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dc.contributor.authorWu, Hao
dc.contributor.authorDing, Zhenhua
dc.contributor.author丁振华
dc.contributor.authorLiu, Yang
dc.contributor.authorLiu, Jinling
dc.contributor.authorYan, Haiyu
dc.contributor.authorPan, Jiayong
dc.contributor.authorLi, Liuqiang
dc.contributor.authorLin, Huina
dc.contributor.authorLin, Guanghui
dc.contributor.author林光辉
dc.contributor.authorLu, Haoliang
dc.contributor.author卢豪良
dc.date.accessioned2012-04-13T10:55:15Z
dc.date.available2012-04-13T10:55:15Z
dc.date.issued2011-01-11
dc.identifier.citationJournal of Environmental Sciences.2011 Jannuary;23(1):14-21zh_CN
dc.identifier.issn1001-0742
dc.identifier.urihttp://dx.doi.org/doi:10.1016/S1001-0742(10)60368-3
dc.identifier.uriWOS:000286571500002
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/12068
dc.description.abstractEstuaries are important sites for mercury (Hg) methylation, with sulfate-reducing bacteria (SRB) thought to be the main Hg methylators. Distributions of total mercury (THg) and methylmercury (MeHg) in mangrove sediment and sediment core from Jiulong River Estuary Provincial Mangrove Reserve, China were determined and the possible mechanisms of Hg methylation and their controlling factors in mangrove sediments were investigated. Microbiological and geochemical parameters were also determined. Results showed that SRB constitute a small fraction of total bacteria (TB) in both surface sediments and the profile of sediments. The content of THg, MeHg, TB, and SRB were (350 +/- 150) ng/g, (0.47 +/- 0.11) ng/g, (1.4 x 10(11) +/- 4.1 x 10(9)) cfu/g dry weight (dw), and (5.0 x 10(6) +/- 2.7 x 10(6)) cfu/g dw in surficial sediments, respectively, and (240 +/- 24) ng/g, (0.30 +/- 0.15) ng/g, (1.9 x 10(11) +/- 4.2 x 10(10)) cfu/g dw, and (1.3 x 10(6) +/- 2.0 x 10(6)) cfu/g dw in sediment core, respectively. Results showed that THg, MeHg, TB, MeHg/THg, salinity and total sulfur (TS) increased with depth, but total organic matter (TOM), SRB, and pH decreased with depth. Concentrations of MeHg in sediments showed significant positive correlation with THg, salinity, TS, and MeHg/THg, and significant negative correlation with SRB, TOM, and pH. It was concluded that other microbes, rather than SRB, may also act as main Hg methylators in mangrove sediments.zh_CN
dc.description.sponsorshipNational Natural Science Foundation of China[40676064, 30530150]; Guangdong-HK Technology Cooperation[08-Lh-04]; Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology), the Ministry of Education[070717, 081203]; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences; National Supporting Projects of Science & Technology in Forestry[2009BADB2B0605]zh_CN
dc.language.isoenzh_CN
dc.publisherSCIENCE CHINA PRESSzh_CN
dc.subjectmercuryzh_CN
dc.subjectsedimentzh_CN
dc.subjectmethylmercuryzh_CN
dc.subjectmangrovezh_CN
dc.subjectsulfate-reducing bacteriazh_CN
dc.titleMethylmercury and sulfate-reducing bacteria in mangrove sediments from Jiulong River Estuary, Chinazh_CN
dc.typeArticlezh_CN


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