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ELECTROCATALYTIC AMPEROMETRIC DETECTION OF HYDROXYLAMINE WITH A PALLADIUM-MODIFIED CARBON-PASTE ELECTRODE

被引：26
作者：
CAI, XH
KALCHER, K
LINTSCHINGER, J
NEUHOLD, CG
TYKARSKI, J
OGOREVC, B
机构：
[1] HAINAN UNIV,COLL SCI & TECHNOL,HAIKOU 570028,PEOPLES R CHINA
[2] GRAZ UNIV,INST ANALYT CHEM,A-8010 GRAZ,AUSTRIA
[3] UNIV WARSAW,DEPT CHEM,PL-02093 WARSAW,POLAND
[4] NATL INST CHEM,ANALYT LAB,LJUBLJANA 61115,SLOVENIA
来源：
ELECTROANALYSIS | 1995年 / 7卷 / 06期
关键词：
HYDROXYLAMINE; PALLADIUM; ELECTROCATALYSIS; CARBON PASTE;
D O I：
10.1002/elan.1140070609
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Carbon paste electrodes (CPEs), modified by addition of Pd powder to the paste and electroactivation, exhibited electrocatalytic activity towards hydroxylamine. Electrogenerated palladium(0) at the electrode surface was found to be involved in the electrocatalytic oxidation of NH2OH. The electrode was employed as an amperometric detector for flow injection systems. Repeated injections (60) of hydroxylamine (5 ng) showed a relative standard deviation of 4.0%. Linear relation between the current and the analyte concentration was found between 0.1 and 10 ng of hydroxylamine. The detection limit was 20 pg NH2OH (3 sigma). The applicability of the method to the determination of hydroxylamine in river water was investigated.
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页码：556 / 559
页数：4
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