分光光度法测定聚乙烯中的氟  

Spectrophotometric Determination of Fluorine in Polyethylene

作　　者：刘立行[1] 张金萍[1] 赵春琛 胥晓芳 

机构地区：[1]抚顺石油学院应用化学系 [2]抚顺乙烯化工厂质检处

出　　处：《石油化工》1997年第7期471-473,共3页Petrochemical Technology

摘　　要：以８－羟基喹啉萃取分离干扰离子，用茜素络合剂－镧（Ⅲ）显色体系测定聚乙烯中的氟，并考察了测定条件。合成样品回收率９８．５％，三氟甲基苯甲酸标样回收率９７．１％，聚乙烯样品分析结果的相对标准偏差为１．８％。Alizarin complexone lanthanum(Ⅲ) coloured system is utilized to determine fluorine in Polyethylene,using 8 hydroxylquinoline to extract and separate the interference ions.The measuring conditions are studied.The recovery of synthetic sample and that of α,α,α trifluoro m toluic acid are 98% and 97% respectively.The relative standard deviation for analytical results of polyethylene is 1.8%.This method has advantages of simplicity and accuracy.

关 键 词：分光光度法 茜素络合剂 8-羟基喹啉萃取 聚乙烯 氟 

分 类 号：O632.12[理学—高分子化学] O657.3[理学—化学]