Results 51 to 60 of about 43,860 (248)

The contamination of bottom sediments in the Southern Baltic with polycyclic aromatic hydrocarbons (PAHs)

Ecocycles, 2016
The study involved a comparative analysis of PAH (polycyclic aromatic hydrocarbons) concentrations in the bottom sediments of the southern part of the Baltic Sea. It was determined that the contamination of sediments with PAHs is considerable (>500 ng/g),
Karolina Bartkowski, Anita Lewandowska, Julia Gaffke, Jarzy Bolalek   +3 more
doaj   +1 more source

Polycyclic aromatic hydrocarbons in soybean grains

Heliyon, 2020
During the burning of the organic material (firewood) in the drying, combustion may occur incompletely, thus generating smoke contaminants such as polycyclic aromatic hydrocarbons (PAHs) in the furnaces.
Rosana Maria Pereira Silva, Osvaldo Resende, Jaqueline Ferreira Vieira Bessa, Fernanda Moralez Leme Gomes, Silvia Amélia Verdiani Tfouni, Adrielle Borges de Almeida   +5 more
doaj   +1 more source

Polycyclic aromatic hydrocarbons in permafrost peatlands

Scientific Reports, 2021
The concentrations of 15 individual PAHs in 93 peat cores have been determined by using high-performance liquid chromatography methods. In the profile the qualitative and quantitative composition of PAHs was non-uniform estimated in a wide range: from ...
Alexander Pastukhov, Sergey Loiko, Dmitry Kaverin   +2 more
doaj   +1 more source

Evaluation of the content and degradation rates of PAHs in biochars, in terms of assessing the environmental risks of their application for soil remediation

Georesursy
The growing worldwide practice of biochar application as soil ameliorants, as well as adsorbents for remediation of soil contaminated with oil products and heavy metals, can lead to an increase the risk of environmental pollution by pyrolysis by-products.
R. V. Okunev, E. V. Smirnova, K. G. Giniyatullin   +2 more
doaj   +1 more source

Quantum walks in polycyclic aromatic hydrocarbons

New Journal of Physics, 2021
Aromaticity is a well-known phenomenon in both physics and chemistry, and is responsible for many unique chemical and physical properties of aromatic molecules.
Prateek Chawla, C. M. Chandrashekar
doaj   +1 more source

Solid-liquid organic matter interaction mechanism between kerogen and aromatic compounds

Shiyou shiyan dizhi
Under geological conditions, the initial generation of oil and gas in source rocks reaches saturation before being expelled and migrating, with the adsorption of hydrocarbons by kerogen being a key factor influencing oil saturation.
Xiaohui LIN, Tian LIANG, Yanrong ZOU, Cheng TAO, Yuan WANG   +4 more
doaj   +1 more source

IDENTIFICATION OF SOME CARCINOGENIC POLYCYCLIC AROMATIC HYDROCARBONS IN BANGLADESHI VEHICLES EXHAUST TAR BY GAS CHROMATOGRAPHY-MASS SPECTROPHOTOMETER

Indonesian Journal of Chemistry, 2010
A more sensitive GC-MS method has been established for the determination of some carcinogenic polycyclic aromatic hydrocarbons (PAHs) in vehicles exhaust tar samples. The tar samples were extracted using dichloromethane (DMC): n-hexane solvent mixture. A
M. Amzad Hossain, S. M. Salehuddin
doaj   +1 more source

Soil sealing degree as factor influencing urban soil contamination with polycyclic aromatic hydrocarbons (PAHs)

Soil Science Annual, 2016
The objective of the study was to determine role of soil sealing degree as the factor influencing soil contamination with polycyclic aromatic hydrocarbons (PAHs). The study area included four sampling sites located within the administrative boundaries of
Mendyk Łukasz, Charzyński Przemysław
doaj   +1 more source

Association between urinary polycyclic aromatic hydrocarbon metabolites and sleep disturbances: A cross-sectional study integrating machine learning and network toxicology

Journal of International Medical Research
Objective Although humans are widely exposed to polycyclic aromatic hydrocarbons, current evidence on the association between urinary polycyclic aromatic hydrocarbon metabolites and sleeping troubles remains limited.
Yiren Bao, Bo Liang, Yankai Dong, Rui Wang   +3 more
doaj   +1 more source

Polycyclic aromatic hydrocarbons

, 2007
Polycyclic aromatic hydrocarbons (PAH) are a group of structurally related chemical compounds that are frequently produced during incomplete combustion of organic matter and are among the most widespread environmental pollutants. This chapter enumerates common sources of environmental PAH that contribute to human exposures including air and water ...
Stellman, Steven D., Guidotti, Tee L.
openaire   +2 more sources