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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 11436:1993

ISO 11436:1993 Nickel and nickel alloys – Determination of total boron content – Curcumin molecular absorption spectrometric method

CDN $129.00

SKU: 9fb4bab7f9c0 Category:

Description

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.

Edition

1

Published Date

1993-08-05

Status

PUBLISHED

Pages

8

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

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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