Survey of Some Market Basket Commodities for Polynuclear Aromatic Hydrocarbon Content

Abstract The Food and Drug Administration multicomponent regulatory procedure for determining polynuclear aromatic hydrocarbons in foods was recently used to survey 24 foodstuffs for the presence of these compounds. The procedure has a reliable limit of quantitation of 2 ppb. The potent carcinogen benzo (a) pyrene was detected in only one of the 24 products analyzed, at a level of 3 ppb. Pyrene and/or fluoranthene were found in 19 of the 24 samples examined, at levels ranging from less than 1 ppb to about 75 ppb. A comparison of the recent survey data to that obtained approximately 10 years ago reveals that the types and levels of polynuclear aromatic hydrocarbons found are essentially unchanged.

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Composition of N – Alkanes and Polynuclear Aromatic Hydrocarbons in Jatropha curcas Seed Oil from Different Locations

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.824.311 ◽

2013 ◽

Vol 824 ◽

pp. 311-317

Author(s):

E.T. Akhihiero ◽

E.O. Aluyor ◽

T.O.K. Audu

Keyword(s):

Gas Chromatography ◽

Aromatic Hydrocarbons ◽

Jatropha Curcas ◽

Seed Oil ◽

Polynuclear Aromatic Hydrocarbons ◽

Polynuclear Aromatic Hydrocarbon ◽

Ionization Detector ◽

Flame Ionization ◽

Hydrocarbon Content ◽

Edo State

The hydrocarbon content of Jatropha curcas seed oil obtained from Oleh Community in Delta State, NIFOR farm in Edo State and Ikabigbo in Edo State represented as samples X, Y and Z respectively were investigated using Gas Chromatography with flame ionization detector. The predominant alkanes found in the oil samples are n-Eicosane (C20H42) and n-Docosane (C22H46), while the major polynuclear aromatic hydrocarbon found in the oil samples is chrysene. Sample X has the highest percentage of n-Eicosane (65.72%), sample Y has 35.56% n-Eicosane while sample Z has the lowest n-Eicosane (0.23%). Sample Z has the highest percentage of n-Docosane (91.38%), sample Y has 60.11% n-Docosane with sample X being the lowest (22.65%). The percentage of chrysene in sample Y is highest (100%), sample X has 97.47% while sample Z has the lowest percentage of chrysene (44.75%).

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Organic and biological spectrochemical studies. XXVIII. Electron spin resonance spectra of some polynuclear aromatic hydrocarbon ions

Canadian Journal of Chemistry ◽

10.1139/v70-320 ◽

1970 ◽

Vol 48 (12) ◽

pp. 1942-1945 ◽

Cited By ~ 4

Author(s):

J. T. Cooper ◽

W. F. Forbes ◽

J. C. Robinson

Keyword(s):

Electron Spin Resonance ◽

Aromatic Hydrocarbon ◽

Electron Spin ◽

Aromatic Hydrocarbons ◽

Boron Trifluoride ◽

Polynuclear Aromatic Hydrocarbons ◽

Oxidizing Agent ◽

Polynuclear Aromatic Hydrocarbon ◽

Spin Resonance ◽

Anions And Cations

The electron spin resonance spectra are presented for the anions and cations of the polynuclear aromatic hydrocarbons anthanthrene, benz[ghi]perylene, benz[e]pyrene, dibenz[fg,op]naphthacene, and dibenz[a,c]triphenylene. The cation of dibenz[fg,op]naphthacene is shown to form a dimer under certain conditions.The usefulness of a new oxidizing agent for the production of the cations, boron trichloride, has been investigated and was found to afford comparable spectra to boron trifluoride, using sulfur dioxide as solvent.

