Selective extraction and separation of non-residual components in the surficial sediments(surface coatings) and adsorption characteristics of Cu and Zn

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	Selective extraction and separation of non-residual components in the surficial sediments(surface coatings) and adsorption characteristics of Cu and Zn
	Yui, L; Wang, XL; Zheng, Z; Guo, SH; Yui, L, N China Elect Power Univ, Energy & Environm Res Ctr, Beijing 102206, Peoples R China
刊名	CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
	2006
卷号	27 期号:12 页码:2285-2290
关键词	Surficial Sediment Surface Coating Non-residual Fraction Selective Extraction Heavymetal Adsorption
ISSN号	0251-0790
英文摘要	The selective separation of non-residual components of surficial sediments (surface coatings) was performed via chemical extraction techniques and then Cu and Zn adsorption to the non-residual components and residual component of surficial sediments (surface coatings) were investigated. The results indicate that 0.1 mol/L NH2OH center dot HCl + 0.1 mol/L HNO3, (NH4)(2)C2O4-H2C2O4 buffer solution and 30% H2O2 could remove Mn oxides, Fe/Mn oxides and organic materials from the non-residual components of surficial. sediments (surface coatings) with the efficiency ranging from 63.15% to 97.59%, and the effects of extraction on nontarget components were negligible. Cu adsorption to the surficial sediments (surface coatings) and the individual component of surficial sediments (surface coatings) were much greater than those of Zn, and the adsorption capability of surficial sediments was much smaller than that of surface coatings. Furthermore, Cu and Zn adsorption to the non-residual components of surficial sediments (surface coatings) were much greater than those to residual component, and that the greatest contribution to metals adsorption on a molar basis was from Mn oxides in the non-residual component. Metals adsorption capacities of Mn oxides exceeded those of organic materials by two orders of magnitude, and the estimated contribution of the residual component to metals adsorption was insignificant. These results imply that the role of surface coatings in transformation and cycling of heavy metals in aquatic environments was more important than that of surficial sediments, and the relative importance for controlling heavy metals in aquatic environments was attributed to metal (Fe and Mn) oxides.
学科主题	Chemistry, Multidisciplinary
语种	中文
WOS记录号	WOS:000242962700011
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54789]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Yui, L, N China Elect Power Univ, Energy & Environm Res Ctr, Beijing 102206, Peoples R China
推荐引用方式 GB/T 7714	Yui, L,Wang, XL,Zheng, Z,et al. Selective extraction and separation of non-residual components in the surficial sediments(surface coatings) and adsorption characteristics of Cu and Zn[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2006,27(12):2285-2290.
APA	Yui, L,Wang, XL,Zheng, Z,Guo, SH,&Yui, L, N China Elect Power Univ, Energy & Environm Res Ctr, Beijing 102206, Peoples R China.(2006).Selective extraction and separation of non-residual components in the surficial sediments(surface coatings) and adsorption characteristics of Cu and Zn.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,27(12),2285-2290.
MLA	Yui, L,et al."Selective extraction and separation of non-residual components in the surficial sediments(surface coatings) and adsorption characteristics of Cu and Zn".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 27.12(2006):2285-2290.