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Assessment Of Peroxide Oxidation For Acid Sulfate Soil Analysis. 2. Acidity Determination, Nicholas Ward, Leigh Sullivan, Richard Bush, Chuxia Lin
Assessment Of Peroxide Oxidation For Acid Sulfate Soil Analysis. 2. Acidity Determination, Nicholas Ward, Leigh Sullivan, Richard Bush, Chuxia Lin
Dr Nicholas J Ward
Total sulfidic acidity (TSA) and total potential acidity (TPA) are derived from peroxide oxidation of acid sulfate soil materials (ASS), and are measures of the sulfidic acidity and the net acidity (net acidity = sulfidic acidity + actual acidity – acid neutralising capacity), respectively. The TSA and TPA of 4 ASS materials were determined using a variety of peroxide oxidation procedures and compared with the sulfidic acidity and net acidity derived from the use of an acid–base accounting model. TSA and TPA values both varied greatly with each peroxide oxidation method used, and both measures were found to substantially underestimate …