AS 4969.12-2009
Current
Analysis of acid sulfate soil - Dried samples - Methods of test Complete suspension peroxide oxidation combined acidity and sulfur (SPOCAS) method
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English
03-18-2009
This Standard specifies a method for the determination of pH in a 1 M KCl soil suspension, and, where required, titratable actual acidity (TAA) in acid sulfate soil. Following this, potassium chloride extractable sulfur (SKCl), calcium (CaKCl) and magnesium (MgKCl) are determined.
| Committee |
EV-009
|
| DocumentType |
Standard
|
| ISBN |
0 7337 9039 9
|
| Pages |
21
|
| ProductNote |
Reconfirmed 25/05/2018.This standard has been reconfirmed in Australia in 2018 and remains current in New Zealand. Reconfirmation Notice 25/05/2018
|
| PublisherName |
Standards Australia
|
| Status |
Current
|
| Supersedes |
This Standard specifies a method for the determination of pH in a 1 M KCl soil suspension, and, where required, titratable actual acidity (TAA) in acid sulfate soil. Following this, potassium chloride extractable sulfur (SKCl), calcium (CaKCl) and magnesium (MgKCl) are determined. On a separate test portion, peroxide pH (pHOX), titratable peroxide acidity (TPA) and excess acid neutralizing capacity (ANCE) are determined following digestion with 30% hydrogen peroxide. Following this, peroxide sulfur (SP), calcium (CaP) and magnesium (MgP) are determined. On samples where jarosite is present, or pHKCl < 4.5, residual acid soluble sulfur (SRAS) is determined on the soil residue remaining after peroxide digestion.
First published as AS 4969.12-2009.
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