Document Detail

Sonoelectroanalytical detection of lead at a bare copper electrode.
MedLine Citation:
PMID:  11227513     Owner:  NLM     Status:  MEDLINE    
The sonochemically facilitated, mercury free detection of Pb2+ at a copper electrode has been investigated as a means of simplifying the quantification of this important analyte and to minimise the interference of copper ion. The procedure relies upon maximising the formation of Pb-Cu intermetallic compounds leading to the emergence of a single, easily quantifiable stripping signal. Linear responses to Pb2+ were obtained with a sensitivity comparable to that obtained at a bare glassy carbon electrode. Interference from Cu2+, Zn2+ and Cd2+ was assessed on the copper electrode with no appreciable change in the Pb2+ voltammetric profile observed. In contrast, bare glassy carbon showed a significant change in Pb2+ voltammetric profile as Cu2+ was added, due to the formation of intermetallic species.
D F Tibbetts; J Davis; R G Compton
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Fresenius' journal of analytical chemistry     Volume:  368     ISSN:  0937-0633     ISO Abbreviation:  Fresenius J Anal Chem     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2001-02-28     Completed Date:  2001-03-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9114077     Medline TA:  Fresenius J Anal Chem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  412-4     Citation Subset:  IM    
Physical and Theoretical Chemistry Laboratory, University of Oxford, UK.
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MeSH Terms
Copper / adverse effects,  chemistry
Electrodes / standards
Lead / analysis*
Potentiometry / methods,  standards
Reproducibility of Results
Sensitivity and Specificity
Reg. No./Substance:
7439-92-1/Lead; 7440-50-8/Copper

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