• Benzo(a)pyrene (B(a)P) is one of many identified PAHs. (swedishmatch.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)
  • In low symmetry PAHs such as benzo[a]pyrene, the Franck-Condon allowed total symmetric modes are already IR active. (oregonstate.edu)
  • Benzo(a)pyrene (BaP), the earliest and most significant carcinogen among polycyclic aromatic hydrocarbons (PAHs), has been found in foods, tobacco smoke, and automobiles exhaust, etc. (biomedcentral.com)
  • Urban restaurants that charbroil meat are a major emission source of fine particulate matter (PM) and polyaromatic hydrocarbons (PAHs) and receive frequent public complaints in large Korean cities. (aaqr.org)
  • The mass concentrations of total PAHs, major carcinogenic compounds, and benzo[a]pyrene-based equivalent concentration (BaPeq) were significantly higher in the coal-using home than in the electricity-using home. (cardiff.ac.uk)
  • For the electricity-using home, the PAHs might have been a combination of traffic and coal combustion sources. (cardiff.ac.uk)
  • In general, the mass concentrations of PAHs characteristic for car exhausts (benzo(ghi)perylene (BghiP), indeno(1,2,3-cd)pyrene (IP), and benzo(b)fluoranthene (BbF)) were higher during the whole year than concentrations of fluoranthene (Flu) and pyrene (Pyr), which originated mostly from domestic heating and biomass burning. (elsevierpure.com)
  • 2009), which is a source conclusion: Our findings indicate an association between occupational exposure to PAHs among of PAHs (Hearn et al. (cdc.gov)
  • The ability of prostaglandin synthetase (PGS) to cooxidize benzo( a )pyrene, benzo( a )anthracene, chrysene, and several of their dihydrodiol derivatives to mutagenic products was tested with Salmonella typhimurium strains TA98 and TA100. (aacrjournals.org)
  • The microsomal fraction of ram seminal vesicles, a known source of PGS, in the presence of the PGS substrate arachidonic acid, metabolized benzo( a )pyrene-7,8-dihydrodiol, benzo( a )anthracene-3,4-dihydrodiol, and chrysene-1,2-dihydrodiol to mutagenic products. (aacrjournals.org)
  • Benzo(a)anthracene (PubChem CID: 5954) vegetable oils and examined the identity through the fatty acids profiles. (bvsalud.org)
  • Seven PNA's (naphthalene, fluorene, phenanthrene, pyrene, chrysene, benzo[b]fluoranthrene, benzo[a]pyrene) were detected at trace concentrations (1 to 34 ppm) in bulk samples of the WCO. (cdc.gov)
  • Coconut, safflower, evening primrose, Benzo(b)fluoranthene (PubChem CID: 9153) and linseed oils marketed in São Paulo (Brazil) were investigated totaling 69 samples. (bvsalud.org)
  • Car exhaust is a major source of the carcinogenic and neurotoxic chemicals polycyclic aromatic hydrocarbons (PAH). (chem-tox.com)
  • GENERAL INFORMATION Benzo(a)pyrene is one of a group of compounds called polycyclic aromatic hydrocarbons. (ohio-state.edu)
  • IARC has determined that other TPH compounds (benzo[a]pyrene and gasoline) are probably and possibly carcinogenic to humans. (cdc.gov)
  • The effect of inhibitors on the spectrophotometric assay correlates well with the results obtained from benzo(a)pyrene metabolite analysis using high-pressure liquid chromatography. (lookformedical.com)
  • Differences in benzo(a)pyrene metabolite pattern have been shown by rodent liver microsomes (Sprague-Dawley) and rodent embryo cells from Syrian hamsters and NIH Swiss mice. (lookformedical.com)
  • Many of these compounds when found provide a means of identification of sources of input and pathways of movement of chemicals through the ecosystem. (chromatographytoday.com)
  • The concentrations of organic compounds in an environmental sample reflect both the original source of organic matter, as well as the alteration processes, which have occurred in the environment. (chromatographytoday.com)
  • As one of the most popular beverages in the world, coffee is a rich source of non-enzymatic bioactive compounds with antioxidant capacity. (bvsalud.org)
  • Optical spectral repetitive scan analysis during the oxidative metabolism of benzo(a)pyrene by liver microsomal suspensions reveals the time-dependent formation of an intermediate(s) of which the visible spectra resemble those of several benzo(a)pyrene phenols. (lookformedical.com)
  • 2018. Pharmacokinetics of [C]-Benzo[a]pyrene (BaP) in humans: Impact of Co-Administration of smoked salmon and BaP dietary restriction. . (oregonstate.edu)
  • This resulted in the reduction by more than 350 tons of particulate matter and 180 kg of harmful benzo (a) pyrene. (malopolska.pl)
