紫外-可见光谱分析技术在稀土料液在线检测领域的应用  

The Application of Ultraviolet-Visible Spectroscopy in the Field of Online Determination of Rare Earth Solutions

作　　者：刘亮余 王艳良 Liu Liangyu;Wang yanliang(Fujian Golden Dragon Rare-Earth Co.,Ltd.,Longyan 366399,Fujian;Fujian Shanhai Collaborative Innovation Center of Rare-earth Functional Materials,Longyan 366300,Fujian;Fujian Key Laboralory of Rare-earth Functional Materials,Longyan 366300,Fujian)

机构地区：[1]福建省金龙稀土股份有限公司,福建龙岩366300 [2]福建省稀土功能材料山海协作创新中心,福建龙岩366300 [3]福建省稀土功能材料重点实验室,福建龙岩366300

出　　处：《福建冶金》2025年第3期41-44,共4页Fujian Metallurgy

摘　　要：本文探讨了紫外-可见光谱分析技术在稀土料液在线检测中的应用,对于提升稀土资源开发效率和利用水平具有极为重要的意义。紫外-可见光谱分析技术基于分子中电子能级跃迁的原理,能够有效研究分子结构、化学键以及电子态等性质。该技术利用紫外-可见光波段(180 nm~1100 nm),可快速、无损地检测稀土料液的成分。在本研究中,该技术成功应用于稀土开采和分离等领域,部分稀土离子的检出限低至0.03 mol/L,且溶液浓度与吸光度在0.03 mol/L~2.5 mol/L范围内呈现出显著的线性关系(R2>0.99)。对于高浓度稀土溶液,其检测结果与电感耦合等离子体发射光谱法一致,平均误差低于3%。The application of ultraviolet-visible(UV-Vis)spectroscopy in the online determination of rare earth solutions has been investigated,which is significant for improving the efficiency and utilization of rare earth resources.UV-Vis spectroscopy,based on the principle of electronic transitions in molecules,is suitable for studying molecular structures,chemical bonds,and electronic states.Utilizing the UV-Vis wavelength range(180 nm~1100 nm),the technique can rapidly and non-destructively analyze the components of rare earth solutions.In this study,it was successfully applied in the fields of rare earth mining and separation,with a determination limit as low as 0.03 mol/L for some rare earth ions.Significant linear relationships(R²>0.99)were observed between solution concentration and absorbance in the range of 0.03 mol/L~2.5 mol/L.For high-concentration rare earth solutions,the determination results were highly consistent with those obtained by Inductively Coupled Plasma-Optical Emission Spectroscopy(ICP-OES),with an average error of<3%.

关 键 词：紫外-可见光谱分析 稀土料液 在线检测 

分 类 号：O657.3[理学—分析化学]