Premium
A study of differential potentiometric stripping analysis for lead and cadmium with Nafion coated carbon fibre electrode
Author(s) -
Dong ShaoJun,
He Jun,
Wang YuDong
Publication year - 1990
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19900080604
Subject(s) - chemistry , nafion , stripping (fiber) , cadmium , potentiometric titration , electrode , anodic stripping voltammetry , perchlorate , sodium perchlorate , oxidizing agent , inorganic chemistry , ion selective electrode , electrochemistry , selectivity , ion , organic chemistry , catalysis , electrical engineering , engineering
The differential potentiometric stripping analysis (DPSA) with Nafion coated carbon fibre electrode has been studied, and a method to determine lead and cadmium in urine directly has been attempted. The effect of various experimental parameters on the DPSA response is discussed. The experimental conditions include 0.2M sodium perchlorate, deposition potential of −1.0 or −1.1 V and using 20 ppm mercuric ion as oxidizing agent. The response of the signal is in linear relation with the concentrations of lead and cadmium respectively up to 0.5 ppm. The electrode coated with Nafion film alleviates the interference from organics in urine samples.