The influence of the type smoking process (natural/liquid; hot/cold) and salt (NaCl or KCl) on levels polybrominated diphenyl ethers (PBDEs) polycyclic aromatic hydrocarbons (PAHs) in smoked salmon was evaluated. One parent compound - BDE 47 two methoxylated forms 2?-MeO-BDE-68 6-MeO-BDE-47 were detected all samples. Among 14 PAHs analysed, naphthalene most abundant followed by phenanthrene flu...

Sediment quality guidelines and toxic equivalent factors have been used for assessment of the toxicity of sedimentary long-range atmospherically transported polycyclic aromatic hydrocarbons (PAHs) to the organisms living in high mountain European lakes. This method has provided indices that are consistent with experimental studies evaluating in situ sedimentary estrogenic activity or physiologi...

The carcinogenicity of 1,11-dimethylchrysene (=5,7dimethylchrysene) and its 1,2,3,4-tetrahydro-, 3,4-dihydro-, and 1,2,3,4-tetrahydro-l-oxo derivatives was tested by mouse skin painting. Each mouse received 30 ¿/gof the chrysene on the dorsal skin twice weekly for one year, and the animals were observed for a second year. The 1-ketone was much more active than any of the hydrocarbons. Of the l...

This study focuses on the isolation and biodegradation of PAHs by microorganisms associated with the sediments of automobile workshops of Pondicherry. One of the bacterial isolate selectively enriched in these compounds was identified as Rhodococcus ruber based on morphology, 16S rDNA sequencing and phylogenetic characteristics. Biodegradability tests with selected PAHs supplied as sole carbon ...

K-region epoxides of benz[a] anthracene, dibenz[a,h] anthracene, and 3-methylcholanthrene have been found to be toxic and more active in producing malignant transformation of cells derived from mouse prostate than their respective parent hydrocarbons and K-region dihydrodiols and phenols. The data support the view that metabolism of these polycyclic hydrocarbons is a prerequisite for their biol...

Distribution and seasonal variation of sixteen priority polycyclic aromatic hydrocarbons (PAHs) were investigated in the drinking water of Tehran, the capital of Iran. Detected single and total PAHs concentrations were in the range of 2.01-38.96 and 32.45-733.10 ng/L, respectively, which were quite high compared to the values recorded in other areas of the world. The average occurrence of PAHs ...

mRNA extraction from soil and quantitation by competitive reverse transcription-PCR were combined to study the expression of three manganese peroxidase (MnP) genes during removal of polycyclic aromatic hydrocarbons from cultures of Phanerochaete chrysosporium grown in presterilized soil. Periods of high mnp transcript levels and extractable MnP enzyme activity were temporally correlated, althou...