Determination of selenium in the commercially bottled drinking water by ICP-MS - Determination of trace elements in environmental samples by ICP-MS .4.

Concentrations of Se in the commercially bottled water were determined by ICP-MS with linear calibration. Analytical mass of Se was 77. Average concentration of Se in the bottled water samples was 0.25 ng/ml, and Se concentration in 60% of determined samples were under 0.2 ng/ml. There was no significant difference of average Se concentration among the mineral water samples (10 samples), the natural water samples (21 samples) and the natural mineral water samples (21 samples). The mineral water of No. 51 contained 3.12 ng/ml of Se (the maximum), and the natural water sample of No. 16 and the natural mineral water sample of No. 26 contained 0.03 ng/ml of Se (the minimum). The Se concentration in the commercially bottled water was under 0.01 mg/l which was the standard value of the water quality criteria of supplied water in Japan.