This Standard specifies a method for the determination of peroxide pH (pHOX), titratable peroxide acidity (TPA) and excess acid neutralizing capacity (ANCE) in acid sulfate soil following digestion with 30% hydrogen peroxide.
Table of contents
Header
About this publication
Preface
1 Scope
2 Referenced documents
3 Definitions
4 Principle
5 Reagents
5.1 General
5.2 Calibration solutions for the pH meter
5.2.1 General
5.2.2 Buffer solution, pH 4.00 at 20°C
5.2.3 Buffer solution, pH 6.88 at 20°C
5.2.4 Buffer solution, pH 9.22 at 20°C
5.3 Copper chloride solution, 400 mg Cu/L as CuCl2.2H2O
5.4 Hydrochloric acid ρ20 1.16 g/mL (HCl)
5.5 Hydrochloric acid solution, 0.5 M (Standardized)
5.6 Hydrogen peroxide, 30% (w/w) H2O2 (Bulk peroxide for digestion)
5.6.1 Checking acidity of hydrogen peroxide
5.6.2 Checking sulfur content of hydrogen peroxide
