Synthesis of novel chitosan resin derivatized with serine diacetic acid moiety and its application to on-line collection/concentration of trace elements and their determination using inductively coupled plasma-atomic emission spectrometry

被引:45
作者
Hakim, Lukman [1 ]
Sabarudin, Akhmad [1 ]
Oshima, Mitsuko [1 ]
Motomizu, Shoji [1 ]
机构
[1] Okayama Univ, Fac Sci, Dept Chem, Okayama 7008530, Japan
基金
日本学术振兴会;
关键词
chelating resin; chitosan; serine diacetic acid moiety; trace elements; on-line pretreatment; computer control; inductively coupled plasma-atomic emission spectrometry; SLRS-4;
D O I
10.1016/j.aca.2007.01.066
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A novel chelating resin functionalized with serine diacetic acid moiety was synthesized by using chitosan as base material, and applied to the collection/concentration of trace elements in environmental water samples, followed by the determination using inductively coupled plasma-atomic emission spectrometer (ICP-AES). The synthesized resin, crosslinked chitosan serine diacetic acid (CCTS-SDA), showed good adsorption behavior toward trace amounts of Cd, Pb, Cu, Ni, V, Ga, Sc, In, and Th in a wide pH range. Additionally, rare earth elements also can be retained on the resin at neutral pH region. The adsorbed elements can be easily eluted with 1 mol L-1 of nitric acid, and their recoveries were found to be 90-100%. The CCTS-SDA was packed in a mini-column, which was then installed in a cornputer-controlled auto-pretreatment system (Auto-Pret System) for on-line trace elements collection and determination with ICP-AES. Experimental parameters which related to the improvement of sensitivity and reproducibility were optimized. The limits of detection (LOD) for 13 elements were found to be in sub-ppb level. The proposed method with CCTS-SDA resin was successfully applied to the determination of trace elements in river water samples. The method was validated by determining a certified reference material of river water, SLRS-4. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:73 / 81
页数:9
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