Norm

ISO 14388-3:2014 en

Bodem - Zuur-base registratieprocedure voor zure sulfaathoudende bodems - Deel 3: Methode met suspensie peroxide oxidatie gecombineerd met zuurgraad en zwavel (SPOCAS)

98,05

Over deze norm

Status Definitief
Aantal pagina's 20
Commissie Milieukwaliteit
Gepubliceerd op 01-08-2014
Taal Engels
ISO 14388-3 specifies a suite of methods used to determine net acidity in acid sulfate soils. This part of ISO 14388 specifies a method for the determination of pH in a 1 mol/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 < 4,5, residual acid soluble sulfur (SRAS) is determined on the soil residue remaining after peroxide digestion. Titratable sulfidic acidity (TSA), reacted calcium (CaA), reacted magnesium (MgA) and peroxide oxidizable sulfur (SPOS) are then determined by difference. For peat samples containing substantial levels of organic sulfur, the SPOCAS suite is generally unsuitable for estimating sulfide content, and the chromium reducible suite of procedures should be used instead.

Details

ICS-code 13.080.10
Nederlandse titel Bodem - Zuur-base registratieprocedure voor zure sulfaathoudende bodems - Deel 3: Methode met suspensie peroxide oxidatie gecombineerd met zuurgraad en zwavel (SPOCAS)
Engelse titel Soil quality - Acid-base accounting procedure for acid sulfate soils - Part 3: Suspension peroxide oxidation combined acidity and sulfur (SPOCAS) methodology
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