Voltammetric behavior and determination of estrogens at Nafion-modified glassy carbon electrode in the presence of cetyltrimethylammonium bromide
S Hu, K Wu, H Yi, D Cui - Analytica Chimica Acta, 2002 - Elsevier
S Hu, K Wu, H Yi, D Cui
Analytica Chimica Acta, 2002•ElsevierA method is described for the determination of estrogens (estradiol, estrone and estriol) by
stripping voltammetry. These estrogens yield one well-defined oxidation peak at the Nafion-
modified glassy carbon electrode in the presence of cetyltrimethylammonium bromide
(CTAB). The peak current is proportional to the concentration of estradiol in the range from
2.5× 10− 8 to 1.5× 10− 6mol/l, and the detection limit is 1× 10− 9mol/l after accumulation of
6min. The total amounts of estrogens in the blood serums were determined using the …
stripping voltammetry. These estrogens yield one well-defined oxidation peak at the Nafion-
modified glassy carbon electrode in the presence of cetyltrimethylammonium bromide
(CTAB). The peak current is proportional to the concentration of estradiol in the range from
2.5× 10− 8 to 1.5× 10− 6mol/l, and the detection limit is 1× 10− 9mol/l after accumulation of
6min. The total amounts of estrogens in the blood serums were determined using the …
A method is described for the determination of estrogens (estradiol, estrone and estriol) by stripping voltammetry. These estrogens yield one well-defined oxidation peak at the Nafion-modified glassy carbon electrode in the presence of cetyltrimethylammonium bromide (CTAB). The peak current is proportional to the concentration of estradiol in the range from 2.5×10−8 to 1.5×10−6mol/l, and the detection limit is 1×10−9mol/l after accumulation of 6min. The total amounts of estrogens in the blood serums were determined using the voltammetric method, and the average recovery was 106.04%. The mechanism of the oxidation of estradiol was investigated by electrochemical techniques and UV spectra.
Elsevier
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