ISO 15247:2015 PDF

Name: ISO 15247:2015 — Zinc sulfide concentrates — Determination of silver content — Acid dissolution and flame atomic absorption spectrometric method
SKU: ISO 15247:2015
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Zinc sulfide concentrates — Determination of silver content — Acid dissolution and flame atomic absorption spectrometric method

Название (английский):

ISO 15247:2015

Zinc sulfide concentrates — Determination of silver content — Acid dissolution and flame atomic absorption spectrometric method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 19
Дата публикации:: 15 июня 2015 г.
Издание:: ISO IS 15247 edition 2 version 1
ICS:: 73.060.99

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Описание (английский):

ISO 15247:2015 specifies an acid dissolution and flame atomic absorption spectrometric method for the determination of silver content of zinc sulfide concentrates. The method is applicable to the determination of silver in zinc sulfide concentrates containing up to 60 % (m/m) zinc in the form of zinc blende and related materials. The method is applicable to silver contents from 10 g/t to 500 g/t.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 15247:2015 specifies an analytical procedure for the determination of silver content in zinc sulfide concentrates by acid dissolution followed by flame atomic absorption spectrometry (FAAS). The method applies to zinc sulfide concentrates (zinc blende and related materials) containing up to 60 % (m/m) zinc and to silver concentrations in the range 10 g/t to 500 g/t. It covers sample preparation, reagent and apparatus requirements, calibration, measurement conditions and expression of results.

Key topics and technical requirements

Sample preparation

Test-sample preparation in accordance with ISO 9599 or use of predried test portions (Annex A).
Representative test portions (≈1 g) and parallel determination of hygroscopic moisture.

Acid decomposition

Decomposition of sample using nitric acid and hydrochloric acid, with prescribed evaporation and re-dissolution steps.
Emphasis on glassware cleaning (ammonia rinse) to avoid silver contamination.

Reagents and standards

Use of analytical-grade reagents and Grade 2 water (ISO 3696).
Preparation of silver primary and working standard solutions and calibration solutions in hydrochloric acid matrix.

Instrumental measurement (FAAS)

Measurement by flame atomic absorption spectrometry at 328.1 nm (air–acetylene flame recommended).
Example instrument settings provided (lamp current 5 mA, integration and aspiration guidance); calibration with multiple standards and replicate readings.

Quality control and reporting

Mandatory blank tests, duplicate determinations (minimum duplicate), and calibration checks.
Expression of results in g/t with correction for hygroscopic moisture.
Precision and repeatability expressed through formal statistical equations and limits (see Clause 9 and Annex C).

Safety & handling

Controlled heating to avoid splattering; standard laboratory safety for strong acids.

Practical applications and users

ISO 15247:2015 is intended for:

Mining and mineral processing laboratories performing assay and grade control of zinc sulfide concentrates.

Metallurgical and analytical service laboratories conducting silver quantification for commercial settlement, process monitoring and certification.

Quality assurance teams and regulators requiring a standardized FAAS-based method for consistent, traceable silver determinations.

Benefits:

Enables reproducible, comparable results across laboratories.

Supports commercial transactions (concentrate valuation), process optimization and compliance testing.

Related standards

ISO 9599 - preparation and hygroscopic moisture determination for concentrates

ISO 3696 - water for laboratory use

ISO 385, ISO 648, ISO 1042, ISO 4787 - volumetric glassware and laboratory apparatus specifications

Keywords: ISO 15247:2015, zinc sulfide concentrates, silver determination, acid dissolution, flame atomic absorption spectrometry, FAAS, assay method, concentrate analysis, analytical standard.

ISO 15247:2015 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Технические детали

SIST ISO 9599:2016

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BS EN ISO 385:2005

Laboratory glassware. Burettes.

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