Abstract:The analytical precision of laser induced breakdown spectrometry (LIBS) was influenced by severe signal fluctuation, strong continuous emission interference complex spectrum, laser energy fluctuation and bad repeatability. In this study, based on the selfdeveloped laser spectrometer, the spatial resolution and data stabilization was taken in to account with laser beam adjusting technique; the analytical sensitivity and lower limit of detection was improved with gating integration techniques; the reliability of data was improved by data screening technology. Thus, the analytical precision of LIBS was enhanced. Fifteen elements including C, Si, Mn, P, S, B, Mo, Ni, Cr, V, Cu, Ti, Al, W and Fe in amiddlelow alloy steel were determined by LIBS. Except for P and B, the relative standard deviations of determination results were all less than 10 %. The analytical precision was better than those of LIBS reported in references.
袁良经,石小溪,连志强,张胜坤. 激光诱导击穿光谱法分析精度提高的研究[J]. 冶金分析, 2012, 32(02): 1-5.
YUAN Liangjing, SHI Xiaoxi, LIAN Zhiqiang, ZHANG Shengkun. Study on the improvement of analysis precision for laser induced breakdown spectrometry. , 2012, 32(02): 1-5.