This nickel oxide is grown on Ni substrates, and the mass of nickel oxide need to be precisely measured.
So is it possible to measure the mass of this oxide layer ? (Substrate ~0.1g, oxide layer ~2mg)
Or dissolve it thoroughly while prevent the Ni substrates from being corroded?
Thank you~
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Carlos Araújo Queiroz
You can clean (reactively dissolve) the NiO corrosion layer over metallic Ni by immersion in hot diluted acetic acid. From mass difference, prior and after cleaning, you may be able to estimate the mass of oxide removed.
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Cornel Radu
Weight 10 samples at a time to improve precision. In this case you may clean or not clean the oxide layer. A better calculation is possible in both cases.
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