GB/T 4372.7-2014 Methods for chemical analysis of zinc oxide produced by direct process—Part 7:Determinantion of ferric oxide content—Flame atomic absorption spectrometry method
Methods for chemical analysis of zinc oxide produced by direct process—Part 7:Determinantion of ferric oxide content—Flame atomic absorption spectrometry method
Methods for chemical analysis of zinc oxide produced by direct process -
Part 7: Determination of ferric oxide content - Flame atomic absorption spectrometry method
1 Scope
This part of GB/T 4372 specifies the methods for determining the ferric oxide content of zinc oxide produced by direct process.
This part is applicable to the determination of ferric oxide content of zinc oxide produced by direct process, with a determination range of 0.010%~0.10%.
2 Method summary
Dissolve the specimen with hydrochloric acid and nitric acid, evaporate it and then apply air-acetylene flame in dilute hydrochloric acid medium, and measure the absorbance of iron at the wavelength of 248.3 nm of the atomic absorption spectrophotometer, and then calculate the ferric oxide content by the standard curve method.
