Flow injection in-valve-mini-column pretreatment combined with ion chromatography for cadmium, lead and zinc determination

Sumalee Tanikkul; Jaroon Jakmunee; Somchai Lapanantnoppakhun; Mongkon Rayanakorn; Ponlayuth Sooksamiti; Robert E Synovec; Gary D Christian; Kate Grudpan

doi:10.1016/j.talanta.2004.05.060

Flow injection in-valve-mini-column pretreatment combined with ion chromatography for cadmium, lead and zinc determination

Talanta. 2004 Dec 15;64(5):1241-6. doi: 10.1016/j.talanta.2004.05.060.

Authors

Sumalee Tanikkul¹, Jaroon Jakmunee, Somchai Lapanantnoppakhun, Mongkon Rayanakorn, Ponlayuth Sooksamiti, Robert E Synovec, Gary D Christian, Kate Grudpan

Affiliation

¹ Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.

PMID: 18969736
DOI: 10.1016/j.talanta.2004.05.060

Abstract

A flow injection (FI) in-valve-mini-column packed with Chelex-100 resin is proposed for on-line sample pretreatment for some metal ions, namely, Cd(II), Pb(II) and Zn(II), prior to simultaneous determination using ion chromatography (IC). A solution containing a mixture of the cations was first passed through the in-valve-mini-column, followed by on-line elution. The eluate was then flowed further to an injection valve and was injected into an ion chromatograph. Conditions of the system were optimized. A single standard calibration was possible. The recoveries of cations were found to be in the range of 95-105%. The developed method was applied to the accurate analysis of zinc ore samples.