硫酸锌眼膏含量测定,按文献,介绍的络合量法,因滴定前浴解眼膏基质的条件欠理想,被检成份(硫酸锌)转溶于木层不完全,使测得结果与药品实际含量偏差较大。本文采用乙醇促进基质中硫酸锌转入水层,获得了较为满意的测定结果,现介绍如下。一.测定方法精密称取检品5g,加氯仿10ml溶解后,加乙醇10ml,氨-氯化铵缓冲液(pH=10)5ml,充分搅拌,加络黑T指示液4滴,于不断搅拌 Zinc sulfate eye ointment content, according to the literature, the introduction of the complex amount method, due to pretreatment bath ointment base matrix conditions less than ideal, the seized ingredients (zinc sulfate) in the wood layer is incomplete, the measured results and The actual content of drugs deviations. In this paper, the use of ethanol to promote zinc sulfate matrix into the water, obtained more satisfactory results, are presented below. A determination of accurately weighed seized goods 5g, add chloroform 10ml dissolved, add ethanol 10ml, ammonia - ammonium chloride buffer (pH = 10) 5ml, stir, add black T indicator solution 4 drops, stirring constantly