微波消解和湿式消解在ICP—AES法中的应用比较

目的比较微波消解和湿式消解前处理法在等离子体发射光谱法（ICP—AES）测定食品中金属元素的应用效果。方法将微波消解和湿式消解法用于实际样品包括奶粉、乳饮料、白酒、面粉、水产品、肉制品、饮料等的测定，并对这2种方法进行比较。结果微波消解方法的检出限为0．0011～0．0218mg／L，可以满足测定的要求，不同元素RSD为0．23％-2．61％，回收率为90．6％～95．1％，对2种方法处理样品测定结果的试验数据进行统计学分析，确定各种元素差异均无统计学意义。结论微波消解前处理方法具有简便、快捷、回收率高、精密度高的优点，该方法适用于食品中金属元素的测定。

Comparison of the Application of Microwave Digestion and Wet Digestion

Objective] To compare the application effect of microwave digestion and wet digestion in the ICP AES determination of metallic elements in food. Methods]Microwave digestion and wet digestion were applied in the determination of milk powder, milk drink, white wine, flour, aquatic products, meat products, and soft drink and so on.Results]The detection limit of the microwave digestion was 0.011~0.0218 mg/L, which could satisfy the requirement of the determination; the recovery rate was 90.6%~95.1%; statisti...