
A facile one-step approach to fabricate substrates for surface-enhanced Raman scattering ( SERS ) detection of polycyclic aromatic hydrocarbons (PAHs) was explored by reduction of silver nitrate with humic acids (HAs). (rsc.org)
More importantly, it compares favorably to Ag NPs prepared by the usual sodium citrate method, HAs-Ag NPs show excellent SERS activity for PAHs and display a remarkable capacity to absorb aromatic molecules through presumed π-π stacking interactions. (rsc.org)
The ionization of polycyclic aromatic hydrocarbons (PAHs), by ultraviolet (UV) photons from massive stars is expected to account for a large fraction of the heating of neutral gas in galaxies. (astrobiology.com)
In this dissertation, I present electronic spectra of a few polycyclic aromatic hydrocarbons (PAHs): tetracene, pentacene, pyrene, benzo[g,h,i]perylene and benzo[a]pyrene using resonantly enhanced multiphoton ionization (REMPI) and zero kinetic energy (ZEKE) photoelectron spectroscopy. (oregonstate.edu)
Exposure to polycyclic aromatic hydrocarbons (PAHs) in foundry workers has been evaluated by determination of benzo(a)pyrene-serum albumin adducts and urinary 1-hydroxypyrene. (bmj.com)
Dose-response relations between total PAH, pyrene, carcinogenic PAHs, and 1-hydroxypyrene for smokers, and polycyclic aromatic hydrocarbons adsorbed to dust for non-smokers are suggested. (bmj.com)
Nine structurally different polycyclic aromatic hydrocarbons (PAHs) were tested for their ability to either agonize or antagonize the human androgen receptor (hAR) in a sensitive reporter gene assay based on CHO cells transiently cotransfected with a hAR vector and an MMTV-LUC vector. (dtu.dk)
Polycyclic aromatic hydrocarbons (PAHs) have endocrine disrupting properties and they cross the placental barrier, but studies on gestational exposure and child anthropometry are inconclusive. (lu.se)
The morphologies of heterogeneous clusters of polycyclic aromatic hydrocarbons (PAHs) are investigated using molecular modelling. (ntu.edu.sg)
This study investigated the sorptive behavior of polycyclic aromatic hydrocarbons (PAHs) and nitrated PAHs (NPAHs) to uncoated 96-well polystyrene plates typically used for zebrafish (Danio rerio) testing. (oregonstate.edu)
Background: Polycyclic aromatic hydrocarbons (PAHs) have been proposed as environmental risk factors for attention deficit hyperactivity disorder (ADHD). (upf.edu)
The Deepwater Horizon (DWH) blowout resulted in oil transport, including polycyclic aromatic hydrocarbons (PAHs) to the Gulf of Mexico shoreline. (marquette.edu)
however the relative abundance of functional genes involved in oil degradation pathways, including polycyclic aromatic hydrocarbons (PAHs), were greater in the oiled beach. (marquette.edu)
DHT, isolated from the oil-contaminated soil, exhibited broad substrate profile for polycyclic aromatic hydrocarbons (PAHs) degradation but the rate of degradation was slow. (envirobiotechjournals.com)
Determination of Polycyclic Aromatic Hydrocarbons (PAHs) on Fresh Water Samples from Egbema in Ogba/Egbema/Ndoni L.G.A. in Rivers State. (ijaar.org)
Polycyclic aromatic hydrocarbons and petroleumhydrocarbons C10 to C50 concentrations recorded at the Varennes experimental site (Maxxam Analysis) and comparisons with Canadian environmental quality guidelines for PAHs in sediment (http://st-ts.ccme.ca). (studylib.net)
2013). B: Bar chart corresponding to the values of some polycyclic aromatic hydrocarbons (PAHs) measured in the polluted sediments, where A, F, Phe and Py correspond to anthracene, fluorine, phenanthrene and pyrene, respectively. (studylib.net)
A laboratory scale fluidized bed reactor and a bench scale 0.1 MW(th) fluidized bed combustor were used to study the effect of operating conditions on the formation of Polycyclic Aromatic Hydrocarbons (PAHs) in fly ash from fluidized bed combustion systems. (uky.edu)
Three-and four- ring aromatic compounds were the major PAHs from pyrolysis conditions, while naphthalene (two-rings) is the dominant compound in bed ash collected from oxygen-rich combustion conditions. (uky.edu)
Nine dissimilar biochars, produced from varying feedstock at different pyrolysis temperatures, are appraised with respect to concentrations of potentially toxic elements, specifically, metals, metalloids and polycyclic aromatic hydrocarbons (PAHs). (uea.ac.uk)
Polycyclic aromatic hydrocarbons (PAHs) are of great importance from the aspect of fundamental sciences as well as materials science, especially in organic electronics. (elsevierpure.com)
Several forms have been proposed for interstellar carbon, including graphite 3 , amorphous carbon 4 , polycyclic aromatic hydrocarbons (PAHs) 5 , diamond 6 , fullerenes 7 and bacteria 8 . (nature.com)
We have analyzed ice samples and meteorites from the LaPaz region of Antarctica to investigate the composition of polycyclic aromatic hydrocarbons (PAHs) and amino acids with the goal to understand whether or not there is a compositional relationship between the two reservoirs. (arizona.edu)
