ISO 10697-2:1994

Current Revision
Steel -- Determination of calcium content by flame atomic absorption spectrometry -- Part 2: Determination of total calcium content

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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

PUBLISH DATE 1994
ISO 10697-2:1994

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-acetylene 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 between 0.0005 % (m/m) and 0.005 % (m/m).

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