铅硼聚乙烯屏蔽材料中总硼的测定  

Determination of Total Boron in Lead-Boron Polyethylene Shielding Material

作　　者：卢菊生[1] 田久英[1] 盛红伍[2] 侯列奇[2] 

机构地区：[1]徐州师范大学化学化工学院,徐州221116 [2]中国核动力研究设计院,成都610041

出　　处：《理化检验（化学分册）》2007年第11期943-944,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：试样用稀硝酸溶解以除去大部分铅,经过滤后不溶物用碳酸钠加硝酸钠进行融熔。熔块用稀硝酸浸取,分取部分此母液,在pH 3.0的条件下通过离子交换柱分离除去残留在溶液中的铅,以pH 3.0的硝酸溶液淋洗分离柱,在淋出液中用常规的碱滴定法测定其总硼量。测定结果与蒸馏法的结果一致,方法的回收率为94%~106%,相对标准偏差(RSD)值为0.77%。The sample was dissolved with nitric acid to remove most of the lead,and after filtration the insoluble residue was fused with sodium carbonate and potassium nitrate.The melt was taken up with dil.HNO3.An aliquot of the sample solution was taken and lead remanied in the solution was removed by ion-exchange chromatography at pH 3.0.Boron was then determined in the eluate from the column by the alkalimetric titration.Results obtained by the present method were in comformity with the results obtained by the di...

关 键 词：碱滴定法 总硼量 铅硼聚乙烯 屏蔽材料 

分 类 号：TB302[一般工业技术—材料科学与工程]