Background: Polycyclic aromatic hydrocarbons (PAHs), which consist of fused conjugated aromatic rings, not only are toxic to humans and other living organisms, but will also pollute groundwater. These compounds can be point source or non-point source and are one of the most widespread organic pollutants. Some of them are suspected carcinogens and are linked to other health problems. This study ...

Polycyclic aromatic hydrocarbons (PAHs) are widespread pollutants and they can cause cancer, abnormality mutation. Nine natural PAHs-degrading bacteria were obtained from polluted areas. These the bacterial mixture degrade phenanthrene, anthracene, pyrene benzo[a]pyrene. The increase degradation rates of several PAHs compounds, such as phenanthrene benzo[a]pyrene, during repaired process, these...

A quantitative structure–activity relationship model for the photoinduced toxicity of 16 polycyclic aromatic hydrocarbons (PAHs) to duckweed (Lemna gibba) in simulated solar radiation (SSR) was developed. Lemna gibba was chosen for this study because toxicity could be considered in two compartments: water column and leaf tissue. Modeling of photoinduced toxicity was described by photochemical r...

The genus Rhodococcus is known for its ability to degrade various xenobiotic compounds. Rhodococcus sp. strain P14 isolated from crude oil-contaminated sediments can degrade mineral oil and polycyclic aromatic hydrocarbons (PAHs). The draft genome sequence of Rhodococcus sp. P14 was obtained using Solexa technology, which provided an invaluable genetic background for further investigation of th...

Polymorphic metal-organic framework (MOF) materials offer a platform for small-scale separation of complex mixtures of polycyclic aromatic hydrocarbons (PAHs) and polar compounds. Retention factors show dependence on both analyte dimensions and polarity, suggesting mixed-mode separation, allowing complete resolution of some analytes from multi-component mixtures.

Volatile organic compounds (VOC) are emitted during the combustion process. They originate from the organic components of fossil fuels, or are formed during the combustion process. For example, the addition of smaller aliphatic compounds, cyclization, and transformation into aromatic hydrocarbons leads to polycyclic aromatic compound (PAH) formation. Some PAHs are known to be carcinogenic. The ...

A new approach using fast atom bombardment combined with mass spectrometry to characterize polycyclic aromatic hydrocarbons (PAHs) in the range of 128-252 u molecular weight is described. Sulfolane was employed as a liquid matrix for these π-conjugated hydrocarbons. Bombardment of sulfolane solution of certain PAHs with an atom beam produces both radical cation (M(+.)) and protonated molecule [...

Background: Polycyclic aromatic hydrocarbons (PAHs) are a predominant group of contaminants that have been shown to accumulate and persist in marine organisms. We evaluated the dose-dependent induction of the cytochrome P4501A (CYP1A) system in the Sturgeon fish, Huso huso after after exposure to PAHs, beta-naphthoflavone (BNF) and 3- methylcholantheren. Methods: The fish were treated by i.p...

The influence of reactor type and operating conditions of the pyrolysis unit on the final concentration of toxic contaminants in biochar remains unclear. Therefore, we determined the concentrations of polycyclic aromatic hydrocarbons (PAHs), oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs), nitrogen-containing polycyclic aromatic compounds (N-PACs), polychlorinated dibenzo-p-dioxins (PCDD...