“…Water environments are easily contaminated by OCPs (Zhang et al, 2013). It was reported that OCPs were widely distributed in freshwater bodies, including ponds, rivers, lakes, reservoirs and estuaries (e.g., Dua et al, 1996;Janiot et al, 1994;Maskaoui et al, 2005;Tao et al, 2007;Zhou et al, 2008;Yamashita et al, 2000;Xu et al, 2013).…”