Dose-related changes in respiration and enzymatic activities in soils amended with mobile platinum and gold

Abstract

Abstract This study assessed the effect of amendment of Australian soils (acidic, organic matter, Fe-rich, alkaline and silt-rich soils) with mobile platinum and gold (0 to 2000\xa0mg\xa0kg−1) on soil respiration and the activity of seven key soil enzymes. Platinum amendment significantly reduced soil respiration at almost all concentrations (p