Optimization of pretreatment procedure for MeHg determination in sediments and its applications

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	Optimization of pretreatment procedure for MeHg determination in sediments and its applications
	Ji, Xiaonan ; Liu, Chengbin ; Shi, Jianbo ; Pan, Gang
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2019-06
卷号	26 期号:17 页码:17707-17718
关键词	Methylmercury Sediment Pretreatment Moisture content Organic matter Acid volatile sulfide
ISSN号	0944-1344
英文摘要	Methylmercury (MeHg) in sediment is difficult to be determined due to its low concentration and binding compounds like sulfide and organic matter. Moreover, wet sediment samples have been suggested to behave differently from certified reference materials in MeHg analysis. Optimal pretreatment procedure for MeHg determination in sediments has not been ascertained and whether the procedure could apply to sediment samples with complex matrix merits further research. This work firstly compared recovery results of five pretreatment procedures for MeHg determination using ERM-CC580. Using the optimal pretreatment procedure, recovery results were analyzed in different sediment samples after manipulation of moisture content, organic matter, and acid volatile sulfide. The procedure using CuSO4/HNO3 as leaching solutions and mechanical shaking as extraction method was proved to produce the most satisfactory recovery results (100.67 +/- 6.75%, mean +/- standard deviation). And when moisture content varied from 20 to 80%, average recovery results in sediment samples ranged from 100 to 125%. Furthermore, before and after the manipulation of organic matter or acid volatile sulfide, spiking recovery results varied little and were all within acceptable limit (85 similar to 105%). Therefore, the procedure of CuSO4/HNO3-mechanical is proposed as a universal pretreatment method for MeHg determination in sediment samples with various characteristics.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43203]
专题	生态环境研究中心_环境纳米材料实验室
作者单位	1.Chinese Acad Sci, Beijing Adv Sci & Innovat Ctr, Beijing 101407, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Nottingham Trent Univ, Sch Anim Rural & Environm Sci, Ctr Integrated Water Energy Food Studies iWEF, Brackenhurst Campus, Nottingham NG25 0QF, England
推荐引用方式 GB/T 7714	Ji, Xiaonan,Liu, Chengbin,Shi, Jianbo,et al. Optimization of pretreatment procedure for MeHg determination in sediments and its applications[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2019,26(17):17707-17718.
APA	Ji, Xiaonan,Liu, Chengbin,Shi, Jianbo,&Pan, Gang.(2019).Optimization of pretreatment procedure for MeHg determination in sediments and its applications.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,26(17),17707-17718.
MLA	Ji, Xiaonan,et al."Optimization of pretreatment procedure for MeHg determination in sediments and its applications".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26.17(2019):17707-17718.