摘要
[目的]利用光纤传感共振瑞利散射荧光法测定中草药黄芪中痕量砷。[方法]将黄芪进行前处理,采用氢化物发生—催化,结合光纤传感,优化试验条件,共振瑞利散射光谱法测定砷含量。[结果]最佳试验条件为0.3 mol/L硫酸、0.9 mol/L Na BH4、0.2 mol/L Na BH4。方法学考察显示,该方法的RSD为6.9%,回收率为96%~105%。[结论]该方法较简单、易行、准确度高、稳定性好,值得推广应用。
[Objective] The aim was to determine the trace arsenic in Radix Astragali by optical fiber- sensing resonance rayleigh scattering method. [Method] A. membranaceus was pretreated by hydride generation -catalysis, combined with optical fiber sensing, experimental conditions were optimized and arsenic content was determined by resonance rayleigh scattering spectroscopy. [ Result ] The best experimental conditions were 0.3 mol/L sulfuric acid,0.9 mol/L NaBH4 and 0.2 mol/L NaBH4. RSD was 6.9% and the recovery was between 96% - 105%. [Conclusion] The method is simple, easy, accurate, stable and worthy of popularization and application.
出处
《安徽农业科学》
CAS
2017年第5期118-119,153,共3页
Journal of Anhui Agricultural Sciences
关键词
黄芪
砷
含量测定
光纤传感共振瑞利散射荧光法
Astragalus membranaceus
Arsenie
Content determination
Fiber-optic resonance rayleigh scattering
