摘要
目的：通过对微波消解条件的优化研究,建立测定强化食品中钙、铁、锌的快速、简便预处理方法。方法：采用微波消解技术,在加热、加压条件下,用硝酸和过氧化氢彻底分解强化食品,消解后的样品用原子吸收分光光度法测定钙、铁、锌。结果：用微波消解技术处理强化食品,钙、铁、锌相对标准偏差分别小于2.43%、1.92%、1.74%,回收率分别为95.8%～102%、96.8%～103%、96.4%～103%。对标准物质GBW 07605测定,测定结果满意。结论：本方法操作简单,分析速度快,灵敏度精密度准确度较好,适用于强化食品的快速消解及钙、铁、锌的快速检测。
Objective：By optimizing the condition of microwave digestion,we establish a fast and simple pretreament method to determine the calcium,iron and zine in fortified foods.Methods：Used microwave digestion technique,digest the fortified foods by Nitrate and Peroxide in the heating,pressure conditions.Then use the method of graphite furnace atomic absorption spectrometry to determine the calcium,iron and zine.Results：Dealing with the fortified foods by microwave digestion,the relative standard deviation（RSD） of calcium,iron and zine are less than 2.43%,1.92%,1.74%,and the recoveries of calcium is 95.8%~102%,the iron is 96.8%~103% and the zine is 96.4%~103%.the determination results of the reference materials GBW07605 is satisfaction.Conclusion：The advantage of microwave digeastion technology method operation is simple,analysis speed is fast and Sensitivity,Precision,Accuracy are fine.The microwave digestion technology is a ideal pretreatment technology to determine the lead in the fortified foods.
出处
《中国卫生检验杂志》
CAS
2009年第12期2801-2802,2975,共3页
Chinese Journal of Health Laboratory Technology
关键词
微波消解
强化食品
原子吸收
Microwave digestion
Fortified foods
Atomic absorption
