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ISO 10697-2:1994

Steel — Determination of calcium content by flame atomic absorption spectrometry — Part 2: Determination of total calcium content

Feb 3, 1994

General information

90.93     Jan 15, 2023

ISO

ISO/TC 17/SC 1

International Standard

77.080.20  

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Scope

The principle of the method specified is dissolving a test portion in hydrochloric and nitric acids, fusing the acid-insoluble residue with sodium carbonate, adding potassium chloride/lanthanum nitrate solution as a spectrochemical buffer, spraying the solution into a dinitrogen monoxide-acetylen flame, and spectrometrically measuring the atomic absorption of the 422,7 nm spectral line emitted by a calcium hollow cathode lamp. The method is applicable to calcium contents betwen 0,0005 % (m/m) and 0,005 % (m/m).

Life cycle

NOW

PUBLISHED
ISO 10697-2:1994
90.93 Standard confirmed
Jan 15, 2023