Progress in the detection of iron ore by laser-induced breakdown spectroscopy
YANG Ya-wen1,2, YAN Cheng-lin1, XU Ding1, MIN Hong1, YANG Min-li2, LIU Shu*1
1. Technical Center for Industrial Product and Raw Material Inspection and Testing, Shanghai Customs, Shanghai200135, China; 2. College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200214, China
Abstract：Laser-induced breakdown spectroscopy is a kind of atomic emission spectroscopy, which exhibits a couple of attractive features, such as real time ananlysis, in situ, mirco btrakdown, remote detection and simultaneous mutil-elements analysis. Thus it has attracted more and more attention in the field of iron ore detection. Due to laser energy flucations, matrix effects, and the mapping of the sample surface, it still has many issues in both qualitative and quantitative analysis of iron ore for LIBS. As a data processing method, chemometrics could filter noise, extract effective spectral information, and connect spectra and analysis results. As a result, it is a bridge to connect LIBS analysis and testing. In the past 10 years, the application of LIBS in iron ore detection has gradually gained attention. LIBS could be used to identify the acidity and alkalinity of iron ore, and could also be used to analyze the origin of iron ore. For the quantitative analysis of total iron, calcium, magnesium, silicon, aluminum, potassium, phosphorus and loss on ignition in iron ore, LIBS combined with multivariate regression has carried out a lot of exploratory work, but it is still immature in industrial application. Therefore, how to promote the application of LIBS in the field of iron ore detection is still a major challenge.
杨雅雯, 严承琳, 徐鼎, 闵红, 杨敏丽, 刘曙. 激光诱导击穿光谱检测铁矿石应用进展[J]. 冶金分析, 2020, 40(12): 14-20.
YANG Ya-wen, YAN Cheng-lin, XU Ding, MIN Hong, YANG Min-li, LIU Shu. Progress in the detection of iron ore by laser-induced breakdown spectroscopy. , 2020, 40(12): 14-20.
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