✦ LIBER ✦

Stripping potentiometric measurements of copper in blood using gold microelectrodes

✍ Scribed by Joseph Wang; Emanuel Sucman; Baomin Tian

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 573 KB
Volume: 286
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(94)80159-2

No coin nor oath required. For personal study only.

✦ Synopsis

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A rapid, reliable, sensitive and simple stripping potentiometric method r the determination of copper in blood samples, based on a bare (mercury-free) gold fiber microelectrode is desc rL" ed. The method involved a 1: 40 dilution of the 50 ~1 whole blood sample with 0.8 M hydrochloric acid, a short (68 s) deposition at -0.40 V, and a constant stripping current of 0.5 PA. The analytical performance is not compfomised by replacing the traditional mercury electrodes with the gold microsenso~ detection limit is 1.5 pg/I (1 min deposition) and the relative standard deviation for 80 repetitive blood assays is 4.1%. Good agreement with target reference values and flame atomic absorption measurements is reported for both whole blood and blood serum samples, indicating that the total copper content is being monitored. By obviating the needs for mercury plating or disposal, solution stirring, oxygen removal or sample pretreatment, the prospects for on-site monitoring of blood copper levels are greatly improved.

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