Pre-concentration and determination of trace elements in natural waters by inductively coupled plasma-atomic emission spectrometry

摘要

A method has been developed for the determination of Cd(II), Cu(II), Mn(II), Ni(II), Pb(II) and Zn(II) in natural waters by inductively coupled plasma-atomic emission spectrometry after pre-concentration by solvent extraction with piperidine dithiocarbamate (pipDTC). The metals are complexes with pipDTC and the complexes extracted into isobutyl methyl ketone and subsequently back-extracted into nitric acid.Metals in nitric acid have been determined by aspirating into argon plasma of ICP-AES. The method has been applied for the determination of the tested metal ions in natural waters.