ISO 7100:1983 PDF
Phosphoric acid for industrial use (including foodstuffs) — Determination of vanadium content — Phosphotungsten vanadate spectrometric method
Название (английский):
ISO 7100:1983
Phosphoric acid for industrial use (including foodstuffs) — Determination of vanadium content — Phosphotungsten vanadate spectrometric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 июня 1983 г.
- Издание:
- ISO IS 7100 edition 1 version 1
- ICS:
- 67.220.20
Описание (английский):
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.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 7100:1983