The OECD 307 Guideline is used to assess the transformation rate of a test substance in aerobic/anaerobic soils. The anaerobic option in this guideline determines the redox potential of the water and soil layers which may influence the rate of a test substance's transformation. In this 120-day study, test systems containing 50 and 100 gram dry weight soil samples (from US, European and Brazilian sources with varying organic carbon contents) will be flooded with either purified, tap or natural water. Subsequently, each test vessel will be flushed with nitrogen to establish anaerobic conditions. At selected intervals an assessment of each system's redox potential and pH in the aqueous and soil layers, including D.O measurements in the aqueous layer will be measured. Results will indicate which conditions provide the highest degree of anaerobicity.

Investigation of redox potential in five soils with varying levels of organic carbon matter under anaerobic conditions

248th National Meeting (2014)

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