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ISO 7530-7:1992

Nickel alloys — Flame atomic absorption spectrometric analysis — Part 7: Determination of aluminium content

Publication date:   Sep 3, 1992

General information

90.93 Standard confirmed   Jun 5, 2020

ISO

ISO/TC 155 Nickel and nickel alloys

International Standard

77.120.40   Nickel, chromium and their alloys

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Scope

Silicon content can be determined in the range of 0,2 % (m/m) to 1 % (m/m). The principle is dissolution of a test portion in acid, filtration and aspiration of the test solution into a nitrous oxide-acetylene flame of an atomic absorption spectrometer, combustion of the filter, volatilization of silica, fusion of the residue, dissolution of the melt in dilute acid, aspiration of this second solution into another such flame, measurement of the absorbance of the resonance line energy from the spectrum of aluminium and comparison with that of calibration solutions at 309,3 nm.

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PUBLISHED
ISO 7530-7:1992
90.93 Standard confirmed
Jun 5, 2020