ISO 3946:1982
ISO 3946:1982 Starches and derived products – Determination of total phosphorus content – Spectrophotometric method
CDN $86.00
Description
Destruction of the organic substances by digestion with a sulpho-nitric mixture and conversion of phosphates to orthophosphates. Formation of a phosphomolybdate. Measurement of the intensity of the blue colour at a wavelength of 825 nm. The method applies to contents up to 5 % (m/m).
Edition
1
Published Date
1982-12-01
Status
PUBLISHED
Pages
3
Language
English
Format
Secure PDF
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Abstract
Destruction of the organic substances by digestion with a sulpho-nitric mixture and conversion of phosphates to orthophosphates. Formation of a phosphomolybdate. Measurement of the intensity of the blue colour at a wavelength of 825 nm. The method applies to contents up to 5 % (m/m).
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