期刊
MICROCHIMICA ACTA
卷 186, 期 11, 页码 -出版社
SPRINGER WIEN
DOI: 10.1007/s00604-019-3797-7
关键词
Multichannel potentiostat; Hormones; Molecular imprinting; Electrochemical sensing; Urine analysis
资金
- Ministry of Science and Technology of the Republic of China, Taiwan
- MOST [106-2221-E-390-013-MY3, 106-2314-B-390-001-MY2, 107-2923-M-390-001-MY3]
This work reports on a modularized electrochemical method for the determination of the hormones cortisol, progesterone, testosterone and 17 beta-estradiol in urine. These hormones were employed as templates when generating molecular imprints from aniline and metanilic acid by electropolymerization on the surface of screen-printed electrodes. The electrically conductive imprint was characterized by SEM, AFM and cyclic voltammetry. A four-channel system was then established to enable simultaneous determination of the hormones by cyclic voltammetry. The detection limits for cortisol, progesterone, testosterone and 17 beta-estradiol are as low as 2, 2.5, 10 and 9 ag center dot mL(-1) (for S/N = 3).
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