A mobile fiber-optic laser-induced breakdown spectrometer (FO-LIBS) prototype was developed to rapidly detect a large quantity of steel material online and quantitatively analyze the trace elements in a large-diameter steel tube. Twenty-four standard samples and a polynomial fitting method were used to establish calibration curve models. The R 2 factors of the calibration curves were all above 0.99, except for Cu, indicating the elements’ strong self-absorption effect. Five special steel materials were rapidly detected in the steel mill. The average absolute errors of Mn, Cr, Ni, V, Cu, and Mo in the special steel materials were 0.039, 0.440, 0.033, 0.057, 0.003, and 0.07 wt%, respectively, and their average relative errors fluctuated from 2.9% to 15.7%. The results demonstrated that the performance of this mobile FO-LIBS prototype can be compared with that of most conventional LIBS systems, but the more robust and flexible characteristics of the FO-LIBS protot...

中文翻译：

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使用移动光纤激光诱导击穿光谱系统快速在线分析钢中的痕量元素

开发了移动式光纤激光诱导击穿光谱仪（FO-LIBS）原型，以在线快速检测大量钢材并定量分析大直径钢管中的痕量元素。采用二十四个标准样品和多项式拟合方法建立校正曲线模型。校正曲线的R 2因子除Cu外均大于0.99，表明元素具有很强的自吸收作用。在钢厂中迅速发现了五种特殊钢材。特种钢材中Mn，Cr，Ni，V，Cu和Mo的平均绝对误差分别为0.039、0.440、0.033、0.057、0.003和0.07 wt％，它们的平均相对误差从2.9％波动到2.5％。 15.7％。