Clinical Chemistry
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Clinical Chemistry 41: 557-563, 1995;
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Clinical Chemistry, Vol 41, 557-563, Copyright © 1995 by American Association for Clinical Chemistry

Electrochemical determination of low blood lead concentrations with a disposable carbon microarray electrode

BJ Feldman, A D'Alessandro, JD Osterloh and BH Hata
University of California/San Francisco, UCSF/SFGH Metals Laboratory, San Francisco General Hospital 94110, USA.

Lead concentrations in blood samples typical of unexposed individuals are determined by using square-wave anodic stripping voltammetry at a disposable 287-element (15-35-microns diameter) carbon microarray electrode. Analysis of a series of low Pb-containing samples (blood [Pb] = 17 to 92 micrograms/L) by standard addition gives good accuracy (average bias vs graphite furnace atomic absorption spectroscopy = -4 micrograms/L) and precision (pooled SD = 7 micrograms/L). The signal/noise ratio is improved by about an order of magnitude over that found at a single carbon disk (10 microns diameter), resulting in a detection limit (for the microarray) of 5 micrograms/L for a 60-s deposition of sample.


The following articles in journals at HighWire Press have cited this article:


Home page
 Clin. Chem.Home page
E. Plotkin, J. F. McAleer, M. L. Cordeiro, M. R. Ackland, T. M. Sheehan, and R. A. Braithwaite
Convenient, Rapid Test for Lead in Blood with Use of Disposable Electrodes
Clin. Chem., November 1, 1997; 43(11): 2187 - 2189.
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