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Determination of epinine in human urine by high-performance liquid chromatography coupled with electrochemical detection using carbon fiber microelectrodes

✍ Scribed by Chi Hua; Hian Kee Lee; An Kong Hsieh

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
270 KB
Volume
6
Category
Article
ISSN
1040-0397

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✦ Synopsis

Abstract

Epinine was detected with a simple and disposable carbon fiber flow electrode after being separated by high‐performance liquid chromatography (HPLC). An alumina adsorption procedure was used for the extraction of epinine from urine samples. The extraction recoveries at 1, 3, and 6 ΞΌg/mL epinine concentration levels were 66.9 Β± 3.7, 65.6 Β± 3.3, and 67.0 Β± 3.4%, respectively (n = 5). Linear responses to epinine in urine were obtained over the range of 0 to 10 ΞΌg/mL. The detection limit (signal‐to‐noise ratio = 5/1) for epinine in urine was 15 ng/mL.

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