ISO 6636-2:1981
Fruits, vegetables and derived products — Determination of zinc content — Part 2: Atomic absorption spectrometric method
Fruits, vegetables and derived products — Determination of zinc content — Part 2: Atomic absorption spectrometric method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 6
- Дата публикации:
- 1 октября 1981 г.
- Издание:
- ISO IS 6636 edition 1 version 1
- ICS:
- 67.080.01
The method consists is decomposing of organic matter by a dry or wet method and determing of the Zn + cation by a suitable spectrometer. For some liquid samples the determination may be carried out directly, without previous decomposition.
Abstract
Overview
ISO 6636-2:1981 - "Fruits, vegetables and derived products - Determination of zinc content - Part 2: Atomic absorption spectrometric method" specifies an atomic absorption spectrometry (AAS) procedure for measuring zinc (Zn2+) in fruits, vegetables and derived food products. The method covers sample preparation (dry ashing or wet digestion), instrument measurement (air–acetylene flame AAS at 213.8 nm) and reporting requirements. For some clear liquid samples (wines, clear juices) direct measurement without prior decomposition is permitted.
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