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	Soil geochemistry and digestive solubilization control mercury bioaccumulation in the earthworm Pheretima guillemi
	Dang, Fei1; Zhao, Jie1,2; Greenfield, Ben K.3; Zhong, Huan4; Wang, Yujun1; Yang, Zhousheng2; Zhou, Dongmei1
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2015-07-15
卷号	292页码:44-51
关键词	Methylmercury Earthworm (Pheretima guillemi) Total organic carbon Digestive solubilization
ISSN号	0304-3894
DOI	10.1016/j.jhazmat.2015.03.012
通讯作者	Zhou, Dongmei(dmzhou@issas.as.ac.cn)
英文摘要	Mercury presents a potential risk to soil organisms, yet our understanding of mercury bioaccumulation in soil dwelling organisms is limited. The influence of soil geochemistry and digestive processes on both methylmercury (MeHg) and total mercury (THg) bioavailability to earthworms (Pheretima guillemi) was evaluated in this study. Earthworms were exposed to six mercury-contaminated soils with geochemically contrasting properties for 36 days, and digestive fluid was concurrently collected to solubilize soil-associated mercury. Bioaccumulation factors were 7.5-31.0 and 0.2-0.6 for MeHg and THg, respectively, and MeHg accounted for 17-58% of THg in earthworm. THg and MeHg measured in soils and earthworms were negatively associated with soil total organic carbon (TOC). Earthworm THg and MeHg also increased with increasing soil pH. The proportion of MeHg and THg released into the digestive fluid (digestive solubilizable mercury, DSM) was 8.3-18.1% and 0.4-1.3%, respectively. The greater solubilization of MeHg by digestive fluid than CaCl2, together with a biokinetic model-based estimate of dietary MeHg uptake, indicated the importance of soil ingestion for MeHg bioaccumulation in earthworms. (C) 2015 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	FIELD-CONTAMINATED SOILS ; EISENIA-FOETIDA ; METHYL MERCURY ; LUMBRICUS-TERRESTRIS ; BENTHIC INVERTEBRATE ; FEEDING-BEHAVIOR ; FOREST SOILS ; BIOAVAILABILITY ; METHYLMERCURY ; SEDIMENTS
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000353740500006
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558387
专题	南京土壤研究所
通讯作者	Zhou, Dongmei
作者单位	1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China 2.Anhui Normal Univ, Coll Environm Sci & Engn, Wuhu 241003, Peoples R China 3.Univ Calif Berkeley, Dept Environm Hlth Sci, Berkeley, CA 94720 USA 4.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resources Reuse, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Dang, Fei,Zhao, Jie,Greenfield, Ben K.,et al. Soil geochemistry and digestive solubilization control mercury bioaccumulation in the earthworm Pheretima guillemi[J]. JOURNAL OF HAZARDOUS MATERIALS,2015,292:44-51.
APA	Dang, Fei.,Zhao, Jie.,Greenfield, Ben K..,Zhong, Huan.,Wang, Yujun.,...&Zhou, Dongmei.(2015).Soil geochemistry and digestive solubilization control mercury bioaccumulation in the earthworm Pheretima guillemi.JOURNAL OF HAZARDOUS MATERIALS,292,44-51.
MLA	Dang, Fei,et al."Soil geochemistry and digestive solubilization control mercury bioaccumulation in the earthworm Pheretima guillemi".JOURNAL OF HAZARDOUS MATERIALS 292(2015):44-51.

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