Topic
Aromatic hydrocarbon
About: Aromatic hydrocarbon is a research topic. Over the lifetime, 5814 publications have been published within this topic receiving 55499 citations. The topic is also known as: arene & arenes.
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TL;DR: In this article, structural changes induced by controlled aerial oxidation of an Australian high volatile bituminous coal, Blair Athol, have been studied by transmission infrared (IR) spectroscopy and other techniques.
34 citations
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TL;DR: The metal-atom-arene-vapor co-condensation technique is the most appropriate to generate complexes of polycyclic aromatic hydrocarbons or heterocycles as mentioned in this paper.
34 citations
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TL;DR: In this paper, the fate of petroleum compounds in the marine environment was investigated using experimental microcosms of two sizes and designs, including sediment and benthic organisms (Glycera americana, Crepidula sp., and Nephtys incisa).
Abstract: Investigations into the fate of petroleum compounds in the marine environment were carried out using experimental microcosms of two sizes and designs. Aromatic hydrocarbons or No. 2 fuel oil were spiked to the water of a 13 m3 continuous flow system and to a 2281 recycled flow system. The transport and alteration of this oil was traced in the sediment and benthic organisms (Glycera americana, Crepidula sp., and Nephtys incisa) of these microcosms. Measurable contamination was found in both sample types. The aromatic hydrocarbon distribution, including relative isomeric distribution (e.g., C2‐phenanthrenes) was found to be different in sediment and in organisms from that which was originally introduced to the experimental microcosm. Differences in isomer distribution between Glycera and Crepidula were also detected. Based on the experimental data: molecular weight and specific isomeric form, biochemical processes, solubility, and particle adsorption/desorption influence the fate of petroleum compounds in b...
34 citations
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TL;DR: Chemical, biochemical and biological evidence will be presented supporting the important role of one-electron oxidation in the activation of PAH leading to initiation of cancer.
Abstract: Most carcinogens, including polycyclic aromatic hydrocarbons (PAH), require metabolic activation to produce the ultimate electrophilic species that bind covalently with cellular macromolecules to trigger the cancer process. Metabolic activation of PAH can be understood in terms of two main pathways: one-electron oxidation to yield reactive intermediate radical cations and monooxygenation to produce bay-region diol epoxides. The reason we have postulated that one-electron oxidation plays an important role in the activation of PAH derives from certain common characteristics of the radical cation chemistry of the most potent carcinogenic PAH. Two main features common to these PAH are: 1) a relatively low ionization potential, which allows easy metabolic removal of one electron, and 2) charge localization in the PAH radical cation that renders this intermediate specifically and efficiently reactive toward nucleophiles. Equally important, cytochrome P-450 and mammalian peroxidases catalyze one-electron oxidati...
34 citations
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TL;DR: The toxicity of a reference sediment supplemented with mixtures of seven aromatic hydrocarbons (fluoranthene, phenanthrene, benz[a]anthracene, benzo[a]-pyrene (BaP), 2,6-dimethylnaphthalene (DMN), 1-methylnaphthane, and 2-methyltetane (2-mTHN) was evaluated in amphipod lethality bioassays as mentioned in this paper.
34 citations