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

Yao JIA (贾尧); Nanjing ZHAO (赵南京); Li FANG (方丽); Mingjun MA (马明俊); Deshuo MENG (孟德硕); Gaofang YIN (殷高方); Jianguo LIU (刘建国); Wenqing LIU (刘文清)

doi:10.1088/2058-6272/aac42f

Plasma Science and Technology > 2018 > 20(9): 95503-095503. > DOI: 10.1088/2058-6272/aac42f

Yao JIA (贾尧), Nanjing ZHAO (赵南京), Li FANG (方丽), Mingjun MA (马明俊), Deshuo MENG (孟德硕), Gaofang YIN (殷高方), Jianguo LIU (刘建国), Wenqing LIU (刘文清). Online calibration of laser-induced breakdown spectroscopy for detection of heavy metals in water[J]. Plasma Science and Technology, 2018, 20(9): 95503-095503. DOI: 10.1088/2058-6272/aac42f

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

1 Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 2 University of Science and Technology of China, Hefei 230026, People’s Republic of China 3 Key Laboratory of Optical Monitoring Technology for Environment, Hefei 230031, People’s Republic of China

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Received Date: March 12, 2018

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Abstract

Abstract

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 single- element internal standardization approach, thereby suggesting that the former method is convenient and effective for online calibration of LIBS for detection of aqueous heavy metals.
- LIBS,
- aqueous heavy metals,
- spectroscopic stability,
- spectral calibration,
- full- spectrum sum method,
- equal-RSD normalization algorithm

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References (23)

References

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