Results 251 to 260 of about 98,718 (288)

Mechanisms for polycyclic aromatic hydrocarbon (PAH) growth

Chemical Physics Letters, 2000
Abstract We compute the barriers and heats of reaction for the conversion of benzene to naphthalene by acetylene additions using the B3LYP/4-31G approach. The Frenklach mechanism for adding a ring to a PAH molecule is compared with the Bittner–Howard acetylene addition mechanism. Both have low barriers, and the similarities and differences of the two
Charles W. Bauschlicher Jr, Alessandra Ricca   +1 more
openaire   +1 more source

Microbial Bioremediation Techniques for Polycyclic Aromatic Hydrocarbon (PAHs)—a Review

Water, Air and Soil Pollution, 2022
N. Ismail, N. Kasmuri, Nurhidayah Hamzah
semanticscholar   +1 more source

Polycyclic Aromatic Hydrocarbon (PAH) Ecotoxicology in Marine Ecosystems

Journal of Toxicology and Environmental Health, Part A, 2006
Low levels of oil and hence polycyclic aromatic hydrocarbons (PAHs) are naturally present in the marine environment, although levels have increased significantly following human extraction and use of oil and gas. Other major anthropogenic sources of PAHs include smelters, the use of fossil fuels in general, and various methods of waste disposal ...
openaire   +2 more sources

IMMUNOCHEMICAL DETECTION OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs)

Analytical Letters, 2002
This review gives a short introduction in the origin, occurrence and detection of polycyclic aromatic hydrocarbons (PAHs). Emphasis lies on immunochemical detection methods for PAH compounds, such as ELISA, RIA, fluoroimmunosensors, QCM immunosensors and electrochemical immunosensors, but also on immunosorbents and commercial immunoassay kits for PAHs.
Karsten A. Fähnrich, Miloslav Pravda, George G. Guilbault   +2 more
openaire   +1 more source

Sorption of polycyclic aromatic hydrocarbons (PAHs) on glass surfaces

Chemosphere, 2011
Sorption of polycyclic aromatic hydrocarbons (PAHs) to glass commonly used in laboratories was studied. Sorption coefficients (Kd) of five selected PAHs to borosilicate glass surfaces were measured using column chromatography. A linear relationship between log Kd and the corresponding water solubility of the subcooled liquid (log Sw) of the ...
Qian, Yuan, Posch, Tjorben, Schmidt, Torsten Claus   +2 more
openaire   +2 more sources

Remediation of soils contaminated with polycyclic aromatic hydrocarbons (PAHs)

Journal of Hazardous Materials, 2009
Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic micropollutants which are resistant to environmental degradation due to their highly hydrophobic nature. Concerns over their adverse health effects have resulted in extensive studies on the remediation of soils contaminated with PAHs.
S, Gan, E V, Lau, H K, Ng
openaire   +2 more sources

Polycyclic aromatic hydrocarbons (PAH) in different forest humus types

Environmental Science and Pollution Research, 1996
The behavior of 20 PAH in the organic layers of a L mull, an Of mull and a mor was assessed by a combined approach of a soil profile study, and the analysis of particle-size separates. Increasing PAH concentrations with depth in the mor profile (L, 866 μg kg(-3); Of, 2902 μg kg(-1); Oh, 10489 ug kg(-1)) were assigned to selective enrichment during ...
M, Pichler, G, Guggenberger, R, Hartmann, W, Zech   +3 more
openaire   +2 more sources

Polycyclic aromatic hydrocarbons (PAHs) in foods

2013
Polycyclic aromatic hydrocarbons (PAHs) are found in our environment. The major route of human exposure for nonsmokers is however via food. PAHs in food originate from environmental deposits or arise from food processing. Food processing techniques contributing to increased PAH concentrations include smoking, drying, roasting and barbecuing.
openaire   +2 more sources

Toxic equivalency factors (TEFs) for polycyclic aromatic hydrocarbons (PAHs)

Regulatory Toxicology and Pharmacology, 1992
The polycyclic aromatic hydrocarbons (PAHs; also referred to as the polynuclear aromatic hydrocarbons or PNAs) are commonly encountered at hazardous waste sites and are often the focus of site remediation activities. However, toxicity criteria are not available for all the PAHs.
I C, Nisbet, P K, LaGoy
openaire   +2 more sources

Polycyclic aromatic hydrocarbons (PAHs) removal by sorption: A review

Chemosphere, 2016
Polycyclic aromatic hydrocarbons (PAHs) are organic micro pollutants which are persistent compounds in the environment due to their hydrophobic nature. Concerns over their adverse effects in human health and environment have resulted in extensive studies on various types of PAHs removal methods.
Lamichhane, Shanti, KC, Bal Krishna (R18329), Sarukkalige, Ranjan   +2 more
openaire   +3 more sources