Functionalization of cross linked chitosan with 2-aminopyridine-3-carboxylic acid for solid phase extraction of cadmium and zinc ions and their determination by atomic absorption spectrometry

被引：20

作者：

Suneetha, Yerukala ^{[1
]}

Kumar, Bommana Naresh ^{[1
]}

Harinath, Yapati ^{[1
]}

Reddy, D. Harikishore Kumar ^{[1
]}

Seshaiah, Kalluru ^{[1
]}

机构：

[1] Sri Venkateswara Univ, Dept Chem, Analyt & Environm Chem Div, Tirupati 517502, Andhra Pradesh, India

来源：

MICROCHIMICA ACTA | 2012年 / 176卷 / 1-2期

关键词：

Solid phase extraction; Chitosan; 2-aminopyridine-3-carboxylic acid; Metal ions; AAS; AMBERLITE XAD-2; WATER SAMPLES; COLUMN COLLECTION/CONCENTRATION; ADSORPTION BEHAVIOR; POLYMER MATRIX; ICP-AES; PRECONCENTRATION; RESIN; MOIETY; SEPARATION;

D O I：

10.1007/s00604-011-0707-z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We have developed a new method for solid phase extraction (SPE) and preconcentration of trace amounts of cadmium and zinc using cross linked chitosan that was functionalized with 2-aminopyridine-3-carboxy acid. Analytical parameters, sample pH, effect of flow rate, sample volume, and concentration of eluent on column SPE were investigated. The effect of matrix ions on the recovery of cadmium and zinc has been investigated and were found not to interfere with preconcentration. Under the optimum experimental conditions, the preconcentration factors for Cd(II) and Zn(II) were found to be 90. The two elements were quantified via atomic absorption spectrometry. The detection limits for cadmium and zinc are 21 and 65 ng L-1, respectively. The method was evaluated by analyzing a certified reference material (NIST 1643e; water) and has been successfully applied to the analysis of cadmium and zinc in environmental water samples.

引用

页码：169 / 176

页数：8

共 30 条

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