ANALYSIS OF INORGANIC ANIONS BY CAPILLARY-ZONE-ELECTROPHORESIS

Determination of inorganic anions by capillary zone electrophoresis is reported in this study. An anions mixture of bromide, chloride, fluor ide. nitrite, sulfite. sulfate, perchlorate, chlorate and chlorite was separated by a capillary column and detected by indirect UV method. T he running buffer contained 5mM ammonium dichromate. 10mM ammonium ace tate, 20mM diethylenetriamine, and in 10% methanol solution. at pH 9.3 . A potential of 15kV at the cathode(reversed polarity) was utilized f or the separation of inorganic anions. A complete separation of anions was achieved in less than 10 min and the applicabilities of the metho d were demonstrated for forensic evidences. We performed analysis of i norganic anions in toluene inhaled human's urine and in postmortem blo ods by capillary zone electrophoresis and ion chromatography.