[1] Sichuan Univ, Analyt & Testing Ctr, Chengdu 610064, Sichuan, Peoples R China
[2] Univ Alberta, Dept Lab Med & Pathol, Div Analyt & Environm Toxicol, Fac Med & Dent, Edmonton, AB T6G 2G3, Canada
[3] Univ Alberta, Dept Chem, Fac Sci, Edmonton, AB T6G 2G2, Canada
[4] Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China