当前位置: X-MOL 学术Anal. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Characterization of the Chinese Traditional Medicine Artemisia annua by Laser-Induced Breakdown Spectroscopy (LIBS) with 532 nm and 1064 nm Excitation
Analytical Letters ( IF 2 ) Pub Date : 2019-11-12 , DOI: 10.1080/00032719.2019.1686511
Jinmei Wang 1 , Xiaojuan Li 1 , Peichao Zheng 1 , Shuang Zheng 1 , Xuefeng Mao 1 , Huaidong Zhao 1 , Ranning Liu 1
Affiliation  

Abstract In order to investigate the influence of laser wavelength on the detection of the metals in Artemisia annua, pulsed lasers operating at wavelengths of 1064 nm and 532 nm for laser induced breakdown spectroscopy (LIBS) have been employed to generate the plasma. The spectral lines of Mg (II) at 279.54 nm, CN at 388.29 nm, Ca (II) at 393.37 nm and Fe (II) at 404.27 nm were used to evaluate the optical emission at various delay times for the 532 nm and the 1064 nm laser. The effects of the data acquisition delay time on the line intensity, signal-to-background ratio and the characteristic parameters of laser plasma have been investigated as well. The results show that the 1064 nm beam induced plasmas with higher signal-to-background ratios and temperatures than the 532 nm beam. However, the 532 nm laser beam produced plasma with higher electron densities than the 1064 nm laser beam. In addition, a significant influence has been found: the spectral intensities of the ions were stronger than the spectral intensities of the atoms independent of whether the laser was operated at 532 nm or 1064 nm.

中文翻译:

用 532 nm 和 1064 nm 激发的激光诱导击穿光谱 (LIBS) 表征中药青蒿

摘要 为了研究激光波长对青蒿中金属检测的影响,采用1064 nm和532 nm波长的激光诱导击穿光谱(LIBS)脉冲激光器产生等离子体。Mg (II) 在 279.54 nm、CN 在 388.29 nm、Ca (II) 在 393.37 nm 和 Fe (II) 在 404.27 nm 的光谱线用于评估 532 nm 和 1064 在不同延迟时间的光发射。纳米激光。还研究了数据采集延迟时间对激光等离子体线强度、信背比和特征参数的影响。结果表明,与 532 nm 光束相比,1064 nm 光束诱导的等离子体具有更高的信号背景比和温度。然而,532 nm 激光束产生的等离子体比 1064 nm 激光束具有更高的电子密度。此外,还发现了一个显着影响:离子的光谱强度强于原子的光谱强度,与激光是在 532 nm 还是 1064 nm 下操作无关。
更新日期:2019-11-12
down
wechat
bug