Determination of Nickel, Zinc and Cobalt in Advanced MaterialsBased on NixCo3 –xO4and ZnxCo3 –xO4 by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and X-Ray Fluorescenceстатья
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Дата последнего поиска статьи во внешних источниках: 15 апреля 2020 г.
Аннотация:An approach to analysis of advanced sensor materials based on cobalt oxide modified with zinc or
nickel oxides is developed using X-ray fluorescenceanalysis (XRF) and inductively coupled plasma mass
spectrometry (ICP-MS). It is shown that determination of Ni, Zn, and Co in novel materials based on cobalt
oxide using ICP-MS in solutions is possible, the standard deviation being 0.06, 0.06, and 0.05, respectively.
The results of the ICP-MS determination of the elements in solutions are used to certify the results obtained
by the XRF method without sample preparation. It is shown that NixCo3 –xO4 – δ samples can be correctly
analyzed without decomposition using X-ray fluorescence analysis. The results of the determination match
theoretically calculated values for the samples obtained both from nitrates and from oxalates of nickel and
cobalt. However, calibration based on the ICP-MS results is necessary for X-ray fluorescence analysis of
ZnxCo3 –xO4samples. It is shown that the zinc content in the samples exceeds the theoretical determined
value by 10–30% because of incomplete precipitation of cobalt from the solution upon synthesis.