Determination of inorganic anions by flow injection analysis and high-performance liquid chromatography combined with photolytic-electrochemical detection.
Post-column, on-line photolytic derivatization in liquid chromatography with electrochemical detection for some inorganic anions is described. Flow injection analysis and ion-pair reversed-phase chromatography followed by photolysis and electrochemical detection were used for the determinations of anions. Several operation conditions, such as mobile phase, lamp used for the photolysis, flow-rate, and applied potential, have been optimized for the determinations. Analytical figures of merit were determined. Method validation was carried out by the analysis of single blind, spiked samples. Inherent from the advantages of electrochemical detection in liquid chromatography, the method is of high sensitivity and selectivity for anion analysis.
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Department of Chemistry, Barnett Institute, Northeastern University, Boston, MA 02115.
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D000838:Anions / Q000032:analysis*; D002840:Chromates / Q000032:analysis; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D004553:Electric Conductivity; D004563:Electrochemistry / Q000379:methods; D005434:Flow Cytometry; D010472:Perchlorates / Q000032:analysis; D010504:Periodic Acid / Q000032:analysis; D010777:Photochemistry / Q000379:methods*; D013861:Thiocyanates / Q000032:analysis
D000838:Anions; D002840:Chromates; D010472:Perchlorates; D013861:Thiocyanates; D010504:Periodic Acid