Abstract
ISO 622:2016 specifies a reduced molybdophosphate photometric method for the determination of the total phosphorus content of hard coal, lignites and coke. Two methods for taking the phosphorus into solution are specified, namely extraction from the coal or coke ash with acid or by repeated oxidation of the coal or coke, by acid, to remove carbonaceous matter.
General information
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Status: PublishedPublication date: 2016-11Stage: International Standard to be revised [90.92]
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Edition: 2Number of pages: 6
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Technical Committee :ISO/TC 27/SC 5ICS :75.160.10
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Life cycle
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Previously
WithdrawnISO 622:1981
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Now
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Will be replaced by
Under developmentISO/DIS 622