Potentially toxic element concentrations, distribution and mobility in wastewater receiving river sediments in Hanoi, Vietnam
Sediment samples were collected at six sites in the wastewater exposed rivers, To Lich (TL) and Kim Nguu (KN) in Hanoi, Vietnam. The rivers contained very high concentrations of potentially toxic elements (PTE) in particular at one site in TL with CA, Pb and Zn concentrations of 427±306, 168±64 and 1240±779mg·kg<- 1> dry weight (d. w.), respectively. For As, Cr and Cu there were no significant difference between sediment site concentrations in each river; whereas CA, Pb and Ni concentrations differed between sites in TL as did Zn concentrations in KN. The observed PTE partitioning coefficients (Kd) between sediment and pore water are highly indicating that the elements are strongly retained due to precipitation processes in the river sediments. The precipitation may prevent the PTEs from entering production systems receiving wastewater from the rivers but the potential mobility of the elements must be assessed in relation to the future use and landfilling with river sediments.
Potentially toxic elements Sediment Wastewater
S. T. Ingvertsen H. Marcussen A. Dalsgaard P. E. Holm
Departments of Veterinary Pathobiology, Faculty of Life Sciences, University of Copenhagen, 1871 Fre Departments of Veterinary Pathobiology, Faculty of Life Sciences, University of Copenhagen, 1871 Fre Departments of Natural Sciences Faculty of Life Sciences, University of Copenhagen, 1871 Frederiksbe
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
71-72
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）