摘要
为破除国际贸易壁垒,保障民众健康,尝试建立具有更高灵敏度的检测纺织品萃取液中六价铬的方法。采用离子色谱-电感耦合等离子体质谱联用技术(IC-ICP-MS),使用IonPac AG11阴离子交换色谱柱、NH4NO3淋洗液,结合梯度洗脱和碰撞反应池技术(CCT),通过对照实验和同位素丰度比,对色谱图做了较为详细的分析与讨论。实验表明,本方法可以很好地分离溶液中的三价铬[Cr(Ⅲ)]和六价铬[Cr(Ⅵ)]。当进样量为100μL时,对溶液中六价铬的检出限达到0.02μg/L。本方法操作简便、灵敏度高,适用于检测纺织品中可萃取的六价铬。
To eliminate the international trade barriers and safeguard the people＇s health, a method was developed to measure chromium （Ⅵ） in the extract of textiles with higher sen- sitivity. It was based on ion chromatography combined with inductively coupled plasma mass spectrometry （IC-ICP-MS）. IonPac AGll anion-exchange column and NH4NOa mo- bile phase were used, with gradient elution and collision cell technology （CCT）. The chro- matograms were analyzed and discussed through control experiments and isotopic abundance ratios. The results show that it can separate chromium （ Ⅲ ） and chromium （Ⅵ） very well. A limit of detection of 0.02 μg/L for detecting chromium （Ⅵ） is obtained with an injection volume of 100μL. This method can meet the requirements for determination o{ extractable chromium （Ⅵ） in textiles with simple operation and high sensitivity.
出处
《质谱学报》
EI
CAS
CSCD
北大核心
2012年第5期290-294,314,共6页
Journal of Chinese Mass Spectrometry Society
基金
国家质检总局科技计划项目(2010IK099)资助
