论文部分内容阅读
测定硫黄中硫的方法,中国药典采用硫酸钡重量法,样品用氢氧化钾醇溶液溶解,用过氧化氢氧化,本文仍采用药典溶样的方法,并将重量法改为中和滴定容量法,用过量的乙醇制氢氧化钾标准溶液溶样,借过氧化氢将硫氧化成硫酸根,消耗与硫等当量的氢氧化钾,剩余的氢氧化钾用标准盐酸滴定,同时做空白试验,即可求出试样中硫的含量。
Determination of sulfur in sulfur method, the Chinese Pharmacopoeia barium sulfate gravimetric method, the sample was dissolved with potassium hydroxide alcohol solution, with hydrogen peroxide oxidation, this article still uses the method of pharmacopoeic sampling, and the gravimetric method to neutralization titration volume method , With excess ethanol standard solution of potassium hydroxide sample, the oxidation of hydrogen sulfide to sulfate by hydrogen peroxide, consumption of sulfur and potassium hydroxide equivalent, the remaining potassium hydroxide standard hydrochloric acid titration, while making a blank test, The sample can be obtained in the sulfur content.