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Proceedings Paper

A novel approach for LIBS enhancement of cations underwater
Author(s): Yuan Lu; Ying Li; Jiang-lai Wu; Shi-lei Zhong; Rong-er Zheng
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Paper Abstract

Laser Induced Breakdown Spectroscopy (LIBS) has been developing as a promising technique with many advantages, including on-line, real time, stand off and multi-element detection etc. At present, LIBS application has involved many areas; more and more researchers have studied LIBS as an in-situ measurement for oceanic sensing. In this paper, a novel approach for LIBS enhancement has been introduced and used to improve the sensitivity of underwater detection. In this approach, the replacement reaction assisted with the electric field was utilized to strengthen the reaction and increase local cations concentration for depositing on the underlay surface. With the aid of replacement reaction and electric field, the LIBS sensitivity for cations detection underwater was found to be enhanced significantly, hence the detection limit. The detection limit of 16 ppb was achieved for copper cations (Cu2+) detection in the water solution of CuSO4. The obtained results suggested that this novel approach has great potential to be developed as an effective method for cations detection underwater.

Paper Details

Date Published: 31 August 2009
PDF: 7 pages
Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73823U (31 August 2009); doi: 10.1117/12.836299
Show Author Affiliations
Yuan Lu, Ocean Univ. of China (China)
Ying Li, Ocean Univ. of China (China)
Jiang-lai Wu, Ocean Univ. of China (China)
Shi-lei Zhong, Ocean Univ. of China (China)
Rong-er Zheng, Ocean Univ. of China (China)

Published in SPIE Proceedings Vol. 7382:
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging
Farzin Amzajerdian; Chun-qing Gao; Tian-yu Xie, Editor(s)

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