  • With the frequencies from ZEKE, calibration of theoretical calculations with experiments becomes possible, particularly for the FIR region of cations where other types of experiments suffer from lack of light sources, insensitive detectors, and low particle concentrations. (oregonstate.edu)
  • Bushway, R.J. 1995: In vitro binding of benzo[ ]pyrene by extruded potato peel. (thehealthsite.com)
  • An epoxide hydrase inhibitor, 1,1,1-trichloropropene-2,3-oxide, enhanced phenol formation regardless of the source of liver microsomes, and 7,8-benzoflavone inhibited control and 3-methylcholanthrene-induced microsomal metabolism of benzo(a)pyrene, 7,8-Benzoflavone did not effect benzo(a)pyrene metabolism by liver microsomes from phenobarbital-pretreated rats. (lookformedical.com)
  • Differences in benzo(a)pyrene metabolism between rodent liver microsomes and embryonic cells. (lookformedical.com)
  • Everyone is exposed to TPH from many sources, including gasoline pumps, spilled oil on pavement, and chemicals used at home or work. (cdc.gov)
  • And, of course, there are no natural sources of mercury in and around Antarctica (such as perhaps sea/sub-glacial volcanos or other seeps) to provide the bacteria with mercury to methylate. (wattsupwiththat.com)
  • The sedimentary organic matter results from a complex combination of both natural and anthropogenic sources [1-7]. (chromatographytoday.com)
  • In order to differentiate the various inputs of organic matter, molecular marker approaches have been developed on the potential of molecules to be source specific [2-4,8,9]. (chromatographytoday.com)
  • The purpose of the present paper is the characterisation of organic molecular markers detected in the river sediment by GC/MS analysis to evaluate the degree of contamination and identify the sediment sources in a surface water catchment in Romania. (chromatographytoday.com)
  • The research below should give weight to the critical importance of rapidly accelerating the move away from gasoline powered vehicles and to other fuel sources such as natural gas and electric. (chem-tox.com)
  • however, the gasoline used as a fuel in the 'skiffs' (small flat-bottomed boats) was the likely source, rather than the WCO. (cdc.gov)
  • Combustion of diesel and gasoline from vehicles was found to be one of the main PAH sources. (elsevierpure.com)
  • Agriculture is the dominant source of ammonia emissions. (beis.gov.uk)
  • The work of tetracene and pentacene also combine a laser desorption source with a ZEKE spectrometer, demonstrating our capability for studies of thermally labile species. (oregonstate.edu)
  • These results suggest that activation and detoxification of benzo(a)pyrene may be species and tissue variable, and susceptibility and resistence to malignant transformation may be predicted on induction of a fortuitous combination of intermediate metabolic steps. (lookformedical.com)
  • In parts of Europe, domestic heating with wood and coal is the most important source of harmful pollutants. (europa.eu)
  • area sources - Air pollution sources that are not licensed under law (i.e., cars, homes, Laundromats, etc. (cibo.org)
  • Positive controls benzo(a)pyrene, and methylmethanesulfonate showed significantly increased CA formation. (europa.eu)
  • The main sources of these pollutants are road transport, domestic heating, agriculture and industry. (europa.eu)
  • In cities, where about three out of four Europeans live, road transport is often the main source of air pollution, especially because cars emit pollutants at the ground level, close to people. (europa.eu)
  • What is common to the sources of air pollutants is that they are deeply rooted in our societies' core systems of mobility, energy and food production and consumption. (europa.eu)
  • These same systems are not only the main sources of air pollutants, but also the root causes of the climate crisis and the rapid loss of biodiversity. (europa.eu)
  • In contrast the strong increase in the use of transportation and road traffic, an important source for many air quality and transboundary pollutants, has resulted in the increase in emissions from the combustion of petrol and diesel, although this has been counteracted by improvements in emissions from individual vehicles due to tighter vehicle emission regulations. (beis.gov.uk)
  • Emission trends of selected pollutants (NO x , SO 2 , NMVOC, NH 3 , PM 10 , and CO) from key source categories since 1990 are summarised in the latest UK Informative Inventory Report in the Reports section and Defra statistical releases . (beis.gov.uk)
  • These results are indicative of a region-specific attack on the carcinogen by the cell monooxygenases which is distinct from the liver attack of microsomal enzymes on benzo(a)pyrene. (lookformedical.com)
