氧化比色法测定PA6切片中热水可萃取物  

Oxidation-photometric Determination of the Hot Water Extractables in PA6 Chips

作　　者：范桂如 李治华 

机构地区：[1]河北奇正环境科技有限公司,河北石家庄050061 [2]河北亚东化工集团有限公司,河北石家庄050035

出　　处：《广州化工》2010年第5期185-186,共2页GuangZhou Chemical Industry

摘　　要：PA6切片中的热水可萃取物被热水完全萃取后,在微波炉中消解,定量产生Cr(Ⅲ),Cr(Ⅲ)的浓度可用光度法测得,从而得出PA6切片中的热水可萃取物百分含量。本方法的线性范围为12mg/L^120mg/L;加标回收实验表明,回收率为98.2%~100.9%。An indirect method for the determination of the hot water extractables in PA6 chip was reported in this paper.After being extracted perfectly,the extractables were digested by K2Cr2O7 in microwave oven,then Cr（Ⅲ） was obtained,its concentration can be measured photometrically,and the content of the hot water extractables can thus be calculated indirectly.By present method the linear range was 12mg/L～120mg/L.Experiment indicated that the standard addition recovery for chip samples were 98.2%～100.9%.

关 键 词：光度法 热水可萃取物 微波消解 

分 类 号：TQ342.1[化学工程—化纤工业]