[1]李 群,周 艳,张胜田,等.红壤对污染土壤中砷的修复性能研究[J].南京师范大学学报(工程技术版),2020,(01):076-83.[doi:10.3969/j.issn.1672-1292.2020.01.011]
 Li Qun,Zhou Yan,Zhang Shengtian,et al.Remediation Effects of Arsenic-Contaminated Soil by Red Soil[J].Journal of Nanjing Normal University(Engineering and Technology),2020,(01):076-83.[doi:10.3969/j.issn.1672-1292.2020.01.011]
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红壤对污染土壤中砷的修复性能研究
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年01期
页码:
076-83
栏目:
环境科学与工程
出版日期:
2020-03-15

文章信息/Info

Title:
Remediation Effects of Arsenic-Contaminated Soil by Red Soil
文章编号:
1672-1292(2020)01-0076-08
作者:
李 群12周 艳12张胜田12万金忠12郑丽萍12冯艳红12王风贺3范婷婷12
(1.生态环境部南京环境科学研究所,江苏 南京 210042)(2.国家环境保护土壤环境管理与污染控制重点实验室,江苏 南京 210042)(3.南京师范大学环境学院,江苏 南京 210023)
Author(s):
Li Qun12Zhou Yan12Zhang Shengtian12Wan Jinzhong12Zheng Liping12Feng Yanhong12Wang Fenghe3Fan Tingting12
(1.Nanjing Institute of Environmental Sciences,Ministry of Ecology and Environment,Nanjing 210042,China)(2.State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control,Nanjing 210042,China)(3.School of Environment
关键词:
红壤污染土壤有效性砷形态
Keywords:
red soilAscontaminated soilavailabilityAs fractionation
分类号:
X53
DOI:
10.3969/j.issn.1672-1292.2020.01.011
文献标志码:
A
摘要:
为探寻农田砷污染治理的绿色修复剂,以源自自然环境的红壤作为绿色修复剂材料,首先通过静态吸附实验研究红壤对水溶液中砷的吸附能力,其次通过向砷污染农田土壤中添加红壤,探讨红壤对污染土壤中砷的形态及其生物有效性的影响. 吸附实验结果表明,红壤对溶液中砷的吸附等温过程更符合Freundlich方程; 添加红壤可有效降低土壤中弱酸态砷和水溶态砷含量占百分比,但可氧化态砷含量占百分比显著增加; 弱酸态砷含量与红壤添加量呈显著负相关关系(R20.05=0.991). 此外,添加红壤后,污染土壤纯水和碳酸氢钠提取液中砷含量及污染土壤纯水提取液对发光菌的急性毒性显著降低,说明添加红壤可降低污染土壤中砷的生物有效性.
Abstract:
To seek a green amendment for arsenic(As)contaminated agricultural soil,red soil is used as green amendment for As in this study,which comes from the natural environment. Firstly,static adsorption experiment is performed to investigate the adsorption characteristics of As on red soil. Then the effects of the As availability and changes of As fractionations are investigated by adding red soil into the contaminated agricultural soils. The results of static adsorption experiment indicate that Freundlich adsorption isotherm model can better describe the isotherm process of adsorption. The percentage of exchangeable As and water-soluble As decreases,while the percentage of oxidizable As increases by adding red soil. The percentage of exchangeable As is negatively correlated with the amount of red soil(R20.05=0.991). Both extractable-As(with water or NaHCO3)and the acute toxicity to luminescent bacteria are decreased significantly after the addition of red soil,suggesting that the addition of red soil can reduce the bioavailability of As in the contaminated soil.

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备注/Memo

备注/Memo:
收稿日期:2018-07-28.
基金项目:国家自然科学基金项目(41473071)、江苏省普通高校自然科学研究重大项目(16KJA610001)、中央级公益性科研院所基本业务专项.
通讯作者:范婷婷,博士,助理研究员,研究方向:土壤污染控制与修复. E-mail:fantingting@nies.org
更新日期/Last Update: 2020-03-15