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AS 2434.9-1991

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Methods for the analysis and testing of lower rank coal and its chars Determination of four acid-extractable inorganic ions in lower rank coal
Available format(s)

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

Superseded date

06-30-2017

Language(s)

English

Published date

01-01-1991

Preview

Sets out a method for the determination of the concentrations of the acid-extractable ions sodium, magnesium, calcium and iron in lower rank coal by atomic absorption spectrometry. Acid-soluble aluminium may also be determined.

This Standard sets out a method for the determination of the concentrations of the acid-extractable ions sodium, magnesium, calcium and iron in coal. The method is applicable to any coal, but a meaningful interpretation of results can only be gained if the forms of the inorganics in the coal are known.NOTE: The determination of acid-extractable aluminium is also possible by this method. Aluminium is found in most coals in various (3-n)+. Aluminiumforms of clays, but can also be present in some coals in an acid-extractable form, thought to be best represented as Al(OH)nin some clay types is partially soluble in acid. A detailed understanding of the mineral and inorganic constituents of the coal is necessary before acid-extractable aluminium determinations are performed.These considerations apply also to the other inorganic ions, but to a lesser extent.

Committee
MN-001
DocumentType
Standard
ISBN
0 7262 6547 0
Pages
4
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes

Under Revision see DR 00078 CP

AS 1038.16-1996 Coal and coke - Analysis and testing - Assessment and reporting of results
AS 2706-1984 Numerical values - Rounding and interpretation of limiting values
AS 1152-1993 Specification for test sieves
AS 2434.7-1986 Methods for the analysis and testing of lower rank coal and its chars - Determination of moisture in the analysis sample of lower rank coal

AS 1038.16-1996 Coal and coke - Analysis and testing - Assessment and reporting of results
AS 2418-1995 Coal and coke - Glossary of terms (Reconfirmed 2013) (Reconfirmed 2023)

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