Direct inductively coupled plasma optical emission spectrometry for analysis of waste samarium-cobalt magnets

Arabian Journal of Chemistry

Vasilisa B. Baranovskaya¹  Kseniya V. Petrova²  Natalya A. Korotkova³ 

[1]Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences (IGIC RAS), Moscow, Russia

[2]Corresponding author at: Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Leninsky Prospekt, 31, Russia.

[3]Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences (IGIC RAS), Moscow, Russia

关键词: Samarium;    Cobalt;    Magnets;    ICP-OES;    Waste;   

DOI  :  

来源: DOAJ

【 摘 要 】

An analytical procedure for direct determination of Al, Mg, Ti, Cr, Mn, Nb, La, Nd, Eu, Gd, Tb, Dy, Tm, Yb, Lu, Hf, Ni, Cu, Fe, Zr Sm and Co by ICP-OES in waste samarium-cobalt magnets has been developed. The significant influence of the matrix on all determinable components has been shown. The influence of operation parameters (ICP power and nebuliser flow rate) on the matrix effect has been studied using two plasma observation modes (axial and radial). For the first time, the optimal conditions for ICP-OES analysis of waste samarium-cobalt magnets has been substantiated (ICP power 1400 W, nebuliser flow rate 0.5–0.6 L/min). The analytical capabilities of the method have been evaluated using spike recovery test, certified reference materials and comparison with ICP-MS. ICP-OES measurements were performed in the axial mode for trace elements (with concentrations of n·10−4-n·10−2 % wt.) and in the radial mode for matrix elements and analytes (with concentrations higher than n·10−2 % wt.). The limits of quantification (LOQs) were in the range of n·10−5 wt% for Mn, Zr and Yb and n·10−4 wt% for Al, Mg, Ti, Cr, Hf, La, Ni, Cu, Tb, Lu, Nb, Fe, Nd, Eu, Gd, Dy and Tm. RSD ranged from 0.2 to 10.6%.

【 授权许可】

Unknown