Pyrene


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pyrene

 

an aromatic hydrocarbon; pale yellow crystals. Melting point 150°C; boiling point, 390°C. It is freely soluble in ether and benzene, and has limited solubility in alcohol; insoluble in water.

Pyrene is a constituent of the anthracene fraction in coal tar; it can be obtained from coal tar and petroleum cracking products. It is the raw material for the preparation of certain semifinished products in the manufacture of polycyclic dyes—for example, 3-nitropyrene, tetrachloropyrenequinone, and naph-thalene-l,4,5,8-tetracarboxylic acid.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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On the other hand, naphthalene, acenaphthene, fluorene, anthracene, pyrene and benzo(g,h,i)perylene were not detected during both rest and work periods.
Therefore, the aim of this study was to investigate the effect of the solvent nature and concentration on the sorption and fluorescence of pyrene on a CDA matrix and to estimate the possibility of PAH quantitation in aqueous medium using this method.
Diaz, "Spanish smoked meat products: benzo (a) pyrene (BaP) contamination and moisture," Journal of Food Composition and Analysis, vol.
Therefore, in this context, and seeking promising species for use in future studies about biodegradation and bioremediation of PAHs, this research aimed to evaluate the tolerance to phenantherene and pyrene by filamentous fungi isolated from contaminated sediments of the Amazon region.
Pyrene excitation spectrum was obtained by fixing the emission wavelength at 390 nm and the excitation wavelength was scanned between 300 and 350 nm.
Caption: FIGURE 1: Chromatogram of a standard polycyclic aromatic hydrocarbons solution: 1: naphthalene, 2: acenaphtene, 3: fluorene, 4: phenanthrene, 5: anthracene, 6: fluoranthene, 7: pyrene, 8: benz [a]anthracene, 9: chrysene, 10: benzo[b]fluoranthene, 11: benzo[k] fluoranthene, 12: benzo[a]pyrene, 13: dibenz[a,h]anthracene, 14: benzo[ghi]perylene, and 15: indeno[1,2,3-cd]pyrene.
Measurement of benzo (a) pyrene in the ambient air for the estimation of carcinogenic risk.
Similarly, bezo( a) pyrene in smoked fishery products should not be more than 5 ppb, said a senior official in FSSAI.
Studied PAHs in the samples were Acenaphthene (Ace), Acenaphthylene (Acy), Anthracene (Ant), Anthanthrene (Anth), Benzo [a] Anthracene (BaA), Benzo [b] Fluoranthene (BbF), Benzo [a] Pyrene (BaP), Benzo [e] Pyrene (BeP), Benzo [ghi] Perylene (BgP), Benzo [k] Fluoranthene (BkF), Cyclopenta cd Pyrene (CcdP), Chrysene (Chr), Dibenzo [a,h] Anthracene (DahA), Fluorene (Flu), Fluoranthene (Flt), Phenanthrene (Phe), Pyrene (Pyr), Indeno [1,2,3-cd] Pyrene (Ind) [30].
De nombreux acteurs ont pris part a ce long metrage, parmi eux Youcef Sehairi, auquel a ete confie le role du colonel Lotfi et le Francais Joel Pyrene qui joue le role d'un brigadier de police.
Cyclobutane is condensed to aromatic rings such as benzene, naphthalene, anthracene, and pyrene and may have different substituents such as alkyl, alkoxy, alkylthio, and aryl groups.