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	Quantifying the adsorption and uptake of CuO nanoparticles by wheat root based on chemical extractions
	Zhou, Dongmei; Jin, Shengyang; Li, Lianzhen; Wang, Yu; Weng, Nanyan
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2011
卷号	23期号:11页码:1852-1857
关键词	CuO-NPs root surface adsorption uptake
ISSN号	1001-0742
DOI	10.1016/S1001-0742(10)60646-8
通讯作者	Zhou, Dongmei(dmzhou@issas.ac.cn)
英文摘要	Extensive application of metal nanoparticles is attracting more attention because of their potential environmental risks. Many studies have focused on the uptake of metal nanoparticles (NPs) by plant, but the adsorption of nanoparticles on root surface is often mistakenly regarded as their uptake. This study optimized the methods to distinguish the adsorption and uptake of CuO-NPs on the wheat root by applying different metal competing ions (Na+, Mg2+, and La3+), surfactant (i.e., sodium dodecyl benzene sulfonate, SDBS), or complexing agents like NaOAc and Na(4)EDTA, as well as ultrasonic technique. The results indicated that some CuO-NPs is strongly adsorbed on the plant root surface, and part of them by mechanical adhesion. Competing ions could not desorb the CuO-NPs from the root surface, while NaOAc and Na(4)EDTA well dissolved the adsorbed CuO-NPs. In addition, the uptake and adsorption of CuO-NPs increased with increasing exposure concentrations of CuO-NPs in the range of 5-200 mg/L. The amount of CuO-NPs adsorption is always lower than that of their uptake.
收录类别	SCI
WOS关键词	PHYTOTOXICITY
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000297179100013
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2559061
专题	南京土壤研究所
通讯作者	Zhou, Dongmei
作者单位	Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Dongmei,Jin, Shengyang,Li, Lianzhen,et al. Quantifying the adsorption and uptake of CuO nanoparticles by wheat root based on chemical extractions[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2011,23(11):1852-1857.
APA	Zhou, Dongmei,Jin, Shengyang,Li, Lianzhen,Wang, Yu,&Weng, Nanyan.(2011).Quantifying the adsorption and uptake of CuO nanoparticles by wheat root based on chemical extractions.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,23(11),1852-1857.
MLA	Zhou, Dongmei,et al."Quantifying the adsorption and uptake of CuO nanoparticles by wheat root based on chemical extractions".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 23.11(2011):1852-1857.

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