Online calibration of laser-induced breakdown spectroscopy for detection of heavy metals in water

被引：14
作者：
Jia, Yao [1 ,2 ,3 ]
Zhao, Nanjing [1 ,3 ]
Fang, Li [1 ,3 ]
Ma, Mingjun [1 ,2 ,3 ]
Meng, Deshuo [1 ,3 ]
Yin, Gaofang [1 ,3 ]
Liu, Jianguo [1 ,3 ]
Liu, Wenqing [1 ,3 ]
机构：
[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Anhui, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
[3] Key Lab Opt Monitoring Technol Environm, Hefei 230031, Anhui, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2018年 / 20卷 / 09期
关键词：
LIBS; aqueous heavy metals; spectroscopic stability; spectral calibration; full-spectrum sum method; equal-RSD normalization algorithm; LIBS; PARAMETERS; POLLUTION; IONS; COAL;
D O I：
10.1088/2058-6272/aac42f
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
In order to reduce the fluctuation of LIBS detection spectrum of liquid sample, the full-spectrum sum method and the internal standardization method is adopted, using an equal-RSD normalization algorithm to calibrate the detection spectrum. Experiment result shows that the full-spectrum sum method reduced the RSD of parallel samples of Cd and Cr to 9.4% and 11.06% from 28.32% and 31.93% respectively, yielded better overall calibration than the singleelement internal standardization approach, thereby suggesting that the former method is convenient and effective for online calibration of LIBS for detection of aqueous heavy metals.
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页数：6
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