3 edition of Polycyclic aromatic hydrocarbon structure index found in the catalog.
Polycyclic aromatic hydrocarbon structure index
1997 by U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology in Gaithersburg, MD .
Written in English
|Statement||Lane C. Sander and Stephen A. Wise|
|Series||NIST special publication -- 922|
|Contributions||Wise, Stephen A. 1949-, National Institute of Standards and Technology (U.S.)|
|The Physical Object|
|Number of Pages||104|
Bioavailability of High Molecular Weight Polycyclic Aromatic Hydrocarbons Using Renewable Resources. By Olusola Solomon Amodu, Tunde Victor Ojumu and Seteno Karabo Obed Ntwampe. Submitted: May 23rd Reviewed: October 29th Published: February 7th DOI: / Evaluation of Dermal Exposure to Polycyclic Aromatic Hydrocarbons in Fire Fighters, released by the Health Hazard Evaluation Program of the U.S. Department of Health and Human Services, Centers.
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NIST Standard Reference Database Last Update to Data Content: DOI: /TJ. A polycyclic aromatic hydrocarbon (PAH) is a hydrocarbon—a chemical compound containing only carbon and hydrogen—whose molecule has of multiple aromatic simplest such chemicals are naphthalene, having two aromatic rings, and the three-ring compounds anthracene and terms polyaromatic hydrocarbon or polynuclear aromatic hydrocarbon.
The site was created as part of the commitment of the Chemical Informatics Research Group of NIST's Material Measurement Laboratory to provide Standard Reference Data to industry, academia, and the U.S.
public, and builds on NIST Special Publication Polycyclic Aromatic Hydrocarbon Structure Index (SP) by Dr. Lane C. Sander and Dr. White KL Jr, Lysy HH, Holsapple MP. Immunosuppression by polycyclic aromatic hydrocarbons: a structure–activity relationship in B6C3F1 and DBA/2 mice.
Immunopharmacology. ; – [PubMed: ]Cited by: NISTSpecialPublication PolycyclicAromaticHydrocarbon StructureIndex ChemicalScienceandTechnologyLaboratory. Historically, benzene-like substances were called aromatic hydrocarbons because they had distinctive aromas.
Today, an aromatic compound is any compound that contains a benzene ring or has certain benzene-like properties (but not necessarily a strong aroma). You can recognize the aromatic compounds in this text by the presence of one or more benzene rings in their structure.
Polycyclic Aromatic Hydrocarbons (PAHs) Polycyclic aromatic hydrocarbons (PAHs) are a class of chemicals that occur naturally in coal, crude oil, and gasoline. They also are produced when coal, oil, gas, wood, garbage, and tobacco are burned.
PAHs generated from these sources can bind to or form small particles in the air. APPENDIX B POLYCYCLIC AROMATIC HYDROCARBONS IN THE AMBIENT ATMOSPHERE Compound Unsubstituted: Biphenyl Naphthalene Anthracene Phenanthrene Benz~aJanthracene Dibenz~ac~anthracene Benzotc~phenanthrene Benzota~fluorene Benzotbifluorene Dihydrobenzo~a,b, and c]£1uorenes Fluoranthene Benzotbifluoranthene.
Polycyclic Aromatic Hydrocarbons (PAHs) Factsheet. th edition. Donata Lerda. JRC - Polycyclic aromatic hydrocarbons, many of which have been identified as potent human carcinogens, occur widely in the environment as a result of incomplete combustion of fossil fuels and other organic matter.
Major sources of emissions are wood and coal burning, automobiles, heat and power plants, and refuse volume reviews the chemistry of polycyclic aromatic hydrocarbons /5(3). Aromatic hydrocarbons are a special class of unsaturated hydrocarbon based on a six carbon ring moiety called benzene. The saturated hydrocarbon cyclohexane is transformed into the aromatic hydrocarbon benzene by adding three alternating carbon–carbon double bonds, as shown in Fig.
The benzene structure can have two arrangements of these double bonds. Introduction. Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants (POPs) that exist as hazardous complex mixtures in nature, posing potential risks to natural ecosystems and human health (Wang et al., b).The United States Environmental Protection Agency (USEPA) has listed 16 typical PAHs as priority pollutants (Keith and Telliard, ).
