Bacterial transformation of pyrene in a marine environment
Article Abstract:
In situ bacterial transformation of pyrene exists in the estuary environment of Kitimat Arm, British Columbia, Canada. The presence of in situ bacterial transformation of pyrene in the environment is supported by the detection of cis-4,5-dihydroxy-4,5-dihydropyrene, a key metabolite of dioxygenase-mediated transformation of pyrene, together with earlier pyrene degradation studies using cultures isolated from the same sediment samples. Bacterial transformation of pyrene was investigated by separating a metabolite from marine sediment and pore water samples. It was identified using liquid chromatography and capillary gas chromatography with mass spectrometry detection.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Polar forms of benzo[a]pyrene may be ubiquitous in the environment
Article Abstract:
A validation study to trace the source of an unwanted peak in the gas chromatography electron capture mass spectrometry of polar polycyclic aromatic compounds (PAC) extracted with KO2/O2 showed the unwanted peak to be the ubiquitous presence of polar PACs in the environment. Numerous testing to isolate the source of the unwanted peak failed to isolate the source leading the researchers to conclude that the contaminant PAC is so pervasive in the urban environment as to be difficult to isolate.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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Sorption of benzo(a)pyrene and phenanthrene on suspended harbor sediment as a function of suspended sediment concentration and salinity: a laboratory study using the cosolvent partition coefficient
Article Abstract:
The effects of sediment concentration and salinity on the sorption of the hydrophobic compounds benzo(a)pyrene (BaP) and phenanthrene (PHE) on suspended harbor sediment were examined using the cosolvent partition coefficient (Kp) to estimate BaP and PHE sorption behavior. The results showed that Kp for BaP was constant at different suspended sediment concentrations. Kp for BaP and PHE increased slightly when salinity was increased from freshwater level to seawater level.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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