Study on solid phase extraction spectrophotometric determination of zinc with 2-(2-quinolylazo)-5-dimthylaminophenol

被引：0

作者：

Zhou, SP

Duan, CQ ^{[1
]}

Liu, HC

Hu, QF

机构：

[1] Yunnan Univ, Lab Conservat & Utilizat Bioresource, Kunming 650091, Peoples R China

[2] Yunnan Univ, Sch Life Sci, Kunming 650091, Peoples R China

[3] SW Forestry Coll, Dept Basic Courses, Kunming 650224, Peoples R China

[4] Supervis & Testing Ctr Farm Prod Qual, Minist Agr, Kunming 650000, Peoples R China

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2005年 / 25卷 / 10期

关键词：

2-(2-quinolylazo)-5-dimthylaminophenol; zinc(II); spectrophotometry; solid phase extraction;

D O I：

暂无

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A highly sensitive, selective and rapid method for the determination of zinc based on the rapid reaction of zinc( II ) with 2-(2-quinolylazo)-5-dimthylaminophenol (QADMAP) and the solid phase extraction of zinc ion with anion exchange resin cartridge was developed. In the presence of pH 8.5 buffer solution and Triton X-100 medium, QADMAP can react with zinc( II ) to form a stable 2 : 1 complex (QADMAP: Zn( II )). The molar absorptivity is 1.22 X 10(5) L(.)moL(-1.)cm(-1) at 590 nm. Beer's law is obeyed in the range of 0-1.0 mu g(.)mL(-1). The zinc ions in the samples can be enriched and separated by solid phase extraction with anion exchange resin cartridge. Testing results show that recovery for zinc( II ) was from 95% to 104%, and RSD was below 3%. This method was applied to the determination of zinc in water and food with good results.

引用

页码：1667 / 1670

页数：4

共 8 条

[1]

Leng HX, 2004, SPECTROSC SPECT ANAL, V24, P625

[2] Determination of transition metal ions in tobacco as their 2-(2-quinolinylazo)-5-dimethylaminophenol derivatives using reversed-phase liquid chromatography with UV-VIS detection [J].