L1 /
5
CH3041
SULPHUR & ACID
TRAILS
• S.
Trail requires sulphate analyses, which are best performed with ICP-OES
Inductively Coupled Plasma -OES
Inductively Coupled Plasma -OES
• Problems: the presence of jarosite
KFe3(SO4)2(OH)6 results in over-estimates of the potential acid generation.
KFe3(SO4)2(OH)6 results in over-estimates of the potential acid generation.
• Acid trail : measures the Total
Sulphidic Acidity units: mol H+ per tonne of dry
soil.
TSA = TPA - TAA
TPA Total Potential Acidity of peroxide
digest.
TAA Total Actual Acidity of KCl soil extract.
TAA Total Actual Acidity of KCl soil extract.
• Problems: if
large shells are present it under-estimates
potential acid generation.
