氧弹燃烧-离子色谱法测定高分子聚合物的卤素

随着欧盟RoHS标准的实施,对塑料制品中卤素的检测也越来越受到重视。文章建立了一种采用氧弹燃烧法对塑料样品进行燃烧,以碳酸钠为吸收液进行吸收,离子色谱法分离测定微量卤素离子的方法。选择的色谱条件是:IonPac AS22离子交换柱,0.48mmol/L碳酸钠和0.1 mmo/L碳酸氢钠混合液作淋洗液,流速为1.0 mL/L,抑制型电导检测。氟、氯、溴、碘四种卤素的检测限(3倍噪声比)分别为0.007、0.009、0.027和0.033.相对标准偏差分别为1.19%、1.61%、1.02%和1.28%,回收率为78.2%~119.8%。方法具有简便、准确、灵敏等特点,可较方便地应用于常规的质量检测和控制。

Determination of Halogen in the Polymer by Ion Chromatography With Oxygen Bomb Combustion

Along with the implementation of European Union RoHS standard,the detection of the plastic products has attracted more attention.In the paper,a method to detect microhalogen in the plastic products by ion chromatography with oxygen bomb combustion and sodium carbonate as the absorption solution was investigated.All species are separated at Dionex IonPac AG22 and AS22 with mobile phase of a mixture of 4.8 mmol/L sodium carbonate and 1.0 mmol/L sodium bicarbonate at a flow-rate of 1.0 mL/min and suppress cond...