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Proceedings Paper

Laser-induced breakdown spectroscopy detection of heavy metal in water based on graphite conch method
Author(s): Chunlong Wang; Jianguo Liu; Nanjing Zhao; Huan Shi; Lituo Liu; Mingjun Ma; Wei Zhang; Dong Chen; Jing Liu; Yujun Zhang; Wenqing Liu
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Paper Abstract

The laser-induced breakdown spectroscopy emission characteristics of trace heavy metal lead in water is studied based on graphite conch method, with a 1064nm wavelength Nd: YAG laser as excitation source, the echelle spectrometer and ICCD detector are used for spectral separation and high sensitive detection with high resolution and wide spectral range. The delay time 900ns and gate time 1600ns are determined in the experiment. The calibration curve of Pb is plotted based on the different concentration measurement results, and a limit of detection of 0.0138mg / L is obtained for Pb in water. Graphite conch method effectively overcomes the current problems on laser-induced breakdown spectroscopy detection of heavy metal in water. The detection limits and stability are improved. The reference data is provided for further study on the fast measurement of trace heavy metals in water by laser induced breakdown spectroscopy technique.

Paper Details

Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84171G (15 October 2012); doi: 10.1117/12.975821
Show Author Affiliations
Chunlong Wang, Anhui Institute of Optics and Fine Mechanics (China)
Jianguo Liu, Anhui Institute of Optics and Fine Mechanics (China)
Nanjing Zhao, Anhui Institute of Optics and Fine Mechanics (China)
Huan Shi, Anhui Institute of Optics and Fine Mechanics (China)
Lituo Liu, Anhui Institute of Optics and Fine Mechanics (China)
Mingjun Ma, Anhui Institute of Optics and Fine Mechanics (China)
Wei Zhang, Anhui Institute of Optics and Fine Mechanics (China)
Dong Chen, Anhui Institute of Optics and Fine Mechanics (China)
Jing Liu, Anhui Institute of Optics and Fine Mechanics (China)
Yujun Zhang, Anhui Institute of Optics and Fine Mechanics (China)
Wenqing Liu, Anhui Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 8417:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Libin Xiang; Sandy To, Editor(s)

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