火焰原子吸收/发射光谱法对小麦粉中钠的检测

本文对钠元素在食品中的检测方法进行了简要比较，同时采用火焰原子吸收和火焰原子发射光谱法对国家标准物质小麦粉中的钠元素进行了检测，对前处理干法消化、湿法消化两种不同过程进行了比较，在两种前处理方法的称样量、消化时间、所用试剂、损失等方面进行了对比，找到两种方法各自的优缺点；同时本实验也对检测方法进行了比较，在前处理过程对结果无较大的影响，发射光谱法较吸收光谱法测得结果略微偏低。本文对于试验研究中，尤其是营养标签必测项Na元素的检测，选择何种前处理方法和检测方法具有一定参考价值。

Compare of AAS and AES analysis in the test of Na in wheat

Sodium was tested by AAS and AES in national standard of wheat flour , ash digestion and wet digestion was compared at the same time, and proved the advantages and disadvantages of the both methods by comparison and assessment on the sample weighed,the time of the digestion time,reagent and the lose. There is no large diference bettween the two pre-threatment method. At the same time,we were compared the method of detection, the result of the AES is slightly lower.This paper has some reference value in how to choose the method of digestion and detection.