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An ion chromatographic method for simultaneous determination of formate, hydroxyethyl sulfonate (HES), hydroxyethyl thiosulfate ( HET), and coexisting anions in the industrial waste liquid of sodium hydrosulfite production was developed. The mixture of 1 .6 mmol/l of phthalic acid and 1.2 mmol/l tri-(hydroxyethyl) aminomethane was used as eluent. The interference of coexisting sulfite anion with HES...
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