离子色谱法测定塑料中卤素准确性研究

Study on Accuracy of Ion Chromatography for Determination of Halogens in Plastics

利用氧弹燃烧-离子色谱法测定塑料样品中的卤素含量。研究了氧弹燃烧过程中不同的处理条件(吸收液浓度、样品质量、吸收时间等)对卤素含量测试结果准确性的影响。结果表明:在最佳前处理条件下,卤素含量相对标准偏差不超过5.0%,其加标回收率97.5%~104.5%,满足测试要求。

The oxygen bomb combustion-ion chromatography was used to determine the halogen content in plastic samples.The effect of different treatment conditions(absorbent solution concentration,sample quality,absorption time,etc.)on the accuracy of the halogen content test results during the oxygen bomb combustion process was studied.The results show that under the best pre-treatment conditions,the relative standard deviation does not exceed 5.0%,and the standard addition recovery rate is from 97.5%to 104.5%,which meets the test requirements.