干旱区生态环境知识资源中心(Arid): Copper Complexation by Dissolved Organic Matter in arid Soils: A Voltametric Study

Arid

DOI	10.3390/environments5110125
	Copper Complexation by Dissolved Organic Matter in arid Soils: A Voltametric Study
	Steinberg, Spencer M.; Hodge, Vernon F.
通讯作者	Steinberg, SM
来源期刊	ENVIRONMENTS
ISSN	2076-3298
出版年	2018
卷号	5 期号:11
英文摘要	A voltammetric method was used to estimate the complexing capacity of water extracts from both desert soils sampled at the root zone of creosote and salt cedar plants, and in soils from interspace or background regions where no vegetative influence was apparent. The copper complexing capacity of water extracts of these desert soils was influenced by contact time and pH. In soils from the root zones of creosote and salt cedar plant, copper complexation capacities at pH 8 were from 5 mu M to 60 mu M after five min contact periods, while 18 h contact periods yielded copper complexation capacities of 40 mu M-80 mu M. Soils with no vegetative influence had copper complexing capacities of less the 2 mu M. The copper complexing capacities of these soils are well correlated with the concentration of organic carbon in the water extract (r(2) = 0.86). The abundance of soluble organic matter in the root zone of desert shrubs has the potential to control the solution speciation of Cu2+. The formation of soluble complexes should also have an important influence on the plant uptake and transport of copper, as well as other heavy metals in the root zones of desert shrubs and beyond.
英文关键词	copper soluble organic matter humic substance creosote salt cedar
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	ESCI
WOS记录号	WOS:000451157800013
WOS关键词	TRACE-METAL SPECIATION ; WATERS ; MOBILIZATION ; VOLTAMMETRY ; SUBSTANCES ; ELECTRODES ; RIVER ; LEAD
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333087
作者单位	[Steinberg, Spencer M.; Hodge, Vernon F.] Univ Nevada, Dept Chem & Biochem, Las Vegas, NV 89154 USA
推荐引用方式 GB/T 7714	Steinberg, Spencer M.,Hodge, Vernon F.. Copper Complexation by Dissolved Organic Matter in arid Soils: A Voltametric Study[J],2018,5(11).
APA	Steinberg, Spencer M.,&Hodge, Vernon F..(2018).Copper Complexation by Dissolved Organic Matter in arid Soils: A Voltametric Study.ENVIRONMENTS,5(11).
MLA	Steinberg, Spencer M.,et al."Copper Complexation by Dissolved Organic Matter in arid Soils: A Voltametric Study".ENVIRONMENTS 5.11(2018).