Evaluation of the Potential Release Tendency of Metals and Metalloids from the Estuarine Sediments: Case Study of Rasa Bay

	Evaluation of the Potential Release Tendency of Metals and Metalloids from the Estuarine Sediments: Case Study of Rasa Bay
	Fiket, Zeljka; Petrovic, Marija; Medunic, Gordana; Ivosevic, Tatjana; Fiket, Tomislav; Xu, Lizzy Zhang; Wang, Yan; Ding, Shiming
刊名	MOLECULES
	2021
卷号	26 期号:21
英文摘要	Assessing the environmental quality of coastal systems is important not only for the management and protection of such areas, but also for improving the quality of water resources. Since sediment itself can often be a source of certain toxic elements, in addition to information on the distribution of metals in the water column and in the sediment itself, it is useful to determine the bioavailable forms of individual elements, particularly toxic ones. In this study, water and sediment geochemical data were supplemented with oxyanion mobility in sediments estimated by diffusion gradients in thin film (DGTs). The data obtained indicate that the chemical composition of the water in the Rasa River estuary primarily reflects the high input of suspended sediment from the catchment, the mixing of freshwater and seawater, and to a lesser extent the effects of anthropogenic activities. Although sediment composition is primarily determined by geological and hydrodynamic conditions in the catchment, it also indicates moderate enrichment in Co, Cr, Mo and Ni. In contrast, the distribution of oxyanions in sediment pore water indicates the influence of sediment as a source of some elements in the bottom water; e.g., sediment contributes to 40% of the arsenic bottom water budget. The obtained depth profiles of the oxyanion distribution in the sediment pore water indicate an early onset of suboxic to anoxic conditions in Rasa Bay, which is prone to rapid sedimentation. All this demonstrates the need to consider the bioavailable forms of elements when assessing environmental quality, as the lack of such information can lead to an incomplete assessment, especially in dynamic coastal systems such as estuaries.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20347]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Fiket, Zeljka,Petrovic, Marija,Medunic, Gordana,et al. Evaluation of the Potential Release Tendency of Metals and Metalloids from the Estuarine Sediments: Case Study of Rasa Bay[J]. MOLECULES,2021,26(21).
APA	Fiket, Zeljka.,Petrovic, Marija.,Medunic, Gordana.,Ivosevic, Tatjana.,Fiket, Tomislav.,...&Ding, Shiming.(2021).Evaluation of the Potential Release Tendency of Metals and Metalloids from the Estuarine Sediments: Case Study of Rasa Bay.MOLECULES,26(21).
MLA	Fiket, Zeljka,et al."Evaluation of the Potential Release Tendency of Metals and Metalloids from the Estuarine Sediments: Case Study of Rasa Bay".MOLECULES 26.21(2021).