Abstract
The occurrence of organotins in the Yangtze River and the Jialing River in the urban section of Chongqing, China and their impact on drinking water waterworks are reported in this study. Water samples were extracted by solid-phase microextraction and measured using a gas chromatograph with mass spectrometer. The results showed that the rivers studied were polluted by both butyltins and phenyltins and that the butyltin species was the dominant pollutant. Butyltins, especially monobutyltin, were detected in all 18 sampling stations, and phenyltins were detected only in 11 sampling stations. Majority of the organotins were MBTs with concentrations varying from 27.3 to 1,145.8 ng Sn L−1. Diphenyltin and dibutyltin were the second most common with the highest levels of 113.7 and 202.5 ng Sn L−1, respectively. Monophenyltin, tributyltin, and triphenyltin had the lowest detection rates with concentration levels of 9.7, 161.8, and 37.2 ng Sn L−1, respectively. Some of the organotins were also detected in drinking water waterworks, which posed a threat to the water quality of Chongqing.
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Acknowledgments
This study was supported by the National Natural Science Foundation of China (21107147), the Fundamental Research Funds for the Central Universities of China (CDJZR10210010), and the Natural Science Foundation Project of CQ CSTC (2009BB7351). We thank the Chongqing Water Service Group for their sampling cooperation.
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Gao, JM., Zhang, Y., Guo, JS. et al. Occurrence of organotins in the Yangtze River and the Jialing River in the urban section of Chongqing, China. Environ Monit Assess 185, 3831–3837 (2013). https://doi.org/10.1007/s10661-012-2832-5
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DOI: https://doi.org/10.1007/s10661-012-2832-5