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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 28, Number 4
BKCSDE 28(4)
April 20, 2007

Title	Electrochemical Determination of Ciprofloxacin Based on the Enhancement Effect of Sodium Dodecyl Benzene Sulfonate
Author	Shenghui Zhang*, Shuang Wei
Keywords	Ciprofloxacin, Voltammetric determination, Surfactant, Carbon paste electrode
Abstract	Herein, a new electrochemical method was described for the determination of ciprofloxacin based on the enhancement effect of an anionic surfactant: sodium dodecyl benzene sulfonate (SDBS). In pH 4.0 phosphate buffer and in the presence of 1.0 × 10^-4 mol/L SDBS, ciprofloxacin yields a well-defined and sensitive oxidation peak at the carbon paste electrode (CPE). Compared with that in the absence of SDBS, the oxidation peak current of ciprofloxacin remarkably increases in the presence of SDBS. The experimental parameters, such as supporting electrolyte, concentration of SDBS, and accumulation time, were optimized for ciprofloxacin determination. The oxidation peak current is proportional to the concentration of ciprofloxacin over the range from 8.0 × 10^-8 to 5.0 × 10^-6 mol L^-1. The detection limit is 2.0 × 10^-8 mol L^-1 after 2 min of accumulation. This new voltammetric method was successfully used to detect ciprofloxacin in drugs.
Page	543 - 546
Full Text	PDF

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