摘要
[目的]简便快速测定枸杞中痕量铅的含量。[方法]采用氢化物-原子荧光法测定枸杞中的铅含量。[结果]采用干法灰化样品，以HCl-KBH4-K3Fe（CN）。为反应测定体系，铅的质量浓度在0～25μg／L范围内呈线性关系，相关系数为0．9993。检出限为0．12μg／L（n=8）。加标回收率为99．6％～103．0％。相对标准偏差小于2．6％（n=8）。[结论]该方法具有简便快速、灵敏度高、准确可靠等特点，可满足枸杞中痕量铅的检测要求。
[ Objective ] The aim of this study was to determine the trace lead content on Barbarum rapidly and easily. [ Method] A method for determination of trace lead in Barbarum samples by a hydride generation atomic fluorescence spectrometry has been developed. [ Result ] By dryashing digestion and using HCl -KBH4 -K3 Fe （CN）6 system, this study found out that the quality concentration demonstrates a linear correlation in the range of 0 - 25 μg/L and the correlation coefficient is 0.999 3, the detection limit is 0. 12 μg/L（ n = 8 ）. The recovery is in the range of 99.6 % - 103.0 % and the relative standard deviation was less than 2.6 % （ n = 8 ）. [ Conclusion] This method is simple, rapid and sensitive, so it can be successfully used for the determination of trace lead in Barbarum.
出处
《安徽农业科学》
CAS
北大核心
2009年第4期1416-1417,共2页
Journal of Anhui Agricultural Sciences
关键词
氢化物-原子荧光光谱法
铅
枸杞
Atomic fluorescence spectrometry
Hydride generation
Lead
Barbarum L.
