Steel -- Determination of calcium content by flame atomic absorption spectrometry -- Part 2: Determination of total calcium content
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).
| SDO | ISO: International Organization for Standardization |
| Document Number | ISO 10697 |
| Publication Date | Not Available |
| Language | en - English |
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| Supercedes | |
| Committee | ISO TC 17/SC 1 |
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