(source: Nielsen Book Data) Polycyclic aromatic hydrocarbons (PAHs) have found applications in a variety of industries including dyes, drugs, semiconductors, fluorescent reagents, chemiluminescent reagents, and as polychromatic and antistatic additives for plastics.
Sander, L.C. and Wise, S.A. () Polycyclic Aromatic Hydrocarbon Structure Index. NIST Special Publication National Institute of Standards and Technology, United Sates Department of Commerce Technology Administration, Gaithersburg, MD NIST Special Publication (SP) is an aid in the identification of the chemical structures of polycyclic aromatic hydrocarbons (PAHs).
The Structure Index consists of two parts: (1) a cross index of named PAHs listed in alphabetical order and (2) chemical structures including ring numbering, name(s), Chemical Abstract Service (CAS) Registry numbers.
Polycyclic aromatic hydrocarbons (PAHs) are very widespread environmental contaminants, due to their formation during the incomplete combustion or pyrolysis of organic material. They are found in air, water, soils and sediments, generally at trace levels except near their sources. Tobacco smoke contains high concentrations of PAHs.
They are present in some foods and in. An aromatic hydrocarbon, or arene, is a hydrocarbon ring has alternating double and single bonds between carbon atoms forming rings. Many of the compounds have a sweet scent, hence the term 'aromatic'. The ring of six carbon atoms in aromatic compounds is known as a benzene ring, after the simplest possible hydrocarbon ring, benzene.
Hydrocarbon - Hydrocarbon - Structure and bonding: In the German chemist August Kekule von Stradonitz suggested the cyclic structure for benzene shown above. Kekule’s structure, while consistent with the molecular formula and the fact that all of the hydrogen atoms of benzene are equivalent, needed to be modified to accommodate the observation that.
Biodegradation of polycyclic aromatic hydrocarbons. Biodegradation, 3(), doi: /BF ^ Mihelcic, J.R., Luthy, R.G., Degradation of polycyclic aromatic hydrocarbon compounds under various redox conditions in soil-water systems.
Applied and Environmental Microbiology, 54(5), Journal Article Page. Polycyclic aromatic compounds (PACs) are widespread environmental contaminants.
There are many different types of PACs, including polycyclic aromatic hydrocarbons (PAHs), which are discussed below. PACs can occur in complex mixtures or be synthesized as individual chemicals. PACs are found naturally in fossil fuels (petroleum and. Chapter Polycyclic aromatic hydrocarbons (PAHs) General description Polycyclic aromatic hydrocarbons (PAHs) are a large group of organic compounds with two or more fused aromatic rings.
They have a relatively low solubility in water, but are highly lipophilic. Most of the PAHs with low vapour pressure in the air are adsorbed on particles.
Polycyclic aromatic hydrocarbons Associated Identifiers There is no information about former or incorrectly used identifiers. Structure There is no structure information for this substance. The following is a general review describing the current state of knowledge on the toxic responses observed for a wide variety of species exposed to polycyclic aromatic hydrocarbons (PAHs).
This perspective article summarizes recent applications of the combination of the activation strain model of reactivity and the energy decomposition analysis methods to the study of the reactivity of polycyclic aromatic hydrocarbons and related compounds such as cycloparaphenylenes, fullerenes and doped systems.
Quantitative structure–activity relationship (QSAR) study of carcinogenicity of polycyclic aromatic hydrocarbons (PAHs) in atmospheric particulate matter by random forest (RF)† Nan Li, a Juan Qi, a Ping Wang, a Xin Zhang, a Tianlong Zhang * a and Hua Li * ab.
Cherng SH, Lin ST, Lee H. Modulatory effects of polycyclic aromatic hydrocarbons on the mutagenicity of 1-nitropyrene: a structure-activity relationship study. Mut Res (4)– Chuang JC, Callahan PJ, Lyu CW, Wilson NK. Polycyclic aromatic hydrocarbon exposures of children in low-income families.
NIST creates polycyclic aromatic hydrocarbon structure index 7 Januaryby Tom Allison A screenshot from the NIST Polycyclic Aromatic Hydrocarbon Structure Index. To Your Health: Polycyclic Aromatic Hydrocarbons and Cancer.
