离子交换分离-石墨炉原子吸收光谱法测定保健食品中六价铬及三价铬  

Ion exchange separation and determination of Cr(Ⅲ) and Cr(Ⅵ) in health food samples by furnace atomic absorption spectrometry

作　　者：汤鋆[1] 应英[1] 于村[1] 俞莎[1] 张念华[1] 马冰洁[1] 

机构地区：[1]浙江省疾病预防控制中心,杭州310009

出　　处：《中国卫生检验杂志》2008年第7期1333-1334,1338,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的：建立测定保健食品中Cr（Ⅲ）和Cr（Ⅵ）含量的新方法。方法：利用离子交换树脂装填的色谱柱，使Cr（Ⅲ）和Cr（Ⅵ）得以分离，洗脱液引入石墨炉原子吸收光度仪进行测定。结果：选定了最佳分离和测量条件，该方法的灵敏度、精密度均能满足检测工作的需要。回收率在74％～107％之间。结论：本法简便、快速、准确，灵敏度和精密度高，适用于一般保健食品中Cr（Ⅲ）和Cr（Ⅵ）含量的测定。Objective：The determination for Cr（Ⅲ） and Cr（ Ⅵ ） in Health food was developed. Methods：The Chromium （Ⅲ） and chromium （Ⅵ） in Health food samples were separated by the strong basic anion exchange system. The rinsed squids were analyzed by the atomic absorption spectrometry. Results：The best separated and measuring conditions were ensured. The sensitivity and accuracy in this ways could satisfy the testing necessary. The recovery rates were from 74% to 107%. Conclusion：The analyzing way was more brief and quick and exacted. The sensitivity and accuracy were high. It was suited for analyzing the Chromium （Ⅲ） and chromium （ Ⅵ ） in Health food samples.

关 键 词：Cr(Ⅲ)和Cr(Ⅵ) 阴阳离子交换 保健食品 

分 类 号：O657.31[理学—分析化学]