BS ISO 14388-2:2014
Current
The latest, up-to-date edition.
Soil quality. Acid-base accounting procedure for acid sulfate soils Chromium reducible sulfur (CRS) 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 for analysis of chromium reducible sulfur
6 Apparatus
7 Procedure for determining chromium reducible sulfur
8 Calculation of S[CR]
9 Reagents for determination of pH[KCl] and TAA
10 Procedure for determination of pH[KCl] and TAA
11 Calculation of TAA
12 Procedure for determination of sulfur (S[KCl]), calcium
(Ca[KCl]), and magnesium (Mg[KCl]) extractable
with 1 mol/l potassium chloride
13 Calculation of S[KCl], Ca[KCl], and Mg[KCl]
14 Reagents for determination of sulfur (S[HCl]), calcium
(Ca[HCl]), and magnesium (Mg[HCl]) extractable
with hydrochloric acid
15 Procedure for determination of sulfur (S[HCl]), calcium
(Ca[HCl]), and magnesium (Mg[HCl]) extractable
with hydrochloric acid
16 Calculation of net acid-soluble sulfur (S[NAS]), calcium
(Ca[NAS]), and magnesium (Mg[NAS])
17 Reagents for determining acid neutralizing capacity by
back-titration (ANC[BT])
18 Procedure for determining acid neutralizing capacity by
back-titration (ANC[BT])
19 Alternatives for determination of acid neutralizing
capacity
20 Precision
21 Test report
Bibliography
Describes a suite of methods used to determine the net acidity in acid sulfate soils.
| Committee |
EH/4
|
| DevelopmentNote |
Supersedes 13/30259625 DC. (09/2014)
|
| DocumentType |
Standard
|
| Pages |
30
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO14388 specifies a suite of methods used to determine the net acidity in acid sulfate soils. This part of ISO14388 specifies a method for measuring chromium reducible sulfur (SCR) by iodimetric titration of distilled hydrogen sulfide trapped as zinc sulfide, following acidic chromous chloride digestion. This method determines inorganic sulfides (e.g. pyrite, marcasite, greigite, mackinawite) and elemental sulfur in acid sulfate soil without interferences from organic sulfur and oxidized forms of sulfur such as sulfate. On a separate test portion of soil, the pH in a 1mol/l KCl soil suspension (pHKCl) is determined. When pHKCl is
| Standards | Relationship |
| ISO 14388-2:2014 | Identical |
| ISO 385-2:1984 | Laboratory glassware Burettes Part 2: Burettes for which no waiting time is specified |
| ISO 14254:2001 | Soil quality Determination of exchangeable acidity in barium chloride extracts |
| 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 835-2:1981 | Laboratory glassware Graduated pipettes Part 2: Pipettes for which no waiting time is specified |
| ISO 385-1:1984 | Laboratory glassware — Burettes — Part 1: General requirements |
| ISO 835-3:1981 | Laboratory glassware Graduated pipettes Part 3: Pipettes for which a waiting time of 15 s is specified |
| ISO 8655-2:2002 | Piston-operated volumetric apparatus Part 2: Piston pipettes |
| ISO 835-1:1981 | Laboratory glassware Graduated pipettes Part 1: General requirements |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| ISO 10694:1995 | Soil quality — Determination of organic and total carbon after dry combustion (elementary analysis) |
| ISO 8655-3:2002 | Piston-operated volumetric apparatus Part 3: Piston burettes |
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