Analysis of lead in unknown samples based on the standard addition method using laser induced breakdown spectroscopy

• Published in: Guang pu xue yu guang pu fen xi Vol. 35; no. 1; p. 208
• Main Authors: Fang, Li, Zhao, Nan-jing, Meng, De-shuo, Yuan, Jing, Tang, Jie, Wang, Yin, Yu, Yang, Ma, Ming-jun, Hu, Li, Zhang, Da-hai, Xiao, Xue, Wang, Yu, Liu, Jian-guo, Liu, Wen-qing
• Format: Journal Article
• Language: Chinese
• Published: China 01.01.2015
• ISSN: 1000-0593
• DOI: 10.3964/j.issn.1000-0593(2015)01-0208-04

The standard addition method with laser induced breakdown spectroscopy was used to analyze an unknown sample taken from a lead battery factory. the matrix influence on the results was effectively avoided when the external or internal standard method was used, and the pretreatment of samples was simple and quick. The Nd ' YAG pulse laser with wavelength 1 064 nm was used as the excitation source. The echelle spectroscopy with high resolution and wide spectral range was used as the spectral separation device, and the intensified charge coupled device (ICCD) as the spectral detection device in the experiment. The characteristic line at 405. 78 nrn was chosen as the analysis line to measure Pb concentration. Fe I : 404. 58 line was chosen as the internal standard. Pre-experiment was carried out to confirm the appropriate condition. Under the laser energy of 128. 5 mJ, the delay time of 2. 5 tps, and the gate width of 3 ps, it was determined that with the addition of Pb to the sample in the range of 0 and 25 000 m