Biotransformation of caffeine, cotinine, and nicotine in stream sediments: implications for use as wastewater indicators.
作者： Paul M. Bradley , Larry B. Barber , Dana W. Kolpin , Peter B. McMahon , Francis H. Chapelle
DOI: 10.1897/06-483R.1
关键词:
摘要: Microbially catalyzed cleavage of the imadazole ring caffeine was observed in stream sediments collected upstream and downstream municipal wastewater treatment plants (WWTP) three geographically separate systems. Microbial demethylation N-methyl component cotinine its metabolic precursor, nicotine, also these sediments. These findings indicate that sediment microorganisms are able to substantially alter chemical structure thus analytical signatures candidate waste indicator compounds. The potential for situ biotransformation must be considered if compounds employed as markers identify sources track fate surface-water
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