ISO 11436:1993 Preview

Nickel and nickel alloys -- Determination of total boron content -- Curcumin molecular absorption spectrometric method

The principle of the method specified is dissolving a test portion in hydrochloric and nitric acids, decomposing resistant boron compounds (e.g. boron nitrides) by fuming the sample solution with phosphoric and sulfuric acids at not less than 290 °C, forming the boron curcumin complex in a buffered acetic acid and sulfuric acid medium, and measuring the absorbance of the test solution in a molecular absorption spectrometer at 543 nm. Applies to nickel and nickel alloys having a total boron content in the range of 4 g/t to 240 g/t.


General information

  • Status :  Published
    Publication date : 1993-08
  • Edition : 1
    Number of pages : 8
  • :
    ISO/TC 155
    Nickel and nickel alloys
  • 77.120.40
    Nickel, chromium and their alloys

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  • Now confirmed
    ISO 11436:1993

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