Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1994-09-30
1995-11-21
Niebling, John
Chemistry: electrical and wave energy
Apparatus
Electrolytic
20415312, 2041531, 204412, 204415, 204435, 435817, 4352871, 436 74, 436 77, G01N 2726
Patent
active
054683661
ABSTRACT:
The present invention provides a new device for use in measuring lead levels in biological and environmental samples. Using square wave coulometry and colloidal gold particles impregnated on carbon electrodes, the present invention provides a rapid, reliable, portable and inexpensive means of detecting low lead levels. The colloidal gold modified electrodes have microelectrode array characteristics and produce significantly higher stripping detection signals for lead than are produced at bulk gold electrode surfaces. The method is effective in determining levels of lead down to at least 5 .mu.g/dL in blood samples as small as 10 .mu.L.
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Harpold Michael A.
Henkens Robert W.
McCaffrey Terence M.
Morris Susan E.
Naser Najih
Andcare, Inc.
Bell Bruce F.
Niebling John
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