【摘要】 建立了保健食品中微量硒的断续流动-氢化物发生原子荧光测定方法,方法灵敏度高,准确度好.在选定的实验条件下,荧光强度与硒浓度在0.7~280 ng.mL-1范围内呈线性关系,相关系数0.999 6,检出限为0.2 ng.mL-1,回收率96.5%~101.0%,相对标准偏差不超过1.47%.更多还原

【Abstract】 A method for the determination of trace selenium in Hygienical Foods by the intermittent flow-hydride generation atomic fluorescence spectrometry has been developed with high sensitivity and fine accuracy.Under the selected experiment conditions,there is a linear relationship between the fluorescence intensity and selenium concentration in the range of 0.7~280 ng·mL-1 with correlation coefficient of 0.9996,the limit of detection is as low as 0.2 ng·mL-1.The recovery is 96.5%~101.0%,and the RSD is not more than 1.47%.更多还原