An htSPE microchip–ICP-MS system was developed for trace metal analysis.
An htSPE microchip consisted of a micromixer and a multi-channeled extraction unit.
Detection limits of 1.64–42.54 ng L−1 for the metal ions were achieved.
Each analysis could be readily accomplished within just 186 s.
This method was successfully used for the analysis of metal ions in natural water.