Evaluation of several phosphate amendments on rare earth element concentrations in rice plant and soil solution by X-ray diffraction

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 土壤环境科学实验室

	Evaluation of several phosphate amendments on rare earth element concentrations in rice plant and soil solution by X-ray diffraction
	Jin, Shulan ; Hu, Zhongjun ; Huang, Yizong ; Hu, Ying ; Pan, Huahua
刊名	CHEMOSPHERE
	2019-12-01
卷号	236 页码:-
关键词	Soil Rice Rare earth element Phosphate amendment Remediation
ISSN号	0045-6535
英文摘要	The exploitation and smelting of rare earth resources lead to serious pollution of rare earth elements (REEs) in farmland around mining area. The influence of four kinds of phosphate amendments phosphate rock (PR), superphosphate (SSP), bone char (BC), and calcium magnesium phosphate (CMP)-on the bioavailability of REEs and the uptake and accumulation of 15 types of REE in rice were conducted in this study. Soil solutions were collected at tillering stage, heading stage and maturing stage, and rice was harvested at maturing stage. The mechanism of phosphate amendments reducing the bioavailability of REEs was studied by X-Ray diffraction and ICP-MS. PR treatment inhibited rice growth, but SSP, BC and CMP treatments all promoted rice growth, improved biomass of roots, shoots and grains, and promoted the uptake of phosphorous in rice. When compared with the CK, SSP, BC and CMP reduced the total REE concentrations in rice roots by 82.2%, 67.9% and 89.6%, shoots by 75.4%, 40.1% and 65.5%, grains by 23.8%, 29.0% and 29.3%, respectively. PR, SSP, BC and CMP significantly reduced the concentrations of REEs in the soil solution at three stages of rice growth. Analytic results of X-ray diffraction shows that adding PR, SSP, BC and CMP can lead to the formation of rare earth phosphate in the soil, thus reduce the activity of the REEs in the soil. Because SSP releases H+ during its dissolution, which has the risk of activating REEs in soil, CMP and BC are potential materials for remediation of REE-contaminated soil. (C) 2019 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43297]
专题	生态环境研究中心_土壤环境科学实验室
作者单位	1.Minist Agr & Rural Affairs, Agroenvironm Protect Inst, 31 Kangfu Rd, Tianjin 300191, Peoples R China 2.Shangrao Normal Univ, Shangrao 334000, Peoples R China 3.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Jin, Shulan,Hu, Zhongjun,Huang, Yizong,et al. Evaluation of several phosphate amendments on rare earth element concentrations in rice plant and soil solution by X-ray diffraction[J]. CHEMOSPHERE,2019,236:-.
APA	Jin, Shulan,Hu, Zhongjun,Huang, Yizong,Hu, Ying,&Pan, Huahua.(2019).Evaluation of several phosphate amendments on rare earth element concentrations in rice plant and soil solution by X-ray diffraction.CHEMOSPHERE,236,-.
MLA	Jin, Shulan,et al."Evaluation of several phosphate amendments on rare earth element concentrations in rice plant and soil solution by X-ray diffraction".CHEMOSPHERE 236(2019):-.