ISO 6636-1:1986
Fruits, vegetables and derived products; Determination of zinc content; Part 1 : Polarographic method

Standard No.

ISO 6636-1:1986

Release Date

1986

Published By

International Organization for Standardization (ISO)

Latest

ISO 6636-1:1986

Scope

The method consists in ashing of a test portion in a muffle furnace at 525+25 C, treating the ash obtained with hydrochloric acid, neutralizing with ammonia solution and determing of the value using an ammonia/ammonium chloride electrolyte. Copper, tin, lead and cadmium do not interfere.

ISO 6636-1:1986 history

• 1986 ISO 6636-1:1986 Fruits, vegetables and derived products; Determination of zinc content; Part 1 : Polarographic method