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AS
AS 4868.1-2008

AS 4868.1-2008

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Copper, lead and zinc sulfide concentrates - Chemical analysis Determination of gold and silver - Fire assay gravimetric and flame atomic absorption spectrometric method

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

29-04-2022

Superseded by

AS ISO 10378:2022

Language(s)

English

Published date

12-03-2008

Publisher

Standards Australia

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Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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1 - 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
4 - PREFACE
5 - CONTENTS
7 - INTRODUCTION
9 - 1 Scope
9 - 2 Normative references
10 - 3 Principle
10 - 4 Reagents
12 - 5 Apparatus
13 - 6 Sample
13 - 6.1 Test sample
13 - 6.2 Test portion
13 - 7 Procedure
13 - 7.1 Number of determinations
13 - 7.2 Trial fusion
13 - 7.3 Blank tests
14 - 7.4 Charge preparation
15 - 7.5 Primary fusion
15 - 7.6 Cupellation
16 - 7.7 Retreatment of residues
16 - 7.8 Determination of gold in the primary bead
17 - 7.9 Determination of gold and silver in secondary beads and blanks, and of silver in prills
19 - 7.10 Determination of silver in the parting solution
19 - 8 Expression of results
19 - 8.1 Mass fraction of gold
20 - 8.2 Mass fraction of silver
21 - 9 Precision
21 - 9.1 Expression of precision
22 - 9.2 Method for obtaining the final result (see Annex H)
23 - 9.3 Precision between laboratories
25 - 9.4 Check of trueness
26 - 10 Test report
27 - Annex A (normative) Procedure for the preparation and determination of the mass of a predried test portion
29 - Annex B (normative) Trial fusion
30 - Annex C (normative) Blank determination
31 - Annex D (normative) Inquartation
32 - Annex E (normative) Determination of vaporization loss of silver during the cupellation process
33 - Annex F (normative) Sulfuric acid - Parting
35 - Annex G (normative) Determination of impurities in parting solutions and washings
39 - Annex H (normative) Flowsheet of the procedure for the acceptance of analytical values for test samples (see 9.2)
40 - Annex I (informative) Flowsheet of the method
41 - Annex J (informative) Roasting method
42 - Annex K (informative) Guide to the preparation of dilutions for the determination of silver in parting solutions and residues
43 - Annex L (informative) Derivation of precision equations
60 - Bibliography

Adopts ISO10378:2005 to provide a method for determining gold and silver in copper, lead and zinc sulphide concentrates.

Committee
MN-005
DevelopmentNote
Standard has been given Pending Revision status.
DocumentType
Standard
ISBN
0 7337 8580 8
Pages
52
ProductNote
Pending Revision indicates that as a result of the Aged Standards review process, the document needs updating. If no project proposal, meeting the quality criteria, is received within the 12 month timeframe, the document shall be withdrawn.
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 10378:2005 Identical

Originated in part as AS 2917-1986, AS 2678.5-2002 and AS 4030.3-2002.
AS 2917.2-1994, AS 2678.5-2002 and AS 4030.3-2002 revised, amalgamated and redesignated as AS 4868.1-2008.

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