TAR柱前络合、毛细管电泳分析痕量金属离子(英文)  

CAPILLARY ELECTROPHORESIS FOR THE ANALYSIS OF TRACE METAL IONS USING PRE-COLUMN COMPLEXING WITH 4-(2-THIAZOLYLAZO)RESORCINOL

作　　者：王敏[1] 屈锋[1] 林金明[1] 

机构地区：[1]中国科学院生态环境研究中心,北京100085

出　　处：《环境化学》2003年第3期236-240,共5页Environmental Chemistry

基　　金：SupportedbyNSFC (No. 2 0 1 2 5 5 1 4andNo . 2 0 2 75 0 43 )

摘　　要：The capillary electrophoretic separation of Fe 2+ , Co 2+ , Zn 2+ and Ni 2+ in a phosphate buffer solution by complexing with 4 (2 thiazolylazo)resorcinol was investigated. The influences of some crucial parameters that included chelating ligand in the electrophoretic running buffer and sample solution, pH value and concentration of buffer were examined. Under optimum conditions (10mmol·l -1 NaH 2PO 4 Na 2HPO 4 buffer containing 1×10 -4 mol·l -1 TAR, pH 7 5), a baseline separation of these metals was accomplished within 3 min. The detection limits (S/N=3) ranged from 0 013—0 14 μg·ml -1 . The method was applied to analyze trace metal ions in the environmental samples.The capillary electrophoretic separation of Fe 2+ , Co 2+ , Zn 2+ and Ni 2+ in a phosphate buffer solution by complexing with 4 (2 thiazolylazo)resorcinol was investigated. The influences of some crucial parameters that included chelating ligand in the electrophoretic running buffer and sample solution, pH value and concentration of buffer were examined. Under optimum conditions (10mmol·l -1 NaH 2PO 4 Na 2HPO 4 buffer containing 1×10 -4 mol·l -1 TAR, pH 7 5), a baseline separation of these metals was accomplished within 3 min. The detection limits (S/N=3) ranged from 0 013—0 14 μg·ml -1 . The method was applied to analyze trace metal ions in the environmental samples.

关 键 词：TAR柱 柱前络合 毛细管电泳分析 痕量分析 金属离子 

分 类 号：O658.9[理学—分析化学]