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- W2356109239 abstract "Illicit drugs and their metabolites have recently been recognized as an emerging group of contaminants due to their potential ecotoxicological impact in aquatic ecosystems. To date, information on the occurrence of these compounds in the aquatic environment of China remains limited. In this study, we collected surface water samples from 36 rivers in north China that discharge into the Bohai Sea and north Yellow Sea and measured the concentrations of amphetamine-like compounds, ketamines, cocainics, and opioids. The occurrence and spatial patterns of these substances show significant differences between the rivers and regions. Two designer drugs, methamphetamine (METH) and ketamine (KET), were the most abundant compounds detected in the entire set of samples (detection frequency of 92 and 69 %). The concentrations of METH and KET ranged from <0.1 to 42.0 ng L−1 (mean = 4.53 ng L−1) and <0.05 to 4.50 ng L−1 (mean = 0.49 ng L−1), respectively. The high detection frequencies of METH and KET are consistent with the fact that they are the main illicit drugs consumed in China. The high concentrations of these illicit drugs and their metabolites were found in areas that have a high population density. The riverine input of total illicit drugs into the Bohai Sea and north Yellow Sea was estimated to be in the range of 684 to 1160 kg per year." @default.
- W2356109239 created "2016-06-24" @default.
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- W2356109239 date "2016-05-11" @default.
- W2356109239 modified "2023-09-26" @default.
- W2356109239 title "Illicit drugs and their metabolites in 36 rivers that drain into the Bohai Sea and north Yellow Sea, north China" @default.
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- W2356109239 doi "https://doi.org/10.1007/s11356-016-6824-9" @default.
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