Simultaneous ion chromatographic determination of selenium and metal ions in waters at trace level |
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Authors: | C Sarzanini O Abollino E Mentasti V Porta |
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Institution: | (1) Department of Analytical Chemistry, University of Torino, Via P. Giuria 5, I-10125 Torino, Italy |
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Abstract: | Summary An ion-chromatographic procedure is described for the determination of selenium (VI) at μg L−1 level in the presence of anions and heavy metal ions. Maximum permissible concentrations and effects from each interfering
substance were investigated for the Se concentration range 12.5–1,000 μg L−1. The method, optimized for the detection of SeO
4
2−
, gives results suitable for speciation analysis. Total selenium can be determined after complete conversion to selenate ion
by oxidation with KMnO4. The detection limit of selenium is 4.8 μg L−1 (0.96 ng for 200 μL sample).
Paper presented at the 41st Pittsburgh Conference, New York, March 5–9, 1990. |
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Keywords: | Ion Chromatography Selenium Heavy metal Ions Speciation |
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