Ministry of Environmental Protection, Nanjing Institute of Environmental Sciences, Nanjing, 210042, China.
College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China.
Environ Sci Pollut Res Int. 2018 May;25(14):13787-13795. doi: 10.1007/s11356-018-1434-3. Epub 2018 Mar 5.
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.
本研究调查了太湖沉积物中 12 种有机磷酸酯（OPEs）的含量、分布特征及其来源。与 2012 年（3.4-14ng/g dw）相比，2015 年和 2016 年太湖沉积物中∑12 OPEs 的浓度范围分别为 10.76-335.37ng/g dw 和 8.06-425.39ng/g dw，表明近年来太湖中 OPEs 的污染水平有所加重。在 OPEs 中，TEHP 是最丰富的化合物，这表明 TEHP 是近年来太湖地区使用最广泛的 OPEs。一些个别 OPEs 与主成分分析之间的正相关关系表明它们具有相同的潜在来源。∑BPs 与 TOC 含量之间的强正相关关系表明 TOC 含量是影响∑OPEs 在沉积物中分布的因素之一。OPEs 的风险商（RQ）表明，沉积物中 OPEs 对水生生物没有高生态毒性风险。
