溴化聚苯乙烯中溴、氯含量连续测定方法  

A simultaneous determination m ethod of bromide and chloride content of brominated polystyrene

作　　者：舒畅[1] 于海滨[1] 王日杰[2] 杨晓霞[2] 

机构地区：[1]中海油天津化工研究设计院,天津300131 [2]天津大学化工学院,天津300072

出　　处：《天津化工》2013年第2期25-26,共2页Tianjin Chemical Industry

摘　　要：提出了一种连续测定溴化聚苯乙烯中溴、氯含量的新方法。用四氢呋喃作溶剂溶解样品．加入联苯钠脱有机卤素，然后加水稀释，用稀硝酸调节pH值，采用ZD-2电位滴定仪测定等当点．从而确定溴、氯含量。检测范围溴含量在40％-70％，氯含量在0．5％～5％。该方法简单、快速、准确。A new method of simultaneously determining bromide and chloride content of brominated polystyrene is introduced. Organic halogen is transformed into inorganic halogen by sodium biphenyl in the presence of tetrahydrofuran. Then an acidic aqueous solution including Br- ,Cl- ion is analyzed by ZD-2 potentiometric titrator to determine bromide and chloride content. The applicable scope is 40% -70% to bromide,0.5% -5% to chloride. Such a method is accurate, rapid and practical.

关 键 词：溴化聚苯乙烯 溴 氯 连续测定 联苯钠 电位滴定 

分 类 号：TQ317.2[化学工程—高聚物工业]