微波消解-氢化物发生-ICP-OES法快速检测中药朱砂中痕量砷  

Rapid determination of trace arseric in cinnabar by hydride generation-ICP-OES with microwave digestion

作　　者：曾丽[1] 蒋秋桃[1] 李文莉 唐晖[1] 马杰 舒毕琼 李洁[1] 

机构地区：[1]中南大学化学化工学院,长沙410083 [2]湖南省食品药品检验研究院,长沙410001

出　　处：《中南药学》2015年第3期288-291,共4页Central South Pharmacy

摘　　要：目的建立微波消解-氢化物发生-电感耦合等离子体原子发射光谱法（微波消解-HG-ICP-OES）测定朱砂中痕量砷（As）含量。方法经微波消解对11批样品进行预处理,采用HG-ICP-OES法进行检测。结果 As的标准曲线回归方程的相关系数为1.000,检出限为0.369 6μg·L-1,重复性良好（RSD=2.7%）,加样回收率在95.1%~102.9%。结果表明,不同产地的朱砂中As含量相差较大,其中有几批As含量超标。结论微波消解-HG-ICP-OES法具有快速、灵敏、准确、背景值低、抗干扰能力强等优点,该方法适合中药朱砂中As的痕量检测。Objective To establish a microwave digestion-hydride generation-inductively coupled plasma optical emission spectrometer（microwave digestion-HG- ICP-OES） method to determine the content of As in cinnabar. Methods Totally 11 batches of cinnabar were pretreated by microwave digestion and the content of As was determined by HG-ICP-OES. Results The correlation coefficient of linear regression equation for As was 1.000, the detection limit was 0.369 6 μg·L- 1, and the RSD was 2.7%. The recovery was at 95.1%- 102.9%. The content of As varied widely from different areas, and a few samples exceeded the standard. Conclusion The method is rapid, sensitive and reliable, with low background value and strong anti-interference ability.

关 键 词：朱砂 微波消解 氢化物发生 电感耦合等离子体原子发射光谱法 砷 

分 类 号：R917[医药卫生—药物分析学]