International Standard
ISO 11436:1993
Nickel and nickel alloys — Determination of total boron content — Curcumin molecular absorption spectrometric method
Reference number
ISO 11436:1993
ISO 11436:1993
Edition 1
1993-08
1993-08
© ISO 2024
International Standard
p
ISO 11436:1993
19376
Published
(Edition 1, 1993)
This standard was last reviewed and confirmed in 2020.
Therefore this version remains current.
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.
General information
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Status: PublishedPublication date: 1993-08Stage: International Standard confirmed [90.93]
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Edition: 1Number of pages: 8
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Technical Committee :ISO/TC 155ICS :77.120.40
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