Effects of drying pretreatments on the analysis of the mercury fraction in sediments

doi:10.1007/s10661-019-7799-z

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 山东省海岸带环境工程技术研究中心

	Effects of drying pretreatments on the analysis of the mercury fraction in sediments
	Liu, QQ ; Song, JM ; Ma, T ; Jiang, M ; Ma, GX ; Sheng, YQ
刊名	ENVIRONMENTAL MONITORING AND ASSESSMENT
	2019-10
卷号	191 期号:10 页码:607
关键词	Sediments Mercury Pretreatment Drying methods Sequential extraction procedures Metal fraction
ISSN号	0167-6369
DOI	10.1007/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
文献子类	Article
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.
WOS关键词	TRACE-METAL CONTAMINATION ; SAMPLE PRETREATMENT ; INORGANIC MERCURY ; SURFACE SEDIMENTS ; SPECIATION ; ACID ; SULFUR ; EXTRACTIONS ; TEMPERATURE ; ESTUARINE
WOS研究方向	Environmental Sciences
语种	英语
WOS记录号	WOS:000484944000004
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]
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24850]
专题	烟台海岸带研究所_山东省海岸带环境工程技术研究中心烟台海岸带研究所_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.Univ Chinese Acad Sci, Beijing, Peoples R China; 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai, Peoples R China; 3.Shandong Acad Environm Sci Co Ltd, Jinan 250100, Peoples R China
推荐引用方式 GB/T 7714	Liu, 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.
APA	Liu, 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.
MLA	Liu, QQ,et al."Effects of drying pretreatments on the analysis of the mercury fraction in sediments".ENVIRONMENTAL MONITORING AND ASSESSMENT 191.10(2019):607.