Changes in the heavy metal distributions in whole soil and aggregates affected by the application of alkaline materials and phytoremediation

doi:10.1039/c7ra05670b

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 生物制氢与沼气团队

	Changes in the heavy metal distributions in whole soil and aggregates affected by the application of alkaline materials and phytoremediation
	Xu, Lei 1,2,3; Cui, Hongbiao 4; Zheng, Xuebo ; Zhou, Jun 1,2,3; Zhang, Wenhui 1,2,3; Liang, Jiani 1,2; Zhou, Jing 1,2,5,6
刊名	RSC ADVANCES
	2017
卷号	7 期号:65 页码:41033-41042
DOI	10.1039/c7ra05670b
文献子类	Article
英文摘要	To explore the combined remedy effect of alkaline materials and plants on the distribution of heavy metals in whole soil and aggregates, a 3 year in situ experiment was carried out in a dual copper (Cu)/cadmium (Cd)-contaminated farmland in this study. Treatment was applied by the addition of soda residue (11.2 t ha(-1)), apatite (22.3 t ha(-1)), or lime (4.45 t ha(-1)), respectively, into the heavy metals-contaminated soil as a single application; Elsholtzia splendens was continually planted for 3 years in all the experimental plots. The total metals amounts and distributions of Cu and Cd in the whole soil and aggregates were then investigated. Our results showed that (1) although the total concentrations of Cu and Cd were slightly increased in the whole soil, their exchangeable concentrations were significantly reduced in both abovementioned treatments; (2) all the abovementioned 3 treatments significantly increased the stability of the dry and wet aggregates when compared with the control treatment; (3) similar to the whole soil, combined remediation groups slightly increased the concentrations of Cu and Cd in the aggregates, but decreased their available and exchangeable concentrations observably. Specifically, the highest concentrations of Cu and Cd were found in the aggregates sized <0.053 mm; however, mass loadings of Cu and Cd were observed in the 0.053-0.25 mm and 0.25-2 mm sized fractions, respectively; moreover, the treatments increased the mass loading of Cu and Cd in the aggregates sized >0.25 mm. In total, the combined remediation adopted in our study dramatically decreased the available concentrations of both Cu and Cd in the whole soil and aggregates. The distribution variations of Cu and Cd caused by passivator-plant combined remediation in the whole soil might be because more metal ions have been transformed into less mobile fractions, whereas the heavy metal distribution differences in the aggregates might be not only correlated with the size of the soil wet aggregates, but also possibly controlled by the soil organic carbon.
WOS关键词	PARTICLE-SIZE FRACTIONS ; CONTAMINATED SOILS ; ORGANIC-MATTER ; RIVER DELTA ; PADDY SOILS ; LAND-USE ; CU ; AMENDMENTS ; CHINA ; ZN
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000409096300043
资助机构	National Basic Research Program of China(2013CB934302) ; National Science and Technology Support Plan(2015BAD05B01) ; National Natural Science Foundation of China(41571461 ; 41601340)
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/9740]
专题	青岛生物能源与过程研究所_生物制氢与沼气团队
作者单位	1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Natl Engn & Technol Res Ctr Red Soil Improvement, Red Soil Ecol Expt Stn, Liujiazhan Plantat, Yingtan 335211, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Anhui Univ Sci & Technol, Sch Earth & Environm, Huainan 232001, Peoples R China 5.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Shandong Ind Engn Lab Biogas Prod & Utilizat, Key Lab Biofuels, Qingdao 266101, Peoples R China 6.Jiangxi Acad Sci, Jiangxi Engn Res Ctr Ecoremediat Heavy Met Pollut, Nanchang 330096, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Xu, Lei,Cui, Hongbiao,Zheng, Xuebo,et al. Changes in the heavy metal distributions in whole soil and aggregates affected by the application of alkaline materials and phytoremediation[J]. RSC ADVANCES,2017,7(65):41033-41042.
APA	Xu, Lei.,Cui, Hongbiao.,Zheng, Xuebo.,Zhou, Jun.,Zhang, Wenhui.,...&Zhou, Jing.(2017).Changes in the heavy metal distributions in whole soil and aggregates affected by the application of alkaline materials and phytoremediation.RSC ADVANCES,7(65),41033-41042.
MLA	Xu, Lei,et al."Changes in the heavy metal distributions in whole soil and aggregates affected by the application of alkaline materials and phytoremediation".RSC ADVANCES 7.65(2017):41033-41042.