Chapter 20 Chemical methods for assessing contaminant bioavailability in soils
作者： G.S.R. Krishnamurti
DOI: 10.1016/S0166-2481(07)32020-5
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摘要: Publisher Summary This chapter discusses chemical methods for assessing contaminants bioavailability in soils. The ecotoxicological significance of the environmental impact heavy metals soils is determined more by their specific form and reactivity association with particulate forms (soil colloids) than accumulation rate plants. Estimation plant transfer prediction bioavailability, therefore, should be based on proportion potentially “active species” metals. Quantitative assessment these fractions involves speciation both soil solution active fraction ecological consequences metal pollution largely relate to solubility mobility within profile. In this chapter, generalized biogeochemical cycle trace elements agro-ecosystems explained. Concepts related solid-phase fractionation are also discussed along single reagent extraction. Novel applications sequential extraction chapter.
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