容量法测定硫酸羟胺反应液与产品中硫酸根的含量  

Determination of Sulfate Content in Hydroxylamine Sulfate Reaction Solution and Product by Volumetric Method

作　　者：王艳[2] 岳涛 唐晓婵[1,2] 王瑞菲[1,2] 徐婷 冯维春[1,2] Wang Yan;Yue Tao;Tang Xiaochan;Wang Ruife;Xu Ting;Feng Weichun(Qingdao University of Science&Technology,Shandong Chemical Industry Research Institute,Jinan,Shandong 250014,China;Chemical Technology Academy of Shandong Province,Organic Reaction in Aqueous Engineering Research Center of Shandong Province,Jinan,Shandong 250014,China)

机构地区：[1]青岛科技大学山东化工研究院,山东济南250014 [2]山东省化工研究院山东省水相有机合成及高效清洁分离工程技术研究中心,山东济南250014

出　　处：《化学世界》2021年第5期271-275,共5页Chemical World

基　　金：山东省“泰山学者”建设工程基金(No.08190201)资助项目。

摘　　要：在弱酸性条件下,先用过量的氯化钡将溶液中的硫酸根完全沉淀,用甲基百里香酚蓝作指示剂、乙二胺四乙酸二钠(EDTA)标准滴定溶液返滴定过量的氯化钡。结果表明,对相关共存物的选择性良好,适用于样品中硫酸根的质量范围为0.01~0.15 g的分析,硫酸羟胺反应液和产品中硫酸根的相对标准偏差(RSD)分别为0.9%,0.2%(n=6)。该方法操作简便、准确度高、重复性好、检测速度快,对硫酸羟胺的质量控制与生产工艺的参数控制具有重要意义。Under weak acidic condition, excess barium chloride solution was added to precipitate sulfate completely, and then methyl phenol blue was used as indicator after the filtration and washing of the precipitate, and excessive barium chloride was titrated with ethylenediamine tetraacetic acid disodium salt(EDTA) standard titration solution. The results showed that this method displayed good selectivity to the related coexistent substances. The method is suitable for the samples with sulfate content in the mass range of 0.01~0.15 g. The relative standard deviation(RSD) of sulfate content in hydroxylamine sulfate reaction solution and product were 0.9% and 0.2%, respectively(n=6). The results were consistent with those of gravimetric method, and showed good accuracy. The method is easy to operate, accurate, repeatable and fast, therefore the method was of high importance for quality control of hydroxylamine sulfate and parameter control in its production processes.

关 键 词：容量法 硫酸羟胺反应液 硫酸羟胺产品 硫酸根 

分 类 号：O656[理学—分析化学]