誘導結合プラズマ-質量分析法による水道水・湧水中の15種微量元素・金属の一斉分析

概要

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The concentrations of fifteen trace elements and minerals (B, Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Mo, Cd, Sb, Pb and U) in drinking water and spring water samples were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS). In the drinking water sample, the concentrations of 15 elements and minerals were detected at low levels and were all below the set drinking water-quality standards. In the spring water sample, 13 elements and minerals were detectable except for Mo and Cd. These data were compared with the environmental water-quality standards. Fourteen elements and minerals except for Sb appeared lower than the standard concentrations. The B, Se and Sb concentrations in the spring water sample were about 5, 8 and 12 times higher than the data from the drinking water sample, respectively. Consequently, the drinking water sample seems to be safe with regards to the 15 elements and minerals, but in the spring water sample environmental pollution may have occurred due to high levels of Sb.