The intense heating required for distilling coal tar results in the formation of PAHs. For many years, it has been known that workers in coal-tar refineries are susceptible to a type of skin cancer known as tar cancer. Investigations have shown that a number of PAHs are carcinogens.
Hydrocarbons are organic compounds consisting of carbon and hydrogen. The term aromatic refers to the compound containing a cyclic structure as typified by benzene. Poly refers to two or more aromatic rings. The presence of aromatic rings gives these compounds enhanced stability.
There are over known PAH structures. Polycyclic aromatic hydrocarbons are organic compounds (carbon based) which include only carbon and hydrogen with a structure of fused rings. They contain at least two fused benzene (six sided) rings.
They may contain other rings of carbon that are not six sided. Most do not dissolve easily into water, but some readily evaporate into the air. The bay region is the space between the aromatic rings of the PAH molecule. Figure 1.
PAH-induced carcinogenesis can result when a PAH-DNA adduct forms at a site critical to the regulation of cell differentiation or growth. A mutation occurs during cell replication if the aberration remains unrepaired. NIST Polycyclic Aromatic Hydrocarbon Structure Index; Options: Switch to calorie-based units; Data at NIST subscription sites: NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access.
The. Polycyclic aromatic hydrocarbons (PAHs, also polyaromatic hydrocarbons) are hydrocarbons—organic compounds containing only carbon and hydrogen—that are composed of multiple aromatic rings (organic rings in which the electrons are delocalized).Formally, the class is further defined as lacking further branching substituents off of these ring structures.
Table 3 Table PAH6 formula periodic table for benzenoid polycyclic aromatic hydrocarbons (PAH6) | Chem. Soc. Rev.,39, – This journal is. Some Non-heterocyclic Polycyclic Aromatic Hydrocarbons and Some Related Exposures IARC Monographs on the Evaluation of Carcinogenic Risks to Humans Volume IARC.
ISBN (Print Book) ISBN (PDF) Formats Print Book PDF. Other languages Cumulative Cross Index to IARC Monographs. Polycyclic aromatic hydrocarbons (PAHs) are a class of ubiquitous environmental contaminants formed during incomplete combustion processes.
Many of them have been identified as suspected human carcinogens (1), but threshold levels for carcinogenicity have not been determined for most PAHs. Occupational exposure. An aromatic hydrocarbon or arene (or sometimes aryl hydrocarbon) is a hydrocarbon with sigma bonds and delocalized pi electrons between carbon atoms forming a circle.
In contrast, aliphatic hydrocarbons lack this delocalization. The term "aromatic" was assigned before the physical mechanism determining aromaticity was discovered, and referred simply to the fact.
NIST Polycyclic Aromatic Hydrocarbon Structure Index; Options: Switch to calorie-based units; Data at NIST subscription sites: NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data) NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data).
Get this from a library. Polycyclic aromatic hydrocarbons: chemistry and carcinogenicity. [Ronald G Harvey] -- Polycyclic aromatic hydrocarbons, many of which have been identified as potent human carcinogens, occur widely in the environment as a result of incomplete combustion of fossil fuels and other.
foodstuff priority polycyclic aromatic hydrocarbons, J. Sep. Sci., 31, Gómez-Ruiz JA and Wenzl T, () Evaluation of gas chromatography columns for the analysis of the 15+1 EU-priority polycyclic aromatic hydrocarbons (PAHs).
Anal. Bioanal. Chem.,Lerda D, () Polycyclic Aromatic Hydrocarbons (PAHs) Factsheet. Polycyclic aromatic hydrocarbon Nitropolycyclic aromatic hydrocarbon Hydroxypolycyclic aromatic hydrocarbon Quinoid polycyclic aromatic hydrocarbon Structure Nomenclature This is a preview of subscription content, log in to check access.Polycyclic Aromatic Hydrocarbons, December U.S.
Public Health Service, U.S. Department of Health and Human Services, Atlanta, GA, December 2. United States Environmental Protection Agency, Office of Environmental Information, Emergency Planning and Community Right-to-Know Act – Section Guidance for.Polycyclic Aromatic Hydrocarbons in Fresh and Smoked Body Parts of Clarias gariepinus (Burchell, ) and the Possible Risks to Human Health E.
I. Adeyeye, O. A. Ibigbami, A. J. Adesina, R. A. Olatoye & A. Y. Gbolagade.