Microanalysis of silver jewellery by laser-ablation laser-induced breakdown spectroscopy with enhanced sensitivity and minimal sample ablation

Junyu Mo; Yuqi Chen; Runhua Li; Qi Zhou; Yang Lou

doi:doi:10.3788/col201412.083001

Chinese Optics Letters, 2014, 12 (8): 083001, Published Online: Jul. 31, 2014

Microanalysis of silver jewellery by laser-ablation laser-induced breakdown spectroscopy with enhanced sensitivity and minimal sample ablation Download： 573次

论文大纲

Junyu Mo Yuqi Chen Runhua Li Qi Zhou Yang Lou

Author Affiliations

300.6365 Spectroscopy, laser induced breakdown 300.6210 Spectroscopy, atomic 300.6190 Spectrometers

Abstract

Laser-ablation laser-induced breakdown spectroscopy (LA-LIBS) based on single Nd:YAG laser is used to analyze copper impurity in silver jewellery with enhanced sensitivity and minimal sample ablation. 6-30 folds signal enhancement can be achieved under the re-excitation of the breakdown laser and the spatial resolution is only determined by the ablation laser. 50 ppm limit of detection of copper is achieved when the crater diameter is 17.2 \mu m under current experimental condition. This technique gives higher analysis sensitivity under the same sample ablation in comparison with single pulse (SP) LIBS. It is useful for high sensitive element microanalysis of precious samples.

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Junyu Mo, Yuqi Chen, Runhua Li, Qi Zhou, Yang Lou. Microanalysis of silver jewellery by laser-ablation laser-induced breakdown spectroscopy with enhanced sensitivity and minimal sample ablation[J]. Chinese Optics Letters, 2014, 12(8): 083001.

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