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ISO 10697-2:1994 PDF
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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).
| Edition | 1994 |
|---|---|
| Standard Part No | 2 |
| Published Date | 1994 |
| Published By | International Standardization Organisation |
| Page Count | 10 |