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Correlation of Polynuclear Aromatic Hydrocarbon Formation Between Pyrolysis and Smoking

Beiträge zur Tabakforschung International/Contributions to Tobacco Research ◽

10.2478/cttr-2013-0423 ◽

1977 ◽

Vol 9 (1) ◽

Author(s):

R. F. Severson ◽

W. S. Schlotzhauer ◽

R. F. Arrendale ◽

M. E. Snook ◽

H. C. Higman

Keyword(s):

Molecular Weight ◽

Aromatic Hydrocarbon ◽

Petroleum Ether ◽

High Molecular Weight ◽

Cigarette Smoke ◽

Aromatic Hydrocarbons ◽

Polynuclear Aromatic Hydrocarbons ◽

Polynuclear Aromatic Hydrocarbon ◽

Cigarette Smoke Condensate ◽

Hydrocarbon Formation

AbstractTobacco, its petroleum ether (PE) extract, and the residual extracted tobacco (marc) were pyrolyzed at 650-750°C, 650-850°C, and 700°C, respectively. Analyses of the polynuclear aromatic hydrocarbons (PAH) produced showed that the pyrolysis of the tobacco and the PE extract at 700°C produced PAH profiles comparable to those found in cigarette smoke condensate (CSC). The data indicated that most of the alkyl PAH and the major PAH in cigarette smoke are derived from the PE extractables of tobacco. The constituents of the marc were the major precursors for phenols, oxygenated PAH, and Iow molecular weight acids; and those of PE extract were the major producers of high molecular weight acids.

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Elucidation of substrate interaction effects in multicomponent systems containing 3-ring homocyclic and heterocyclic polynuclear aromatic hydrocarbons

Environmental Science Processes & Impacts ◽

10.1039/d1em00140j ◽

2021 ◽

Author(s):

Prasenjit Ghosh ◽

Suparna Mukherji

Keyword(s):

Aromatic Hydrocarbon ◽

Bacterial Growth ◽

Aromatic Hydrocarbons ◽

Interaction Effects ◽

Polynuclear Aromatic Hydrocarbons ◽

Multicomponent Systems ◽

Polynuclear Aromatic Hydrocarbon ◽

Substrate Interaction

Bacterial growth and degradation experiments were conducted on carbazole (CBZ), fluorene (FLU) and dibenzothiophene (DBT) individually and in various mixture combinations using an efficient polynuclear aromatic hydrocarbon (PAH) degrading bacterial...

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A green dispersive liquid phase microextraction technique based on the solidification of switchable hydrophilic fatty acid for determination of polynuclear aromatic hydrocarbons in aqueous samples

Water Science & Technology ◽

10.2166/wst.2018.480 ◽

2018 ◽

Vol 79 (1) ◽

pp. 93-103 ◽

Cited By ~ 5

Author(s):

Mahsa Sadat Hosseininejad ◽

Hakim Faraji ◽

Ahmad Jamshidi

Keyword(s):

Fatty Acid ◽

Liquid Phase ◽

Aromatic Hydrocarbons ◽

Polynuclear Aromatic Hydrocarbons ◽

Detector Response ◽

Aqueous Samples ◽

Liquid Phase Microextraction ◽

Relative Standard ◽

Limit Of Quantitation

Abstract A green dispersive liquid phase microextraction approach based on the solidification of switchable hydrophilic fatty acid as an extraction phase has been developed for the determination of 16 priority polynuclear aromatic hydrocarbons (PAHs) in aqueous samples. In this study, the centrifugation step was omitted by the applying salting-out phenomenon. The influence of main variables on the efficiency of the procedure was studied by chemometric methods. Under optimal conditions, the completion time for extraction was less than 1 min, and the detector response was linear in the range of 0.1–250 μg L−1. Limit of detection and limit of quantitation were estimated as the concentration range of 0.01–0.14 μg L−1 and 0.03–0.47 μg L−1, respectively. The precision consists of repeatability and reproducibility, which were determined by calculating the relative standard deviation percent; their values were less than 7.2% and 10.5%, respectively. Applicability of the developed procedure was successfully evaluated for the analysis of PAHs in different water samples.

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