Element Detection by Single-Shot Laser-Induced Breakdown Spectroscopy of Lead
LU Yin-fei1，JIN Xin1, ZHANG Gui-zhong1，2，YAO Jian-quan1，2
1. College of Precision Instrument and Optoelectronics Engineering，Tianjin University，Tianjin 300072, China 2. Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education，Tianjin University，Tianjin 300072，China
Abstract：Single-shot laser induced breakdown spectroscopy (single-shot LIBS) has become one of the most important branches of material detection. The present article mainly focuses on analysis of the emission spectra of lead by quantitative methods. In the experiment, both qualitative and quantitative analysis are made to detect the content of lead in different material using single-shot LIBS with Q-switched Nd:YAG lasers whose pulse width is 10ns. In quantitative analysis, detections of the emission lines of pure lead with different pulse energies: 107, 139.2 and 171.5 mJ and different wavelengths: 1 064, 532 and 1 064/532 nm are made. Spectra under three conditions (1: same wavelengths and different pulse energies for single pulse lasers; 2: same pulse energy and different wavelength for single pulse lasers and 3: same wavelengths and different pulse energies for double pulse lasers) are acquired and compared.
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