Food can be contaminated by PAHs because of the contamination of air, water or soil, and during industrial process, as heating, drying and Polycyclic aromatic hydrocarbons (PAHs) are a group of over 200 smoking process. (bvsalud.org)
PAHs were found in different foodstuffs, including different organic compounds with two or more fused aromatic rings vegetables, fruit, cereals, oils and fats, smoked fish and meat, coffee and ( Domingo & Nadal, 2015 ). (bvsalud.org)
Ecological and health risk assessments of polycyclic aromatic hydrocarbons (PAHs) in soils around a petroleum refining plant in China: A quantitative method based on the improved hybrid model. (bvsalud.org)
Polycyclic aromatic hydrocarbons (PAHs) are extensively released into the environment by petroleum refining activities, predominantly affecting soil as a major reservoir . (bvsalud.org)
A sensitive and reliable method for determination of polycyclic aromatic hydrocarbons (PAHs) in grilled meat samples was developed and validated. (who.int)
In this work, a two-phase hollow fiber liquid-phase microextraction (HF-LPME) method combined with gas chromatography-mass spectrometry (GC-MS) is developed to provide a rapid, selective and sensitive analytical method to determine polycyclic aromatic hydrocarbons (PAHs) in fresh milk. (who.int)
A review of airborne polycyclic aromatic hydrocarbons (PAHs) and their human health effects. (bvsalud.org)
Benzo1
Exposure of iron foundry workers to polycyclic aromatic hydrocarbons: benzo(a)pyrene-albumin adducts and 1-hydroxypyrene as biomarkers for exposure. (bmj.com)
Exposure to polycyclic aromatic hyd1
Exposure to polycyclic aromatic hydrocarbons usually occurs by breathing air contaminated by wild fires or coal tar, or by eating foods that have been grilled. (cdc.gov)
Abstract1
Classifying Polycyclic Aromatic Hydrocarbons by Carcinogenic Potency Using In Vitro Biosignatures [ Abstract Classifying Polycyclic Aromatic Hydrocarbons by Carcinogenic Potency Using In Vitro Biosignatures ] [ Synopsis Classifying Polycyclic Aromatic Hydrocarbons by Carcinogenic Potency Using In Vitro Biosignatures ] Chang Y, Huynh CTT, Bastin KM, Rivera BN, Siddens LK, Tilton SC. (nih.gov)
Concentrations1
Atmospheric concentrations of flame retardants, polycyclic aromatic hydrocarbons, and pesticides were measured using passive air samplers equipped with polyurethane foam disks to find spatial information in and around Chicago, Illinois. (uiowa.edu)
Compounds5
A polycyclic aromatic hydrocarbon (PAH) is a class of organic compounds that is composed of multiple aromatic rings. (wikipedia.org)
The simplest representative is naphthalene, having two aromatic rings, and the three-ring compounds anthracene and phenanthrene. (wikipedia.org)
Polycyclic aromatic hydrocarbons (PAH) consist of compounds composed of carbon and hydrogen in the form of aromatic rings. (nematictech.com)
Since polyaromatic hydrocarbons are grouped under a large number of different compounds, some tests only provide exposure insight into one PAH. (nematictech.com)
May - the International Society for Polycyclic Aromatic Compounds! (studylib.net)
Toxicity5
This CSEM focuses on the toxicity of polycyclic aromatic hydrocarbons. (cdc.gov)
Two versions of the Toxicity of Polycyclic Aromatic Hydrocarbons CSEM are available. (cdc.gov)
Take the Initial Check to assess your current knowledge about the toxicity of polycyclic aromatic hydrocarbons. (cdc.gov)
Quantitation and prediction of sorptive losses during toxicity testing of polycyclic aromatic hydrocarbon (PAH) and nitrated PAH (NPAH) using polystyrene 96-well plates. (oregonstate.edu)
The number of aromatic rings possessed by a polyaromatic hydrocarbon is correlated to its toxicity. (nematictech.com)
Anthracene1
Benzene-substructure resonance analysis for Clar's rule Phenanthrene Anthracene Chrysene For example, phenanthrene has two Clar structures: one with just one aromatic sextet (the middle ring), and the other with two (the first and third rings). (wikipedia.org)
Polyaromatic hydrocarbon2
The terms polyaromatic hydrocarbon, or polynuclear aromatic hydrocarbon (abbreviated as PNA) are also used for this concept. (wikipedia.org)
A polyaromatic hydrocarbon may have rings of various sizes, including some that are not aromatic. (wikipedia.org)
Bacterium1
Genome sequence of Pseudomonas citronellolis SJTE-3, an estrogen- and polycyclic aromatic hydrocarbon-degrading bacterium. (pacb.com)
PAH's2
For instance, PAH's with 4 to 5 rings are more toxic than those with only 2 to 3 aromatic rings. (nematictech.com)
The concentration of Polycyclic Aromatic Hydrocarbons (PAH's) and physicochemical parameters were determined. (ijaar.org)
Degradation3
The Polycyclic Aromatic Hydrocarbon Degradation Potential of Gulf of M" by Anthony D. Kappell, Yin Wei et al. (marquette.edu)
To investigate the Gulf Coast beach microbial community response to hydrocarbon exposure, we examined the functional gene diversity, bacterial community composition, and PAH degradation capacity of a heavily oiled and non-oiled beach following the oil exposure. (marquette.edu)
