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壳聚糖修饰玻碳电极卷积伏安法测定环境水中的EDTA

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Indexed by:期刊论文

Date of Publication:2003-05-28

Journal:分析试验室

Included Journals:PKU、ISTIC、CSCD

Volume:22

Issue:3

Page Number:38-40

ISSN No.:1000-0720

Key Words:修饰电极;壳聚糖;卷积伏安法;EDTA

Abstract:制备了壳聚糖修饰玻碳电极,研究了Fe(EDTA)-在修饰电极上的吸附还原行为,用卷积伏安法通过Fe(EDTA)-的检测测定了环境水中的EDTA.在优化的实验条件下,峰电流值与8.0×10-7~ 5.0×10-6 mol/L的EDTA呈线性关系,回归方程为epp′= 0.7525c- 0.6613, r=0.991,最低检出限为5.0×10-7 mol/L,5次测定的相对标准偏差小于5.8%.对实际样品测定的回收率为98.1%~105%,对比HPLC的结果,相对偏差小于5%.

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