微波消解–电感耦合等离子体光谱法测定预包装食品中的钠含量  

Determination of Sodium in Prepackaged Foods by ICP–AES with Microwave Digestion

作　　者：冯歆轶 郭松年 张耀武 

机构地区：[1]西安市产品质量监督检验院,西安710065

出　　处：《化学分析计量》2014年第5期27-29,共3页Chemical Analysis And Meterage

基　　金：国家质检总局科技计划项目(2013QK149)

摘　　要：采用微波消解样品，建立电感耦合等离子体光谱（ICP-AES）测定预包装食品中钠含量的方法。结果表明，钠的质量浓度在0-100 mg／L范围内与光谱强度呈良好线性关系，相关系数为0.9999，钠的检出限为0.006 mg／L，加标回收率为95.5%-106.2%，测定结果的相对标准偏差为2.43%（n=6）。测定大米、菠菜、茶叶、脱脂奶粉和猪肉5个标准物质对方法进行验证，测定值与标准值吻合。该方法操作简便，适用于预包装食品中钠含量的检测。A method for the determination of sodium in prepackaged foods by ICP-AES was established with microwave digestion. Under the optional conditions,the linear range was 0-100 mg/L with the linear correlation coefficients of 0.999 9. The detection limit was 0.006 mg/L and the recoveries were ranged from 95.5%to 106.2%. The relative standard deviation of determination results was 2.43%（n=6）. The method was confirmed by five standard materials of rice,spinach,tea,skim milk powder and meat. The method is simple,and suitable for the determination of sodium in various of prepackaged foods.

关 键 词：微波消解 电感耦合等离子体光谱法 预包装食品 钠 

分 类 号：O657.3[理学—分析化学]