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DSpace at VNU: Partition of heavy metals in a tropical river system impacted by municipal waste tài liệu, giáo án, bài g...
Environ Monit Assess (2013) 185:1907–1925 DOI 10.1007/s10661-012-2676-z Partition of heavy metals in a tropical river system impacted by municipal waste Trinh Anh Duc & Vu Duc Loi & Ta Thi Thao Received: 27 October 2011 / Accepted: 26 April 2012 / Published online: 17 May 2012 # Springer Science+Business Media B.V 2012 Abstract A research program was established to identify the governing factors for the partition coefficient (KD) of heavy metals between suspended particulate and dissolved phases in the Day River system a tropical, highly alluvial aquatic system, in Vietnam The targeted river system, draining an urbanized–industrialized catchment where discharged wastewater is mostly untreated, could be separated into the least impacted, pristine area, and the most impacted, polluted area Organic matter degradation was shown to govern the variation of parameters like total organic carbon, biochemical oxygen demand, chemical oxygen demand, nutrients, conductivity, or redox potential Heavy metals in both dissolved and particulate phases were enriched in severely polluted area because of wastewater inflow that contains concentrated metals and intensification of metal influx from sediment Results show log KD in the order Mn