Abstract Preview

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).


General information

  • Status :  Published
    Publication date : 1994-02
  • Edition : 1
    Number of pages : 10
  • :
    ISO/TC 17/SC 1
    Methods of determination of chemical composition
  • 77.080.20
    Steels

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