利用 LIBS 结合校准曲线和 PLSR 方法检测铜渣中的铝、镁、钙和锌

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-11-28 DOI:10.1088/2058-6272/ad1045

Junwei Jia, Zhifeng Liu, Congyuan Pan, Huaqin Xue

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引用次数: 0

摘要

精确测量铜渣中的铝、镁、钙和锌成分对于有效控制铜火法冶金过程至关重要。本研究利用远程激光诱导击穿光谱（LIBS）系统在 2.5 米的距离内对铜渣样品进行光谱分析，然后使用校准曲线（CC）法和基于特征光谱强度比的偏最小二乘回归（PLSR）分析法分析铜渣的成分。两种分析方法的性能通过测定系数 (R2)、平均相对误差 (ARE)、校准均方根误差 (RMSEC) 和预测均方根误差 (RMSEP) 来衡量。结果表明，与 CC 方法相比，PLSR 方法显著提高了校准集和测试集的 R2，同时将 ARE、RMSEC 和 RMSEP 降低了 50%。结果表明，LIBS 与 PLSR 的结合是有效检测铜渣中元素浓度的可行方法，具有在线检测高温熔融铜渣元素组成的潜力。

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Detection of Al, Mg, Ca, and Zn in copper slag by LIBS combined with calibration curve and PLSR methods

The precise measurement of Al, Mg, Ca, and Zn composition in copper slag is crucial for effective process control of copper pyrometallurgy. In this study, a remote laser-induced breakdown spectroscopy (LIBS) system was utilized for the spectral analysis of copper slag samples at a distance of 2.5 m. The composition of copper slag was then analyzed using both the calibration curve (CC) method and the partial least squares regression (PLSR) analysis method based on the characteristic spectral intensity ratio. The performance of the two analysis methods was gauged through the determination coefficient (R2), average relative error (ARE), root mean square error of calibration (RMSEC), and root mean square error of prediction (RMSEP). The results demonstrate that the PLSR method significantly improved both R2 for the calibration and test sets while reducing ARE, RMSEC, and RMSEP by 50% compared to the CC method. The results suggest that the combination of LIBS and PLSR is a viable approach for effectively detecting the elemental concentration in copper slag and holds potential for online detection of the elemental composition of high-temperature molten copper slag.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.