ISO 7100:1983 PDF
Phosphoric acid for industrial use (including foodstuffs) — Determination of vanadium content — Phosphotungsten vanadate spectrometric method
Open preview (PDF)Phosphoric acid for industrial use (including foodstuffs) — Determination of vanadium content — Phosphotungsten vanadate spectrometric methodTitle (English):
ISO 7100:1983
Phosphoric acid for industrial use (including foodstuffs) — Determination of vanadium content — Phosphotungsten vanadate spectrometric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- June 1, 1983
- Edition:
- ISO IS 7100 edition 1 version 1
- ICS:
- 67.220.20
Description (English):
A yellow complex is formed by reaction of the vanadium present in a test portion with phosphoric acid and sodium tungstate in acid medium. The spectrometric measurement of the absorbance is carried out at a wavelength of about 425 nm. The method is applicable to products having a vanadium content equal to or greater than 3 mg/kg.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 7100:1983