Massively-parallel sequencing of 16S rRNA genes from mesocosm DNA showed that known PAH degraders and genera frequently associated with oil hydrocarbon degradation represented a major portion of the bacterial community. (marquette.edu)
Spectra1
Employing incoherent broadband cavity enhanced absorption spectroscopy (IBBCEAS), the spectra were found to be unstructured with a general lack of isolated features suggesting that the extinction was not solely based on absorption but was in fact dominated by scattering from particles formed in the photolysis of the respective polycyclic aromatic hydrocarbon. (ucc.ie)
Carbon1
Our controlled design of non-alternant, heteroatom-doped polycyclic aromatic frameworks with established bottom-up fabrication techniques opens new opportunities in the synthesis of carbon nanostructures with the perspective of engineering properties of graphene-based devices. (nature.com)
ATSDR1
The HTML version https://www.atsdr.cdc.gov/csem/polycyclic-aromatic-hydrocarbons/cover-page.html provides content through the Internet. (cdc.gov)
Chemical2
This goal has been obtained by combining different inorganic and organic chemical proxies such as trace elements, polycyclic aromatic hydrocarbons, and lead isotope ratios and exploiting both principal component and factor analysis to associate chemical proxies to human-driven contamination processes. (springer.com)
In order to monitor for polyaromatic hydrocarbons, Nematic Technologies has created a wearable chemical monitor that is capable of detecting polyaromatic hydrocarbons. (nematictech.com)
Pyrolysis1
One possibility 9 is that PAH condensation initiates the formation of grains, similar to the formation of soot in hydrocarbon pyrolysis and combustion. (nature.com)
Sediment1
Three short sediment cores have been exploited to this aim and characterized in terms of major and trace elements, polycyclic aromatic hydrocarbons, and lead isotope ratios. (springer.com)
Composition1
The polycyclic aromatic hydrocarbon (PAH) composition of a diesel fuel and the exhaust emissions obtained from the fuel in a diesel vehicle driven on a chassis dynamometer have been determined by high resolution gas chromatography. (edu.au)
Dust1
This so-called IOM sampler was designed to meet the criteria for inhalable dust (EN 481). (rsc.org)
Molecules1
The benzenoid hydrocarbons have been defined as condensed polycyclic unsaturated fully-conjugated hydrocarbons whose molecules are essentially planar with all rings six-membered. (wikipedia.org)
Petroleum1
Panoramic view of the former open-air sedimentation basin at the Varennes field site, southern Montreal, Quebec, having extreme levels of petroleum hydrocarbon-pollutants. (studylib.net)
By definition, polycyclic aromatic hydrocarbons have multiple rings, precluding benzene from being considered a PAH. (wikipedia.org)
Therefore, in this molecule the outer rings have greater aromatic character whereas the central ring is less aromatic and therefore more reactive. (wikipedia.org)
However, the Ah receptor agonists containing four or five aromatic rings (i.e. (dtu.dk)
Risk2
To better assess the potential role of UGT1A10 in risk for tobacco-related cancers, the glucuronidation activity of UGT1A10 was compared with that of other known UGT enzymes against selected polycyclic aromatic hydrocarbons, and the effects of the codon 139 polymorphism on UGT1A10 function were examined in vitro. (aspetjournals.org)
Together, these studies implicate UGT1A10 as an important detoxifier of polycyclic aromatic hydrocarbons in humans and that the UGT1A10 codon 139 polymorphism may be an important determinant in risk for tobacco-related cancers. (aspetjournals.org)
Important2
According to Clar's rule, the resonance structure of a PAH that has the largest number of disjoint aromatic pi sextets-i.e. benzene-like moieties-is the most important for the characterization of the properties of that PAH. (wikipedia.org)
Curved π-conjugated polycyclic aromatic hydrocarbons, buckybowls, constitute an important class of materials with wide applications in materials science. (nature.com)
Work1
This work provides novel insight into the molecular partitioning of heterogeneous aromatic clusters, with particular relevance to the structure of nascent soot particles. (ntu.edu.sg)
Model1
Therefore we have used graphene as a model system for studying H interaction with very large polycyclic aromatic systems. (europa.eu)
Values1
hydrocarbon found among all types of oils, with the highest median values. (bvsalud.org)
Year2
The squares represent the hydrocarbon-polluted basin each year. (studylib.net)
Calendar time windows relevant to polycyclic aromatic hydrocarbon exposure were examined but could not be distinguished from the lagged (10-, 20-year) metrics. (cdc.gov)
Components1
One- to four-ring aromatic components of the exhaust emissions are predominately in the gas phase when sampled at 200 °C. The major aromatic components of the exhaust are toluene, phenylacetylene, styrene, indene, naphthalene, methylnaphthalenes and acenaphthalene. (edu.au)