黄连、附片和茯苓内铜元素激光诱导击穿光谱分析  

Laser Induced Breakdown Spectros Copy of Cu in Coptis Chinensis,Aconite Root and Poria Cocos

作　　者：李占锋[1] 王芮雯 邓琥[2,3] 尚丽平[3,4] 

机构地区：[1]西南科技大学制造科学与工程学院,四川绵阳621010 [2]西南科技大学信息工程学院,四川绵阳621010 [3]特殊环境机器人四川省重点实验室,四川绵阳621010 [4]西南科技大学极端条件物质特性联合实验室,四川绵阳621010

出　　处：《发光学报》2016年第1期100-105,共6页Chinese Journal of Luminescence

基　　金：国家自然科学基金(11176032);极端条件物质特性实验室资助课题(12zxjk05;13zxjk02);特殊环境机器人技术四川省重点实验室开放基金(13zxtk0502)资助项目

摘　　要：为了验证激光诱导击穿光谱技术对中药内重金属铜元素检测的可行性,以黄连、附片、茯苓作为检测对象,分别为其配制了一系列浓度不同的含铜样品。采用1 064 nm的纳秒脉冲激光器作为激发光源,八通道光谱仪进行光谱采集。选用Cu 324.7 nm作为特征谱线进行分析,实验确定最佳延迟时间为0.5μs。根据黄连、附片、茯苓的不同基体情况分别选取适当内标参量进行定量分析,所得线性拟合度分别为0.986,0.931,0.975,并与直接定标所得结果进行了对比。实验结果表明,内标法可提升拟合精度,激光诱导击穿光谱技术可用于中药重金属铜元素污染的快速检测。In order to verify the laser induced breakdown spectroscopy（ LIBS） is feasible for the detection of heavy metal elements in Chinese traditional medicine,using coptis chinensis,aconite root and poria cocos as detection object,a series of Cu element samples with different concentrations were prepared. 1 064 nm Nd ∶ YAG solid pulse laser was used as the excitation source,the eight channel spectrometer was used for spectral data acquisition. Cu 324. 7 nm was selected as characteristic spectral line,and the optimal delay time was determined for 0. 5 μs. According to the different substrate conditions of coptis chinensis,aconite root and poria cocos,the appropriate internal standard parameters were selected,and the linear degree was 0. 986,0. 931,0. 975,respectively. The results were compared with the results of direct calibration. The experiment results show that the internal standard method can improve fitting accuracy and LIBS can be used for the rapid detection of heavy metal Cu pollution of traditional Chinese medicine.

关 键 词：激光诱导击穿光谱技术 中药 重金属 内标法 定标曲线 

分 类 号：O567.32[理学—原子与分子物理]