A method for determining the selenium content of grain and vegetable agricultural products in Enshi area by microwave digestion and atomic fluorescence spectrometry was established.The samples were processed by microwave digestion instrument,and the selenium content in corn,wheat,tomatoes,cabbage and rice was determined by atomic fluorescence spectroscopy.The results showed that in the range of 1.0～10.0 μg·L-1,the linear relationship between selenium content and fluorescence value was good,the linear equation was y=139.44x+31.464,the correlation coefficient was 0.999 8,the recovery rate was 95.63%～102.80%,the RSD was less than 1.2%,and the precision RSD was less than 0.1%.This method has the advantages of simple operation and good reproducibility,and can meet the requirements for the determination of selenium content in grain and vegetable agricultural products in Enshi area.
关键词
硒含量/粮食及蔬菜类/微波消解-原子荧光光谱法/恩施地区
Key words
selenium content/food and vegetables/microwave digestion-atomic fluorescence spectrometry/Enshi district
维普
万方数据