DETERMINATION OF TRACE ELEMENTS BY INDUCTIVELY COUPLED PLASMA-ATOMIC EMISSION SPECTROMETRY (ICP-AES) AFTER PRECONCENTRATION ON A SUPPORT IMPREGNATED WITH PIPERIDINE DITHIOCARBAMATE

Abstract

A procedure is developed for the determination of Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn in water by inductively coupled plasma-atomic emission spectrometry (ICP-AES) after preconcentration on a piperidine dithiocarbamate supported polyurethane foam. The sorbed elements are subsequently eluted with 4 mol L⁻¹ HNO₃, and the acid eluates are analysed by ICP-AES. A 20-mL disposable syringe served as a chromatographic preconcentration column. The sorption recoveries of elements except Co and Cr were higher than 97%. The method is also applied for the analysis of natural water samples.

Keywords:

• Trace elements
• Preconcentration
• Piperidine dithiocarbamate
• Inductively coupled plasma atomic emission spectrometry
• Water

ACKNOWLEDGMENT

The authors are thankful to M/s Amara Raja Batteries Limited, Karakambadi, Tirupati, for providing ICP-AES facilities.