Laser-induced breakdown spectroscopy detection of heavy metal in water based on graphite conch method

Chunlong Wang; Jianguo Liu; Nanjing Zhao; Huan Shi; Lituo Liu; Mingjun Ma; Wei Zhang; Dong Chen; Jing Liu; Yujun Zhang; Wenqing Liu

doi:10.1117/12.975821

15 October 2012 Laser-induced breakdown spectroscopy detection of heavy metal in water based on graphite conch method

Chunlong Wang, Jianguo Liu, Nanjing Zhao, Huan Shi, Lituo Liu, Mingjun Ma, Wei Zhang, Dong Chen, Jing Liu, Yujun Zhang, Wenqing Liu

Author Affiliations +

Proceedings Volume 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 84171G (2012) https://doi.org/10.1117/12.975821
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

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.

Citation Download Citation

Chunlong Wang, Jianguo Liu, Nanjing Zhao, Huan Shi, Lituo Liu, Mingjun Ma, Wei Zhang, Dong Chen, Jing Liu, Yujun Zhang, and Wenqing Liu "Laser-induced breakdown spectroscopy detection of heavy metal in water based on graphite conch method", Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84171G (15 October 2012); https://doi.org/10.1117/12.975821

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