离子色谱-电感耦合等离子体质谱法检测玩具中六价铬  

Determination of Chromium(VI) in Toys Using Ion Chromatography-Inductively Coupled Plasma Mass Spectrometry

作　　者：洪锦清[1] 陈明[1] 李敬[1] 程玉龙[1] 王瓒[1] 

机构地区：[1]江苏出入境检验检疫局,江苏扬州225009

出　　处：《检验检疫学刊》2013年第5期7-9,76,共4页Journal of Inspection and Quarantine

基　　金：国家质检总局科技计划项目(2010IK099)

摘　　要：建立了用离子色谱-电感耦合等离子体质谱法检测玩具材料迁移液中六价铬的新方法。采用阴离子交换色谱柱、中性NH4NO3淋洗液,结合梯度洗脱和碰撞反应池技术。实验表明,本方法可以很好地分离溶液中的三价铬和六价铬。当进样量为100μL时,对溶液中六价铬的检出限达到0.02μg/L。本方法灵敏度高,线性范围宽,加标回收率接近100%,能够满足新指令对玩具材料中可迁移六价铬的检测要求。To cope with the new EU toy safety directive, we developed a new method based on ion chromatography combined with inductively coupled plasma mass spectrometry （IC-ICP-MS） to measure chromium （VI） in the migration solution of toy materials. This method engaged IonPac AG11 anion-exchange column and neutral NH4NO3 mobile phase, with gradient elution and collision cell technology. The results showed that chromium （III） and chromium （VI） could be separated very well. A limit of detection of 0.02μg/L for chromium （VI） was obtained with an injection volume of 100μL. This method is of high sensitivity, wide linearity range, and good recovery rate （approaching 100 %）, which can meet the requirements of new directive for determination of migratable chromium （VI） in toy materials.

关 键 词：六价铬 玩具 离子色谱 电感耦合等离子体质谱 

分 类 号：O657.63[理学—分析化学]