Diagnostic assay of chromium (VI) in the ex vivo fluid of the urine of a smoker using a fluorine-doped handmade sensor
✍ Scribed by Suw Young Ly; Min Joon Kim
- Book ID
- 102311302
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 260 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0887-8013
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✦ Synopsis
Abstract
A voltammetric diagnosis of a chromium (VI) ion was investigated using a fluorine‐doped graphite pencil electrode. Square wave (SW) stripping working conditions were attained at a high range of 0.051–0.45 mg L^−1^ and a microrange of 0.05–0.4 µg L^−1^ in a 0.1 M NH~4~H~2~PO~4~ electrolyte solution, at a relative standard deviation of 1.68% (RSD, n=15), using 10.0 µg L^−1^ Cr(VI). A fast experimental time was used only for the 120 sec SW accumulation time. An analytical detection‐limit (DL) of 0.008 µg L^−1^ was attained. DL appeared to be more sensitive than common voltammetric and spectrophotometric assays. The developed sensor was applied to tap water and the urine of a smoker. It was found that the methods can be applicable for in vivo fluid or medicinal diagnosis. J. Clin. Lab. Anal. 23:82–87, 2009. © 2009 Wiley‐Liss, Inc.