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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; Dong, Wu; Ying, Guang-Guo; Xie, Lingtian
2019-10-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume687Pages:1098-1106
AbstractSelenite(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.
Department环境水质学国家重点实验室
KeywordSe redistribution Limnodrilus hoffmeisteri Bioturbation Subcellular distribution Water/sediment microcosm
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/42678
Collection环境水质学国家重点实验室
Affiliation1.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
Recommended Citation
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.
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