ISO 12739:2006

Zinc sulfide concentrates — Determination of zinc — Ion-exchange/EDTA titrimetric method

ISO 12739:2006 specifies an ion-exchange/EDTA titrimetric method for the determination of the mass fraction of zinc in zinc concentrates. The method is applicable to zinc sulfide concentrates having a mass fraction of zinc in the range from 11 % to 62 %.

Concentrés sulfurés de zinc — Dosage du zinc — Méthode par échange d'ions et titrage à l'EDTA

General Information

• Status: Published
• Publication Date: 04-Jul-2006
• ICS: 73.060.99 - Other metalliferous minerals
• Technical Committee: ISO/TC 183 - Copper, lead, zinc and nickel ores and concentrates
• Drafting Committee: ISO/TC 183 - Copper, lead, zinc and nickel ores and concentrates
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 24-Nov-2023

Relations

• Consolidated By: ISO 12402-4:2020 - Personal flotation devices — Part 4: Lifejackets, performance level 100 — Safety requirements
• Effective Date: 06-Jun-2022
• Revises: ISO 12739:1997 - Zinc sulfide concentrates — Determination of zinc content — Ion-exchange/EDTA titrimetric method
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 12739
Second edition
2006-07-01
Zinc sulfide concentrates —
Determination of zinc —
Ion-exchange/EDTA titrimetric method
Concentrés sulfurés de zinc — Dosage du zinc — Méthode par échange
d'ions et titrage à l'EDTA

Reference number
ISO 12739:2006(E)
©
ISO 2006

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ISO 12739:2006(E)
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ISO 12739:2006(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Reagents . 1
5 Apparatus . 3
6 Sample . 3
6.1 Test sample . 3
6.2 Test portion . 3
7 Procedure . 3
7.1 Number of determinations . 3
7.2 Blank test . 4
7.3 Dissolution of test portion . 4
7.4 Preparation of the ion-exchange column . 4
7.5 Adsorption of zinc on ion-exchange column . 5
7.6 Elution of zinc from ion-exchange column . 5
7.7 Titration . 5
7.8 Determination of the titration factor of the EDTA standard volumetric solution . 5
8 Expression of results . 6
9 Precision . 7
9.1 Expression of precision . 7
9.2 Procedure for obtaining the final result .
...