论文部分内容阅读
目的优化微波消解-氢化物原子荧光光谱法检测食品中的微量元素硒。方法采用不同前处理方法对检测结果影响进行研究,分别对质控样经微波消解后是否赶酸作对比,赶酸时是否加盐酸作对比,微波消解与电热板湿法消解作对比,用氢化物原子荧光光度仪测定其含量。结果用微波消解,赶酸后加盐酸继续赶酸,用原子荧光光谱仪进行检测,检出限为0.425μg/kg,定量限为1.42μg/kg,精密度为2.67%,回收率为93%～109%。结论该方法简便、快速、准确度高,可用于食品中硒的检测。
Objective To optimize the determination of trace element selenium in food by microwave digestion-hydride atomic fluorescence spectrometry. Methods The influence of different pretreatment methods on the test results was studied. The comparison of whether the acid-control sample was subjected to microwave digestion or not was compared with hydrochloric acid. The microwave digestion was compared with the wet digestion by hot plate. Hydrogenation Determination of its content by atomic fluorescence spectrometry. The results with microwave digestion, hydrochloric acid to catch the horsepower to continue to catch acid, using atomic fluorescence spectrometry detection limit of detection was 0.425μg / kg, the limit of quantification was 1.42μg / kg, the precision was 2.67%, the recovery was 93% 109%. Conclusion The method is simple, rapid, accurate and can be used for the detection of selenium in food.