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ISO 11436:1993

ISO 11436:1993

$19.50

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

Published By Publication Date Number of Pages
ISO 1993-08 11
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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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