Abstract
Trace metals in commercially-available 18 mineral waters were determined by ICP-MS, where a chelating resin-packed minicolumn was applied to separate matrix elements as well as to preconcentrate trace metals in the samples. The 25-fold concentration for trace metals was obtained by preconcentrating 50 ml of mineral water to 2.0 ml of final analysis solution. At the same time, matrix elements were substantially eliminated, so that trace metals could be determined by ICP-MS on the multielement basis. The validation of the present analytical method was examined by determining trace metals in river water reference material (JAC 0032). In addition, trace metals in tap water from Nagoya city were determined by the present method, and their concentrations were compared to those in mineral water.
