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ASTM UOP 959 : 1998

ASTM UOP 959 : 1998

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Ammonium Determination in Aqueous Solutions by Ion Chromatography

Available format(s)

Hardcopy , PDF

Withdrawn date

09-05-2013

Language(s)

English

Published date

25-07-2002

Publisher

American Society for Testing and Materials

Describes the concentration of ammonium ion in aqueous solutions by Ion Chromatography (IC).

This method is for determining the concentration of ammonium ion in aqueous solutions by Ion Chromatography (IC). The limit of quantitation of the method is 0.0001 mass-% (1 mass-ppm). Sodium and potassium interfere with the analysis when they are present at concentrations greater than 0.1 mass-%. Acidic samples that contain greater than 50-mM hydronium ion concentration (pH less than 1.3) deteriorate the performance of the analysis (through loss of resolution). Organic contamination should also be kept to a minimum (to lengthen column life). Sample matrix effects can be avoided or minimized by sample dilution, but only at the expense of the analysis limit of quantitation. When used in conjunction with UOP Method 958 (an extraction procedure), ammonia can also be determined in hydrocarbon samples.

DocumentType
Standard
Pages
8
PublisherName
American Society for Testing and Materials
Status
Withdrawn
SupersededBy

ASTM UOP 958 : 1998 Ammonia in Hydrocarbons

ASTM UOP 958 : 1998 Ammonia in Hydrocarbons

View more information
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Hardcopy - English
PDF - English
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