Determination of metal complexes of ethylenediaminetetraacetate in the presence of organic matter by high-performance liquid chromatography

被引：33

作者：

Bedsworth, WW ^{[1
]}

Sedlak, DL ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA

来源：

JOURNAL OF CHROMATOGRAPHY A | 2001年 / 905卷 / 1-2期

关键词：

water analysis; environmental analysis; detection; LC; metal complexes; ethylenetetraaccetate;

D O I：

10.1016/S0021-9673(00)00964-X

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A high-performance liquid chromatography method is described here for the determination of the Cd(II), Co(II), Cu(II), Pb(II), and Zn(II) complexes of ethylenediaminetetraacetate (EDTA) in municipal wastewaters and surface waters. The method involves separation by ion-exchange chromatography on a reversed-phase C-18 column coated with ion-pair reagent, followed by post-column conversion to FeEDTA(-) and subsequent detection by UV absorbance. Although Co(II) and Cu(II) coelute, they can be quantified by analyzing absorbance by CuEDTA(2-) prior to post-column conversion. The method detection limit of 6-8X10(-8) M (5-7 ng) is an order of magnitude improvement over previous UV absorbance post-column reaction methods. The technique can be used in the presence of organic matter encountered in matrices such as untreated wastewater without pre-concentration or sample cleanup. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：157 / 162

页数：6

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