Distribution, sources, and ecological risk assessment of HCHs and DDTs in water from a typical coal mining subsidence area in Huainan, China. - Chen, Xiaoqing; Gao, Liangmin; Hu, Youbiao; Luan, Leilei; Tong, Rongrong; Zhang, Jinxin; Wang, Hui; Zhou, Xiaofang (Environmental Science & Pollution Research, 2022)