Determination of arsenic and selenium species in drinking water applying IC-ICP/MS

contributed by Metrohm | 11/14/2016

Inorganic arsenic and selenium species should not be present in drinking water above the maximum contaminant level (MCL) of 10 and 50 ppb, respectively. As each element occurs in two oxidation states, a separation step is required before ICP/MS detection. This Application Note shows the simultaneous determination of As(III) (arsenite), As(V) (arsenate), Se(IV) (selenite), and Se(VI) (selenate). The separation is performed on a Metrosep Dual 3 - 100/4.0 column.

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