Copper, lead and zinc sulfide concentrates - Chemical analysis Determination of gold and silver - Fire assay gravimetric and flame atomic absorption spectrometric method
Standards Australia
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<text>AS 4868.1-2008 Copper, lead and zinc sulfide concentrates-Chemical analysis - Part 1: Determination of gold and silver-Fibre assay gravimetric and flame atomic absorption spectrometric method</text>
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<text>PREFACE</text>
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<text>CONTENTS</text>
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<text>INTRODUCTION</text>
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<text>1 Scope</text>
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<text>2 Normative references</text>
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<text>3 Principle</text>
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<text>4 Reagents</text>
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<text>5 Apparatus</text>
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<text>6 Sample</text>
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<text>6.1 Test sample</text>
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<text>6.2 Test portion</text>
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<text>7 Procedure</text>
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<text>7.1 Number of determinations</text>
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<text>7.2 Trial fusion</text>
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<text>7.3 Blank tests</text>
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<text>7.4 Charge preparation</text>
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<text>7.5 Primary fusion</text>
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<text>7.6 Cupellation</text>
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<text>7.7 Retreatment of residues</text>
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<text>7.8 Determination of gold in the primary bead</text>
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<text>7.9 Determination of gold and silver in secondary beads and blanks, and of silver in prills</text>
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<text>7.10 Determination of silver in the parting solution</text>
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<text>8 Expression of results</text>
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<text>8.1 Mass fraction of gold</text>
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<text>8.2 Mass fraction of silver</text>
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<text>9 Precision</text>
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<text>9.1 Expression of precision</text>
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<text>9.2 Method for obtaining the final result (see Annex H)</text>
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<text>9.3 Precision between laboratories</text>
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<text>9.4 Check of trueness</text>
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<text>10 Test report</text>
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<text>Annex A (normative) Procedure for the preparation and determination of the mass of a predried test portion</text>
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<text>Annex B (normative) Trial fusion</text>
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<text>Annex C (normative) Blank determination</text>
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<text>Annex D (normative) Inquartation</text>
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<text>Annex E (normative) Determination of vaporization loss of silver during the cupellation process</text>
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<text>Annex F (normative) Sulfuric acid - Parting</text>
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<text>Annex G (normative) Determination of impurities in parting solutions and washings</text>
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<text>Annex H (normative) Flowsheet of the procedure for the acceptance of analytical values for test samples (see 9.2)</text>
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<text>Annex I (informative) Flowsheet of the method</text>
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<text>Annex J (informative) Roasting method</text>
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<text>Annex K (informative) Guide to the preparation of dilutions for the determination of silver in parting solutions and residues</text>
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<text>Annex L (informative) Derivation of precision equations</text>
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<text>Bibliography</text>
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Adopts ISO 10378:2005 to provide a method for determining gold and silver in copper, lead and zinc sulphide concentrates.
| Document Type | Standard |
| Status | Current |
| Publisher | Standards Australia |
| Committee | MN-005 |
| Supersedes |
|
