Trace Elements in Waterlogged Soils and Sediments

Rezensionen / Stimmen

Wetland and other water-logged soils are of special importance in providing particular ecosystem services such as hydrological buffering, organic carbon storage, habitat and biodiversity source. Sediments play a role of similar importance as components of the aquatic environment at the bottom of water bodies. Both have in common that they also act as sinks for recalcitrant chemicals and as such are increasingly loaded with trace elements of anthropogenic origin. Due to the dominance of anaerobic conditions, the fate of trace elements in water-logged soils and sediments is governed by very different processes and mechanisms in these environments as compared to well-aerated soils. Against this backdrop, it is all the more remarkable how little we still know about these processes and the factors driving them. This book thus is very timely. It is also very comprehensive. In eighteen chapters written by experts in the respective fields, it gives the latest findings and insights into physicochemical factors and reactions controlling the speciation and binding of heavy metals and metalloids in water-logged soils and sediments, their bioavailability and the assessment of associated risks for humans and other recipients, and also on established remediation technology. Several chapters have a focus on redox-sensitive metals and metalloids such as arsenic, selenium, chromium and uranium. Some deal with new contaminants such as rare earth elements, others with 'usual suspects' such as cadmium and zinc. While various contributions are devoted to more fundamental aspects such as the kinetics of sorption and desorption processes or the mechanisms governing the retention and mobility of nanoparticles in aquatic environments, others provide insight into the role of particular environments such as paddies and other temporary flooded soils for trace element behavior or present specific case studies, e.g. on the fate of subsurface chromium on the Hanford site. In summary, this book