Gandhi Shital, Mehta V, Rajput Sadhana
Department of Pharmacy, G. H. Patel Building, Donor's Plaza, The Maharaja Sayajirao University of Baroda, Fatehgunj, Vadodara-390 002, India.
Indian J Pharm Sci. 2011 Sep;73(5):583-6. doi: 10.4103/0250-474X.99022.
A simple, sensitive and highly selective electrochemical method was developed for the simultaneous determination of nitazoxanide and ofloxacin in aqueous media (Britton-Robinson buffer, pH-8.36) on a hanging mercury drop electrode (HMDE) using differential pulse polarography (DPP). Using DPP a separation of about 936 mV between the peak oxidation potentials of nitazoxanide and ofloxacin present in binary mixtures was obtained. The quantification limits for the simultaneous determination of nitazoxanide and ofloxacin were 0.083 μg/ml and 0.208 μg/ml, respectively. The proposed method was successfully applied for the simultaneous determination of nitazoxanide and ofloxacin in bulk drug and pharmaceutical tablet formulation.
开发了一种简单、灵敏且高选择性的电化学方法,用于在悬汞滴电极(HMDE)上,在 Britton-Robinson 缓冲液(pH - 8.36)的水性介质中,使用差分脉冲极谱法(DPP)同时测定硝唑尼特和氧氟沙星。使用 DPP 可实现二元混合物中硝唑尼特和氧氟沙星的峰氧化电位之间约 936 mV 的分离。同时测定硝唑尼特和氧氟沙星的定量限分别为 0.083 μg/ml 和 0.208 μg/ml。所提出的方法成功应用于原料药和药物片剂制剂中硝唑尼特和氧氟沙星的同时测定。