PRECONCENTRATION AND ATOMIC-ABSORPTION DETERMINATION OF COPPER TRACES IN WATERS BY ONLINE ADSORPTION-ELUTION ON AN ACTIVATED CARBON MINICOLUMN

被引：87

作者：

SANTELLI, RE ^{[1
]}

GALLEGO, M ^{[1
]}

VALCARCEL, M ^{[1
]}

机构：

[1] UNIV CORDOBA,FAC SCI,DEPT ANALYT CHEM,E-14004 CORDOBA,SPAIN

来源：

TALANTA | 1994年 / 41卷 / 05期

关键词：

D O I：

10.1016/0039-9140(94)80055-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A continuous preconcentration method for the determination of trace copper in waters was developed. Ammonium pyrrolidinedithiocarbamate is used to form a chelate which is adsorbed on an activated carbon minicolumn and desorbed with 200 mul of methyl isobutyl ketone. The organic extract is driven by a water stream to an atomic absorption spectrometer. By using a time-based technique equivalent to from 1.5 to 4.5 ml of sample, preconcentration factors between 35 and 100, respectively, are achieved. The flow system is quite simple and rapid, and provides highly precise results (RSD 1.8-3.5%). The results obtained in the determination of copper in waters show the usefulness of the proposed method.

引用

页码：817 / 823

页数：7

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