罐头食品中锡的微波消解原子荧光光谱测定法

目的建立微波消解原子荧光光谱测定罐头食品中锡的分析方法。方法样品经微波消解，用原子荧光光谱法选择最佳的仪器条件和测定条件，进行锡含量的测定。结果在最佳条件下，锡含量在0—100μg／L范围内线性良好，相关系数为0．9997，相对标准偏差为1．87％-2．39％，回收率为93．7％-97．4％。结论用该法测定罐头食品中锡含量，操作简便，快速、干扰少，结果准确可靠。

Determination of Tin in Canned Food with Microwave Digest Atomic Fluorescent Spectrometry

Objective ] To establish a analytical method of microwave digest atomic fluorescent spectrometry for the determination of tin in canned food. Methods] Samples were digested with microwave and determined for the concentration of tin by atomic fluores- cent spectrometry in the best condition of both apparatus and determination. Results ] Under the best condition, the tin concentration demonstrated a good linear relationship within the range of 0 - 100 μg/L, the correlative coefficient was 0.9997, the RSD was 1.87% - 2.39%, and recovery rate was 93.7% - 97.4%. Conclusion] This method for determining the concentration of tin in canned food is simple, rapid, accurate and reliable with little interference.