Liu, QQ; Song, JM; Ma, T; Jiang, M; Ma, GX; Sheng, YQ
发表期刊ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN0167-6369
2019-10
卷号191期号:10页码:607
关键词SedimentsMercuryPretreatmentDrying methodsSequential extraction proceduresMetal fraction
研究领域Environmental Sciences
DOI10.1007/s10661-019-7799-z
产权排序[Liu, Qunqun; Song, Jiangmin; Ma, Tao; Jiang, Ming; Sheng, Yanqing] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai, Peoples R China; [Liu, Qunqun; Song, Jiangmin; Jiang, Ming] Univ Chinese Acad Sci, Beijing, Peoples R China; [Ma, Tao; Ma, Guangxiang] Shandong Acad Environm Sci Co Ltd, Jinan 250100, Peoples R China
通讯作者Sheng, Yanqing(yqsheng@yic.ac.cn)
作者部门海岸带环境工程技术研究与发展中心
英文摘要The geochemical fractions of heavy metals in sediments are crucial indexes for their mobility and bioavailability evaluations. However, different drying processes of sediment pretreatment could change metal geochemical fractions, especially for Hg, which is potentially volatile. In this study, the influence of pretreatment methods including oven-drying, air-drying, freeze-drying, and fresh sediments on the analysis of Hg fractions in sediments was investigated. Results showed that remarkable differences of Hg concentration were observed between fresh sediments and dried pretreatment sediments (P < 0.05). Briefly, the concentrations of the water-soluble and human stomach acid-soluble fractions in oven-dried and air-dried sediments generally showed significant increasing trends compared with those in the fresh sediments, while the organo-chelated fraction exhibited significant decreasing trends. The cause of this phenomenon was primarily the oxidation of organic matter, aging process, and the diffusion of Hg into micropores. The significant loss was also observed at elemental Hg fraction due to its volatilization effect. The freeze-drying posed minor influence on changes of Hg fraction analysis compared with oven-drying and air-drying. Moreover, the total Hg concentrations in pretreated sediments showed a decline of varying degrees compared with those in fresh sediments ascribing to the volatilization of elemental Hg. Finally, Pearson correlation analysis further confirmed that freeze-drying could minimize the errors of the Hg fraction analysis in sediments.
文章类型Article
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) [XDA23050203]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41373100]; Regional Key Project of STS of CAS [KFJ-STS-QYZX-057]; Key Research and Development Program of Shandong Province [2019GSF109002]
收录类别SCI
语种英语
关键词[WOS]TRACE-METAL CONTAMINATION; SAMPLE PRETREATMENT; INORGANIC MERCURY; SURFACE SEDIMENTS; SPECIATION; ACID; SULFUR; EXTRACTIONS; TEMPERATURE; ESTUARINE
研究领域[WOS]Environmental Sciences
WOS记录号WOS:000484944000004
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24850
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
中科院海岸带环境过程与生态修复重点实验室
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai, Peoples R China;
2.Univ Chinese Acad Sci, Beijing, Peoples R China;
3.Shandong Acad Environm Sci Co Ltd, Jinan 250100, Peoples R China
推荐引用方式
GB/T 7714Liu, QQ,Song, JM,Ma, T,et al. Effects of drying pretreatments on the analysis of the mercury fraction in sediments[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2019,191(10):607.
APALiu, QQ,Song, JM,Ma, T,Jiang, M,Ma, GX,&Sheng, YQ.(2019).Effects of drying pretreatments on the analysis of the mercury fraction in sediments.ENVIRONMENTAL MONITORING AND ASSESSMENT,191(10),607.
MLALiu, QQ,et al."Effects of drying pretreatments on the analysis of the mercury fraction in sediments".ENVIRONMENTAL MONITORING AND ASSESSMENT 191.10(2019):607.
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