Automated flow injection method for cadmium determination with pre-concentration and on-line reagent preparation.

被引：12

作者：

Di Nezio, MS ^{[1
]}

Palomeque, ME ^{[1
]}

Band, BSF ^{[1
]}

机构：

[1] Univ Nacl Sur, FIA Lab, Dept Chem, RA-8000 Bahia Blanca, Argentina

来源：

QUIMICA NOVA | 2005年 / 28卷 / 01期

关键词：

Cd (II); preconcentration; FIA;

D O I：

10.1590/S0100-40422005000100025

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

AUTOMATED FLOW INJECTION METHOD FOR CADMIUM DETERMINATION WITH PRE-CONCENTRATION AND ONLINE REAGENT PREPARATION. The spectrophotometric determination of Cd(II) using a flow injection system provided with a solid-phase reactor for cadmium preconcentration and on-line reagent preparation, is described. It is based on the formation of a dithizone-Cd complex in basic medium. The calibration curve is linear between 6 and 300 pg L-1 Cd(II), with a detection limit of 5.4 mug L-1, an RSD of 3.7% (10 replicates in duplicate) and a sample frequency of 11.4 h(-1). The proposed method was satisfactorily applied to the determination of Cd(II) in surface, well and drinking waters.

引用

页码：145 / 148

页数：4

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