吸附
吸附剂
钐
钴
萃取(化学)
等离子体原子发射光谱
感应耦合等离子体
材料科学
检出限
分析化学(期刊)
杂质
化学
吸附
核化学
无机化学
色谱法
冶金
有机化学
物理
等离子体
量子力学
作者
A. A. Arkhipenko,K. V. Petrova,V. B. Baranovskaya
出处
期刊:Molecules
[MDPI AG]
日期:2022-08-18
卷期号:27 (16): 5275-5275
标识
DOI:10.3390/molecules27165275
摘要
We developed a method of sorption determination via the atomic emission of Cu, Zr and Hf metals in the waste of samarium-cobalt magnets. This method was based on the preconcentration of impurities using S- and N-containing heterochain sorbents, with further determination of the analytes via inductively coupled plasma atomic emission spectrometry (ICP-OES). Different sorbents such as PED (polyethelendiamine), TDA (polythiodimethanamine), PhED (N-phenylpolyethediamine) and PTE (polythioether) were tested for Ti, Cu, Zr, Nb and Hf extraction. The PTE sorbent ensured the maximum extraction of the analytes (recovery 60% for Ti, 80% for Nb, 95-100% for Cu, Zr and Hf) and thus was selected for further research. Additionally, various acidities of chloride solution (0.01-1 M HCl) were investigated for metal sorption. Under the optimised sorption conditions, trace impurities of Cu, Zr and Hf were determined using ICP-OES with a relative standard deviation of less than 5%. The obtained results were confirmed by the added-found method and cross-method experiments. The detection limits (DLs) were 1.5, 2, 0.15, 2 and 0.75 µg/L for Ti, Cu, Zr, Nb and Hf, respectively. The proposed method can be successfully used for the determination of various microelements in other waste REE-magnetic materials.
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