The role of the freshwater oligochaete Limnodrilus hoffmeisteri in the distribution of Se in a water/sediment microcosm

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	The role of the freshwater oligochaete Limnodrilus hoffmeisteri in the distribution of Se in a water/sediment microcosm
	Chen, Hongxing ; Yan, Liang ; Zhao, Jianliang ; Yang, Bin ; Huang, Guoyong ; Shi, Wenjun ; Hou, Liping ; Zha, Jinmiao ; Luo, Yongju ; Mu, Jingli
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-10-15
卷号	687 页码:1098-1106
关键词	Se redistribution Limnodrilus hoffmeisteri Bioturbation Subcellular distribution Water/sediment microcosm
ISSN号	0048-9697
英文摘要	Selenite(IV) and selenate(VI) are the major species of Se in the seleniferous aquatic ecosystem. The redistribution of Se in thewater/sedimentmicrocosmby bioturbation remains largely unknown. In this study, the redistribution of Se in the water/sediment microcosm by the benthic oligochaete Limnodrilus hoffmeisteri was assessed. The wormswere exposed to 2-40 mu g/g dryweight of Se(IV) or Se(VI) in the sediment (diet) for 2 months. The changes in the Se levels in different compartments of themicrocosm (sediment, overlying water, and worms) were quantified after 2 weeks and 2 months. The subcellular distribution of Se in thewormswere also evaluated. Finally, the volatilization of Se from the two Se sources was estimated. The results showed that Se concentration in the overlying water and Se bioaccumulation in the wormswere increased with Se levels in the sediments. Approximately 1.6-9.8% of Se was volatilized in the absence of the worms and was intensified in the presence of the worms (2.1-25.7%). The subcellular distributionwitnessed high levels of Se in the cell debris (>60%). Se(IV) and Se(VI) differ in their bioaccumulation, redistribution and the effects on the growth of theworms. Our results suggest that the bioturbation by benthos play an essential role in the redistribution of Se in the water/sediment microcosm. (C) 2019 Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42678]
专题	生态环境研究中心_环境水质学国家重点实验室
作者单位	1.South China Normal Univ, SCNU Environm Res Inst, Guangdong Prov Key Lab Chem Pollut & Environm Saf, Guangzhou 510006, Guangdong, Peoples R China 2.South China Normal Univ, SCNU Environm Res Inst, MOE Key Lab Environm Theoret Chem, Guangzhou 510006, Guangdong, Peoples R China 3.Chinese Acad Sci, Key Lab Drinking Water Sci & Technol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Chen, Hongxing,Yan, Liang,Zhao, Jianliang,et al. The role of the freshwater oligochaete Limnodrilus hoffmeisteri in the distribution of Se in a water/sediment microcosm[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,687:1098-1106.
APA	Chen, Hongxing.,Yan, Liang.,Zhao, Jianliang.,Yang, Bin.,Huang, Guoyong.,...&Xie, Lingtian.(2019).The role of the freshwater oligochaete Limnodrilus hoffmeisteri in the distribution of Se in a water/sediment microcosm.SCIENCE OF THE TOTAL ENVIRONMENT,687,1098-1106.
MLA	Chen, Hongxing,et al."The role of the freshwater oligochaete Limnodrilus hoffmeisteri in the distribution of Se in a water/sediment microcosm".SCIENCE OF THE TOTAL ENVIRONMENT 687(2019):1098-1106.