安徽花山尾矿库溃坝污染农田土壤中As、Sb的释放及垂向迁移特征

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 近岸生态与环境实验室

	安徽花山尾矿库溃坝污染农田土壤中As、Sb的释放及垂向迁移特征
	蔡永兵 1,2; 邵俐 1; 范行军 1,2; 李飞跃 1,2; 孟凡德 1,2; 张华 3
刊名	环境化学
	2020
卷号	39 期号:9 页码:2479-2489
关键词	矿区农田土壤释放迁移
ISSN号	0254-6108
其他题名	Study on the release and vertical migration characteristics of As and Sb in farmland soil contaminated by dam break of Huashan tailings pond,Anhui,China
文献子类	Article
英文摘要	Recent years,tailings pond dam leakage and break accidents arising from extreme weather happened frequently,causing serious pollution to the surrounding farmland by tailings with high content of heavy metals. This study was to investigate the release and transport behavior of arsenic and antimony after the tailings entered the soil,and assess its potential pollution risks furtherly. The contents of arsenic and antimony in the surface and profile soil of a small antimony gold mining area in Anhui province were analyzed. Column leaching experiments were also carried out using the contaminated soil. The farmland soil in the study area was seriously polluted by arsenic and antimony. The contents of arsenic and antimony in the surface soil of the contaminated farmland were (14111.4) mg·kg~(-1) and (1045.2) mg·kg~(-1),respectively,which were 12 and 85 times higher than their background value in Chinese soil,and also significantly higher than the control soil. The soil pollution reached the level of heavy pollution. Despite similar geochemical properties,the vertical migration of As and Sb showed different characteristics. Antimony in soil was mainly distributed in the surface layer,and its content decreased gradually with the increase of depth. In addition to high content in surface layer (113 mg·kg~(-1)),arsenic content showed a maximum value at the depth of 60 cm (114 mg·kg~(-1)). This indicated that arsenic and antimony in surface contaminated soils would gradually migrate downward,and the migration capacity of arsenic was higher than that of antimony. Under leaching conditions of different pH and phosphorus concentrations,the release intensity of arsenic was significantly greater than that of antimony. The maximum release concentrations of arsenic and antimony were 1151 mug·L~(-1) and 10 mug·L~(-1) under different pH conditions. The maximum release concentrations of arsenic and antimony were 1277 mug·L~(-1) and 170 mug·L~(-1),respectively,when leaching with different phosphorus solutions. The application of phosphate fertilizer could promote the release of arsenic and antimony in the soil contaminated by tailings,which increased a potential ecological risk.
语种	中文
CSCD记录号	CSCD:6824882
资助机构	安徽省自然科学基金 ; 国家自然科学基金 ; 安徽省高校自然科学研究项目 ; 大学生创新创业训练计划项目
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/30330]
专题	烟台海岸带研究所_近岸生态与环境实验室
作者单位	1.安徽科技学院资源与环境学院,凤阳233100; 2.生物炭与农田土壤污染防治安徽省重点实验室,蚌埠233400; 3.中国科学院烟台海岸带研究所,海岸带环境过程与生态修复重点实验室,烟台264000
推荐引用方式 GB/T 7714	蔡永兵,邵俐,范行军,等. 安徽花山尾矿库溃坝污染农田土壤中As、Sb的释放及垂向迁移特征[J]. 环境化学,2020,39(9):2479-2489.
APA	蔡永兵,邵俐,范行军,李飞跃,孟凡德,&张华.(2020).安徽花山尾矿库溃坝污染农田土壤中As、Sb的释放及垂向迁移特征.环境化学,39(9),2479-2489.
MLA	蔡永兵,et al."安徽花山尾矿库溃坝污染农田土壤中As、Sb的释放及垂向迁移特征".环境化学 39.9(2020):2479-2489.