DETERMINATION AND SPECIATION OF ALUMINUM IN ENVIRONMENTAL SAMPLES BY CATION EXCHANGE HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY WITH HIGH RESOLUTION ICP-MS DETECTION

摘要

A cation-exchange high-performance liquid chromatography with high resolution inductively coupled plasma mass spectrometric detection (CE-HPLC/ICP-MS) was developed for the determination and the speciation of aluminum in environmental samples. Three types of aluminum species (AlL_x~(<+2), AlL_x~(2+), A1~(3+)) were separated from one another, and were determined with the present system. The comparison of the present system with an established CE-HPLC with fluorimetric detection using 5-sulfo-8-quinolinol (CE-HPLC/FL) was described. The present system showed better sensitivity for aluminum than CE-HPLC/FL. Moreover, the analytical results for soil extract and lake water samples obtained with both methods were in good agreement with each other.