[Diao, Qiaoqiao; Bu, Zhijian; Tian, Qingzhen; Liu, Jinjin; Tang, Zheng; Liu, Huiqing; Niu, Xiangheng; Li, Shu; Chen, Xinyu] Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hengyang 421001, Peoples R China.
[Niu, Xiangheng] Hunan Ecol & Environm Monitoring Ctr, State Environm Protect Key Lab Monitoring Heavy Me, Changsha 410019, Peoples R China.
[Niu, Xiangheng] Qingdao Univ Sci & Technol, Shandong Key Lab Biochem Anal, Qingdao 266042, Peoples R China.
[Niu, Xiangheng] Minjiang Univ, Fujian Key Lab Funct Marine Sensing Mat, Fuzhou 350108, Peoples R China.