微波消解-石墨炉原子吸收光谱法测定乳和乳制品中的砷  

Determination of arsenic content in milk and dairy products by Microwave digestion-graphite furnace atomic absorption spectrographic methods

作　　者：乌尼尔[1] 高娃[1] 其其格[1] 赵源[1] 崔涛[1] 胡桂林[1] 常建军[1] 李梅[1] 

机构地区：[1]内蒙古蒙牛乳业集团股份有限公司,呼和浩特011500

出　　处：《中国乳品工业》2010年第7期45-47,共3页China Dairy Industry

摘　　要：采用微波消解技术处理样品,减少了被测元素的损失,通过石墨炉原子吸收光谱法进行测定,对升温程序的控制和基体改进剂的引入来达到提高灵敏度和准确度的目的。在选定的最佳仪器条件下该方法检出限为0.22μg/L,回收率为88%～105%,相对标准偏差为1.04%～3.30%。本方法适合用于分析乳和乳制品中砷的质量分数,灵敏度高、简便、快速、试剂用量少、损失少等特点,实现了分析的自动化和连续化等。Using microwave digestion technologies to process samples, reducing the loss of the elements measured by graphite furnace atomic absorption spectrometry for the determination of the temperature control of the program and the introduction of matrix modifier to achieve greater sensitivity and accuracy of the purpose. The best equipment of the selected conditions, the method detection limit is 0.22 μg/ L, the recovery rate is 88% - 105% and relative standard deviation is 1.04 %- 3.30%, this method is suitable for the analysis of arsenic in milk and dairy products mass fraction, high sensitivity , simple, rapid, reagent use less, the loss characteristics of low achieving automated and continuous analysis and so on.

关 键 词：微波消解 石墨炉原子吸收 砷 乳和乳制品 

分 类 号：TS252.7[轻工技术与工程—农产品加工及贮藏工程]