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Spatiotemporal distribution and risk assessment of organophosphate esters in sediment from Taihu Lake, China

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Abstract

The occurrence and spatiotemporal distribution of 12 organophosphate esters (OPEs) were investigated in the sediments collected from Taihu Lake. Compared to the same lake in 2012 (3.4–14 ng/g dw), the concentrations of ∑12 OPEs in sediments ranged from 10.76 to 335.37 ng/g dw and from 8.06 to 425.39 ng/g dw in 2015 and in 2016, respectively, indicating that the OPEs levels in Taihu Lake have aggravated, recently. TEHP was the most abundant compound of the OPEs, which suggested that TEHP was the most widely used around Taihu Lake recently. The positive correlations between some of individual OPEs and the principal components analysis suggested the same potential sources for them. The strong positive correlation between ∑BPs and TOC content indicated that TOC content was one of the factors affected the distribution of ∑OPEs in the sediment. Risk quotient (RQ) for OPEs showed no high eco-toxicity risk in sediment for aquatic organisms.

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Funding

This study was financially supported by the National Natural Science Foundation of China (21507036, 21507165, 21407055), the Projects of Natural Technology Cooperation and Exchanges (2015DFA91390), and the Central Public-interest Scientific Research Institution Basal Research Fund (GYZX170303).

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Correspondence to Shenghu Zhang or Jianqiu Chen.

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Responsible editor: Roland Peter Kallenborn

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Chen, M., Liu, Y., Guo, R. et al. Spatiotemporal distribution and risk assessment of organophosphate esters in sediment from Taihu Lake, China. Environ Sci Pollut Res 25, 13787–13795 (2018). https://doi.org/10.1007/s11356-018-1434-3

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  • DOI: https://doi.org/10.1007/s11356-018-1434-3

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