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

ISO-6636-1 - 1ST EDITION - CURRENT


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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.

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67.080.01 (Fruits, vegetables and derived products in general)

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Document Number

ISO 6636-1:1986

Revision Level

1ST EDITION

Status

Current

Publication Date

April 15, 1986

Committee Number

ISO TC 34/SC 3