Test determination of Cu(II), Ni(II), and Cr(VI) in a single sample

被引：14

作者：

Dedkova, VP ^{[1
]}

Shvoeva, OP ^{[1
]}

Savvin, SB ^{[1
]}

机构：

[1] Russian Acad Sci, Vernadsky Inst Geochem & Analyt Chem, Moscow 117975, Russia

来源：

JOURNAL OF ANALYTICAL CHEMISTRY | 2001年 / 56卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

Copper; Nickel; Chromium; Cation Exchanger; Anion Exchanger;

D O I：

10.1023/A:1016745929604

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

It was shown that Cr(VI), Ni(II), and Cu(II) can be simultaneously adsorbed on a solid phase consisting of two filled fibrous disks and then determined visually using organic reagents. One sorbent disk, a fibrous material filled with an AB-17 anion exchanger, was used to determine chromium by its reaction with 1,5-diphenylcarbazide. Another disk filled with an KU-2 cation exchanger was used for the simultaneous sorption of copper and nickel followed by the consecutive determination of nickel with dimethylglyoxime and copper with sodium didethyldithiocarbamate. The conditions were optimized for the determination or nickel in the presence of copper and of copper in the presence of nickel after decomposing its dimethylglyoxime complex with 1 M HCl. The detection limits were 0.02, 0.1, and 0.05 mg/L for Cr, Ni, and Cu, respectively. The time of analysis was no longer that 20 min.

引用

页码：758 / 762

页数：5