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DOI	10.1016/j.marpolbul.2019.110807
	Restriction of sulfate reduction on the bioavailability and toxicity of trace metals in Antarctic lake sediments
	Chen Y.; Ge J.; Huang T.; Shen L.; Chu Z.; Xie Z.
发表日期	2020
ISSN	0025326X
卷号	151
英文摘要	In this study, Acid-Volatile Sulfur (AVS), trace metals Cu, Cd and Zn and their chemical speciation based on BCR-sequential and simultaneous extraction (SEMs) in Antarctic lake sediments (Y2-1 and YO) were analyzed to investigate the restriction of sulfate reduction on the bioavailability and toxicity of trace metals. Much higher trace metals in Y2-1 indicating a primary source from penguin guano. The main chemical speciation of Cu and Cd in Y2-1 was their oxidizable fraction in contrast to those of weak-acid extraction in YO. Lower ratio of ΣSEM/AVS in Y2-1 indicating less toxicity of the trace metals. The main chemical speciation of Cd in Y2-1 was their oxidizable fraction in contrast to that exchangeable fraction in penguin guano, indicating that although amounts of Cd was transported from marine to lake by penguins, strong sulfate reduction in ornithogenic sediments restricts the bioavailability and toxicity of Cd through the formation of insoluble sulfide. © 2019 Elsevier Ltd
英文关键词	AVS; Bioavailability; Ornithogenic sediments; Sulfate reduction; Toxicity; Trace metals
语种	英语
scopus关键词	Biochemistry; Birds; Cadmium; Chemical analysis; Chemical speciation; Extraction; Lakes; Manures; Sediments; Sulfur compounds; Toxicity; Acid-volatile sulfurs; Bioavailability; Exchangeable fraction; Ornithogenic sediments; Primary sources; Simultaneous extractions; Sulfate reduction; Trace metal; Trace elements; cadmium; copper; nitrogen; organic carbon; phosphorus; sulfate; trace metal; zinc; heavy metal; sulfate; bioavailability; cadmium; copper; extraction method; lacustrine deposit; sediment pollution; speciation (chemistry); sulfate; toxicity; zinc; Antarctica; bioavailability; chemical analysis; concentration (parameter); controlled study; lake sediment; nonhuman; penguin; penguin guano; scanning electron microscopy; total organic carbon; trend study; analysis; animal; bioavailability; environmental monitoring; lake; metabolism; sediment; toxicity; water pollutant; Antarctica; Spheniscidae; Animals; Antarctic Regions; Biological Availability; Environmental Monitoring; Geologic Sediments; Lakes; Metals, Heavy; Sulfates; Water Pollutants, Chemical
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149279
作者单位	School of Resources and Environmental Engineering, Anhui University, Hefei, 230601, China; Anhui Province Key Laboratory of Wetland Ecosystem Protection and Restoration, Anhui University, Hefei, 230601, China; Anhui Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
推荐引用方式 GB/T 7714	Chen Y.,Ge J.,Huang T.,et al. Restriction of sulfate reduction on the bioavailability and toxicity of trace metals in Antarctic lake sediments[J],2020,151.
APA	Chen Y.,Ge J.,Huang T.,Shen L.,Chu Z.,&Xie Z..(2020).Restriction of sulfate reduction on the bioavailability and toxicity of trace metals in Antarctic lake sediments.Marine Pollution Bulletin,151.
MLA	Chen Y.,et al."Restriction of sulfate reduction on the bioavailability and toxicity of trace metals in Antarctic lake sediments".Marine Pollution Bulletin 151(2020).