[1] Hebei Med Univ, Sch Pharmaceut Sci, Hebei Key Lab Forens Med, Shijiazhuang 050017, Hebei Province, Peoples R China
[2] Hebei Prov Inst Food & Drug Control, Shijiazhuang 050011, Hebei Province, Peoples R China
[3] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
[4] Syngenta Jealotts Hill Int Res Ctr, Bracknell RG42 6EY, Berks, England