| Autor: |
Cruz KAML; Group of Analysis and Education for Sustainability (GAES), Chemistry Department, Centre of Exact and Technology Sciences, Federal University of Viçosa (UFV), Av. P. H. Rolfs, s/n, Viçosa, MG, 36570-900, Brazil. mariacarmo@ufv.br., Donati GL; Department of Chemistry, Wake Forest University, Salem Hall, Box 7486, Winston-Salem, NC 21709, USA., Rocha FRP; Center of Nuclear Energy in Agriculture, University of Sao Paulo, Av. Centenário, 303, 13416-000 Piracicaba, SP, Brazil., Hespanhol MC; Group of Analysis and Education for Sustainability (GAES), Chemistry Department, Centre of Exact and Technology Sciences, Federal University of Viçosa (UFV), Av. P. H. Rolfs, s/n, Viçosa, MG, 36570-900, Brazil. mariacarmo@ufv.br. |
| Jazyk: |
angličtina |
| Zdroj: |
Analytical methods : advancing methods and applications [Anal Methods] 2023 Aug 03; Vol. 15 (30), pp. 3675-3682. Date of Electronic Publication: 2023 Aug 03. |
| DOI: |
10.1039/d3ay01035j |
| Abstrakt: |
Nickel-metal hydride batteries (NiMH) are a secondary source of high aggregate value elements, such as nickel, manganese, cobalt, and rare earths, for which recycling typically involves acid lixiviation. Designing the recycling process requires accurate determination of the elements in the leachates, which is hindered by the high complexity of the matrix. In the present study, microwave-induced plasma atomic emission spectrometry (MIP-OES) was selected as the quantitative method for elemental analysis because of its environment friendliness and cost-effectiveness. Multi-energy calibration (MEC) was also pioneeringly evaluated to circumvent matrix effects and simplify the determination of Ce, La, Ni, Co, and Mn in sulfuric acid leachates of NiMH batteries by MIP-OES. The method's analytical performance and accuracy were critically compared with external standard calibration and the standard additions method. MEC yielded superior results, with analyte recoveries within 90-110%, precision (coefficients of variation) from 1.8% to 5.8%, and limits of detection of 10, 20, 1, 400, and 60 μg kg -1 for Ni, La, Mn, Ce, and Co, respectively. The results demonstrated the ability of MEC-MIP-OES to minimize matrix effects, as well as simplify and speed up the analysis of NiMH battery leachates, which is compatible with this high-demand analytical application. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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