ISO 5522:1981
ISO 5522:1981 Fruits, vegetables and derived products – Determination of total sulphur dioxide content
CDN $129.00
Description
The method consists in acidifying and heating a test portion, entraining, in a current of nitrogen, the gas liberated, absorbing and oxidizing the gas by bubbling it through a neutral, dilute hydrogen peroxide solution, then determining the sulphuric acid thus formed using standard volumetric sodium hydroxide solution. Verification of the determination is described in the annexes A and B, respectively.
Edition
1
Published Date
1981-09-01
Status
PUBLISHED
Pages
7
Language
English
Format
Secure PDF
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Abstract
The method consists in acidifying and heating a test portion, entraining, in a current of nitrogen, the gas liberated, absorbing and oxidizing the gas by bubbling it through a neutral, dilute hydrogen peroxide solution, then determining the sulphuric acid thus formed using standard volumetric sodium hydroxide solution. Verification of the determination is described in the annexes A and B, respectively.
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