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SSH ISO 11436:1993

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

May 9, 2017

General information

60.60     Feb 7, 2017

DPS

DPS/KT 133

International Standard

77.120.40  

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Scope

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.

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SSH ISO 11436:1993
60.60 Standard published
Feb 7, 2017

Related project

Adopted from ISO 11436:1993