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ISO 11436:1993

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

Standard Details

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
Standard Type: Main
Document No: ISO 11436:1993
Document Year: 1993
Pages: 8
Edition: 1
  • ICS:
  • 77.120.40 Nickel, chromium and their alloys

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ISO 11436:1993
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