摘要
目的：建立宁德大黄鱼中硒的微波消解氢化物原子荧光光谱测定方法。方法：样品经微波消解，在铁氰化钾一盐酸体系中，用硼氢化钾作还原剂，采用氢化物原子荧光光谱法测定。结果：硒浓度在0～50μg／L的范围内线性良好，相关系数r=0．9998，方法检出限为0．15μg／L，样品检出限0．019mg／kg，相对标准偏差0．91％-4．22％。回收率94％～104％。结论：方法灵敏度高，准确度好，精密度高，干扰少，简便适用，适合大黄鱼中硒的测定。
Objective： To establish the method of microwave digestion--hydrde generation--atomic fluorescence spectrometry for the determination of selenium in Ningde Large yellow croaker. Methods： Sample was digested by microwave, in ferricyanide potassium and hydrochloric acid, using potassium borohydride as the reducer, then determined by hydrde generation--atomic fluorescence spectrometry. Results： Good linearity was presented within the selenium concentration range of 0 μg/L- 50.0 μg/L, correlation coefficient r = 0.9998, the detection limit was 0.15μg/L, the sample detection limit was 0. 019 mg/kg, the relative standard deviation was 0.91% -4. 22 % and the recovery rate was 94 % -104 %. Conclusion The method has the advantages of high sensitivity, high accuracy, high precision, less interference, simple operation ,it suitable for determination of selenium in Large yellow croaker.
出处
《微量元素与健康研究》
CAS
2014年第1期48-50,共3页
Studies of Trace Elements and Health
关键词
大黄鱼
硒
微波消解
氢化物原子荧光光谱法
Large yellow croaker
Selenium
Microwave digestion
Hydrde generation--atomic fluorescence spectrometry
