BS EN ISO 14254:2011
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Soil quality. Determination of exchangeable acidity in barium chloride extracts
Hardcopy , PDF
18-08-2018
English
31-07-2011
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Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sample
7 Procedure
8 Calculations
9 Test report
Defines a method for the determination of exchangeable acidity in barium chloride extracts of soil samples obtained according to ISO 11260.
| Committee |
EH/4
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
This International Standard specifies a method for the determination of exchangeable acidity in barium chloride extracts of soil samples obtained according to ISO 11260.
The procedure described herein mainly concerns the determination of total exchangeable acidity by means of a fixed-pH end-point titration (see note). Two optional procedures are also given, describing respectively, determinations of free H+ acidity and of aluminium in the extracts.
This International Standard is applicable to all types of air-dry soil samples which have been pretreated in accordance with ISO 11464.
NOTE Titration of exchangeable acidity by means of a fixed-pH end-point may not be specific to a given acid species. The end-point pH value retained is 7,8, corresponding to complete precipitation of Al+3 ions in synthetic solutions. Titration of soil extracts to this pH may also include some more weakly ionized species or weak acid organic compounds.
| Standards | Relationship |
| ISO 14254:2001 | Identical |
| EN ISO 14254:2018 | Identical |
| ISO 11464:2006 | Soil quality Pretreatment of samples for physico-chemical analysis |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| ISO 11260:1994 | Soil quality Determination of effective cation exchange capacity and base saturation level using barium chloride solution |
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