Abstract
Benorilate was determined by the differential pulse voltammetry (DPV) using a carbon paste electrode in 1.25×10−3 mol·l−1 KH2PO4 and Na2HPO4 buffer solution (pH=6.88, 25°C). The anodic peak potential was +1.020 V (versus saturated calomel electrode (SCE)). A good linear relationship was realized between the anodic peak currents and benorilate concentrations in the range of 2.0×10−7 to 4.5×10−4 mol·l−1 with the detection limit of 5.0×10−8 mol·l−1. The recovery was 94.3 to 104.6% with the relative standard deviation of 3.5% (n=9). The pharmaceutical preparations, benorilate tablets samples, were determined with desirable results. This work was supported by the National Natural Science Foundation of China (No. 20175023, 20375034), and the Natural Science Foundation of Jiangsu Provincial Education Department (No. 02KJB150013).
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