  • However, an analogue read across justification is attached to this dossier to justify using read across data from similar source substances. (europa.eu)
  • Because of the structural similarity between the source substances and DEGME, particularly with respect to function groups and their surrounding atomic environment, these results can be reliably extrapolated from the former to the latter. (europa.eu)
  • Such substances have no place in sources for drinking water. (riwa-maas.org)
  • A few examples of this category of substances that exceed standards or target values are Fluoride, Di-isopropylether, Tributylphosphate, complexing agents and Benzo(a)pyrene. (riwa-maas.org)
  • As a result of the distances travelled and chemical changes that occur, it is very difficult to pinpoint which emission source (e.g. sulphur dioxide emissions from a factory), in which location, has led to a specific impact in another location (e.g. increased acidity in a lake). (beis.gov.uk)
  • Since then, three years have elapsed, and the effects of the implemented actions include 22 thousand of the old sources of coal burning replaced and investments worth PLN 585 million. (malopolska.pl)
  • The report presents the Expert Committee's conclusions on the health implications of these contaminants from exposure through food, and identifies key exposure sources and prevention and control measures to reduce human exposure. (who.int)
  • The direct spectrophotometric observation of benzo(a)pyrene phenol formation by liver microsomes. (lookformedical.com)
  • When 3-hydroxybenzo(a)pyrene was used as a standard for comparison of activity, the rates of formation of phenols were compared when measured by fluorometric, spectrophotometric, or high-pressure liquid chromatographic analytical techniques. (lookformedical.com)
  • Formation in isolated rat liver microsomes and nuclei of benzo(a)pyrene metabolites that bind to DNA. (lookformedical.com)
  • The experiment involves two tunable ultraviolet laser sources, one to excite the vaporized PAH molecules to the first excited electronic state with different levels of vibrational energy, and the other to further reach the Rydberg states just below the ionization threshold of a vibrational level of the cation. (oregonstate.edu)
  • Werman, M.J. 1996: Hypocholesterolaemic effect of potato peel as a dietary fiber source. (thehealthsite.com)
  • Occupational Exposure To Benzo(a)pyrene. (cdc.gov)
  • Policymakers considering clean air regulations should include waterpipe tobacco smoking, and the public should be warned about this source of smoke exposure. (who.int)
  • The report presents general considerations and guidance on the principles governing the toxicological evaluation and assessment of dietary exposure to food additives, particularly on data requirements for products derived from natural sources. (who.int)
  • The diol-epoxide r-7,t-8-dihydroxy-t-9,10-oxy-7,8,9,10-tetrahydrobenzo(a)pyrene is a potent mutagen and possibly the ultimate carcinogenic form of benzo(a)pyrene. (lookformedical.com)
  • RÉSUMÉ Afin d'atteindre les objectifs de santé fixés par le pays pour 2011-2016, une analyse qualitative de l'exposition aux facteurs de risque de cancer au Qatar a été conduite en 2013. (who.int)
  • Les risques de cancer les plus élevés pour les Qatariens proviendraient de facteurs associés aux modes de vie, en particulier l'obésité, la sédentarité et le tabagisme. (who.int)
  • A dedicated paragraph presents the sources of water pollution, with direct effects on eutrophication, fish reproduction, and their populations. (mdpi.com)
  • This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited. (aaqr.org)
  • Sources which account for high shares of emissions differ from pollutant to pollutant. (beis.gov.uk)
  • The hepatic nuclear fraction isolated from 3-methylcholanthrene (MC)-treated rats contained enhanced levels of cytochrome P-450 and aryl hydrocarbon hydroxylase [benzo(a)pyrene (BP) monooxygenase], whereas the activities of epoxide hydrase and reduced nicotinamide adenine dinucleotide phosphate-cytochrome c reductase and the concentration of cytochrome b5 were not altered. (lookformedical.com)
  • These data represent a valuable tool in future plans and actions to control PAH sources and to improve the quality of life of urban populations. (elsevierpure.com)
  • Additional pattern changes were found in mouse and hamster embryo secondary cultures with a reduction of the K-region metabolites and a marked increase in 9-hydroxybenzo(a)-pyrene. (lookformedical.com)