工业次氯酸钠溶液中氯酸钠含量的测定.pdfVIP

氯碱工业 Vo1. 50 , No.12 第 50 卷第12 期 Chlor - Alkali IndustIγ Dec. , 2014 2014 年 12 月 [分析与测试] 工业次氯酸纳溶液中氯酸纳含量的测定 李靖* (江西蓝恒达化工有限公司，江西梓树 331200) [关键词]工业次氯酸铀溶液;氢氧化铀;氯酸铀;测定 [摘 要]利用次氯酸锅和氯酸铀的氧化能力不同，以双氧水消解次氯酸铀的影响，以硫酸中和次氯酸纳溶液 中的氢氧化铀，以硫酸亚铁作还原剂，将试样中的氯酸铀还原，再用重铭酸饵标准溶液氧化过量的硫酸亚铁，从而 测定工业次氯酸铀溶液中氯酸铀的准确浓度。方法简单可靠，测得的回收率高，检测极限(质量浓度)可达0.05 g1L以下。 [中固分类号] TQ0 14 [文献标志码] B [文章编号] 1 ∞8 -133X(2014) 12 -∞38 -02 Determination of sodium chlorate content in industrial sodium hypochlorite solution LI Jing (Jiangxi Blue Hengda Chemical Co. , Ltd. , Zhangshu 331200 , China) Key words: industrial sodium hypochlorite solution; sodium hydroxide; sodium chlorate; determination Abstract: Sodium chlorate concentration in industrial sodium hypochlorite solution was determined correctly. 币le determination method comprised adding hydrogen peroxide solution to eliminate the influence of sodium hypochlorite on the basis of different oxidizing ability between sodium hypochlorite and sodium chlorate , neutralizing the sodium hydroxide contained in sodium hypochlorite solution with sulfuric acid , reducing the sodium chlorate contained in the sample with ferrous sulfate as reducing agent , and oxidizing the excessive ferrous sulfate 白白 potassium dichromate standard solution. The method w副 simple and reliable , and the recoveηrate was high. The determination limit could be as low as less than 0.05 g/L. 现行国内 ADC 发泡剂的生产工艺主要是尿素 2C1 +4H 0 4HCl +2H 0 +30 ; 2 2 2 一-→