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NEN-ISO 5073

Brown coals and lignites - Determination of humic acids

active, Most Current
Organization: NEN
Publication Date: 1 December 2021
Status: active
Page Count: 18
ICS Code (Coals): 73.040
scope:

This document specifies volumetric methods for the determination of total humic acids and free humic acid of brown coals and lignites.

Document History

NEN-ISO 5073
December 1, 2021
Brown coals and lignites - Determination of humic acids
This document specifies volumetric methods for the determination of total humic acids and free humic acid of brown coals and lignites.
NEN-ISO 5073
June 1, 2013
Brown coals and lignites - Determination of humic acids
This International Standard specifies volumetric methods for the determination of a) total humic acids, and b) free humic acid, of brown coals and lignites.
NEN-ISO 5073
January 1, 2000
Brown coals and lignites - Determination of humic acids
Specifies volumetric methods for the determination of a) total humic acid,and b) free humic acid, of brown coals and lignites.

References

This document references:
ISO 1171 - Solid mineral fuels - Determination of ash
Published by ISO on June 15, 2010
This International Standard specifies a method for the determination of the ash of all solid mineral fuels.
This document references:
ISO 1213-2 - Solid mineral fuels - Vocabulary - Part 2: Terms relating to sampling, testing and analysis
Published by ISO on December 15, 2016
This document defines terms commonly employed in the sampling, testing and analysis of solid mineral fuels. Alternative names are given for several terms. In some cases, however, the use of the...
This document references:
ISO 13909-4 - Hard coal and coke - Mechanical sampling - Part 4: Coal - Preparation of test samples
Published by ISO on July 1, 2016
This part of ISO 13909 describes the preparation of samples of coal from the combination of primary increments to the preparation of samples for specific tests.
This document references:
ISO 18283 - Hard coal and coke — Manual sampling TECHNICAL CORRIGENDUM 1
Published by ISO on May 1, 2009
A description is not available for this item.
This document references:
ISO 5068-2 - Brown coals and lignites — Determination of moisture content — Part 2: Indirect gravimetric method for moisture in the analysis sample
Published by ISO on February 1, 2007
This International Standard specifies a method for the determination of the moisture content in the analysis sample of brown coals and lignites using an indirect gravimetric method.
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