BS ISO 14388-3:2014
Current
The latest, up-to-date edition.
Soil quality. Acid-base accounting procedure for acid sulfate soils Suspension peroxide oxidation combined acidity and sulfur (SPOCAS) methodology
Hardcopy , PDF
English
30-09-2014
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Procedure for determination of pH[KCl] and TAA
8 Calculation of TAA
9 Procedure for determination of sulfur (S[KCl]), calcium
(Ca[KCl]) and magnesium (Mg[KCl]) extractable with
1 mol/l potassium chloride
10 Calculation of S[KCl], Ca[KCl] and Mg[KCl]
11 Procedure for determination of peroxide pH (pH[OX]),
titratable peroxide acidity (TPA) and excess acid
neutralizing capacity (ANC[E])
12 Calculation of TPA and ANC[E]
13 Procedure for determining peroxide sulfur (S[P]),
calcium (Ca[P]) and magnesium (Mg[P])
14 Calculation of peroxide sulfur (S[P]), calcium (Ca[P])
and magnesium (Mg[P])
15 Procedure for determining acid extractable sulfur in
soil residue after peroxide oxidation (S[RAS])
16 Calculation of S[RAS]
17 Calculation of TSA
18 Calculation of S[POS], Ca[A] and Mg[A]
19 Precision
20 Test report
Bibliography
Defines a suite of methods used to determine net acidity in acid sulfate soils.
| Committee |
EH/4
|
| DevelopmentNote |
Supersedes 13/30259628 DC. (09/2014)
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO14388 specifies a suite of methods used to determine net acidity in acid sulfate soils. This part of ISO14388 specifies a method for the determination of pH in a 1mol/l potassium chloride soil suspension (pHKCl) and where required, titratable actual acidity (TAA). Following this, potassium chloride extractable sulfur (SKCl), calcium (CaKCl) and magnesium (MgKCl) are determined. On a separate test portion, following digestion with 30% hydrogen peroxide, peroxide pH (pHOX), titratable peroxide acidity (TPA) and excess acid neutralizing capacity (ANCE) are determined. Following this, peroxide sulfur (SP), calcium (CaP) and magnesium (MgP) are determined. On samples where jarosite is present, or where pHKCl is
| Standards | Relationship |
| ISO 14388-3:2014 | Identical |
| ISO 14254:2001 | Soil quality Determination of exchangeable acidity in barium chloride extracts |
| ISO 8655-5:2002 | Piston-operated volumetric apparatus Part 5: Dispensers |
| ISO 8655-1:2002 | Piston-operated volumetric apparatus Part 1: Terminology, general requirements and user recommendations |
| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 648:2008 | Laboratory glassware — Single-volume pipettes |
| ISO 835:2007 | Laboratory glassware — Graduated pipettes |
| ISO 8655-2:2002 | Piston-operated volumetric apparatus Part 2: Piston pipettes |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| ISO 8655-3:2002 | Piston-operated volumetric apparatus Part 3: Piston burettes |
| ISO 14388-1:2014 | Soil quality Acid-base accounting procedure for acid sulfate soils Part 1: Introduction and definitions, symbols and acronyms, sampling and sample preparation |
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