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AN-S-298

Arsenate in high-chloride and high-sulfate matrix by sample reinjection technique


Summary

The anion column Metrosep A Supp 15 - 150/4.0 is a pretty high-capacity column. The direct determination of arsenate in a matrix of 180 mg/L chloride and 320 mg/L sulfate is not possible, as the arsenate is hardly detectable under the sulfate peak tail. Sample reinjection cuts off the majority of the matrix and therefore allows an accurate determination of the arsenate.

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Metrohm AG

Ionenstrasse
9100 Herisau

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