微波消解-原子荧光光谱法测定进口婴幼儿罐装辅食中的锡

Determination of tin in import infant canned food by microwave diges-tion-atomic fluorescence spectrometry

中文关键词:  微波消解  原子荧光光谱法  婴幼儿罐装食品  锡

英文关键词:microwave digestion  atomic fluorescence spectrometry  import infant canned food  tin

中文摘要:

      目的 应用微波消解-原子荧光光谱法测定进口婴幼儿罐装食品中的锡。方法 样品用微波消解后, 以锡高性能空心阴极灯为检测光源, 使用AFS-9800双道原子荧光光度计来检测进口婴幼儿罐装辅食中的锡。结果 实验结果表明, 该方法的最低检出限为1.25 μg/kg, 精密度为0.8%, 标准曲线范围为0~80 ng/mL, 相关系数为0.9992。实际样品测定中, 锡的回收率达到93.6%。结论 该检测方法简便快捷、灵敏度高, 适用于进口婴幼儿罐装辅食中的锡的检测分析。

英文摘要:

      Objective To develop a method for the determination of tin in import infant canned food by microwave digestion-atomic fluorescence spectrometry. Methods After the samples were digested by microwave, the tin in import infant canned food was detected by the AFS-9800 double channel atomic fluorescence photometer with high-performance hollow cathode lamp as detecting light. Results The experiment results showed that the detection limit of the method was 1.25 μg/kg, the precision was 0.8% and the range of standard curve was 0~80 ng/mL with correlation coefficient of 0.9992. In practical sample determination, recovery rate reached to 93.6%. Conclusion This method is quick, simple, and sensitive, which is suitable for the detection of tin in import infant canned food.