中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 几种土壤的氟吸附特性研究 农业环境科学学报 2003,22 (03) 74-77
Position: Home > Articles > Study on Adsorption Characters of Fluorine in Several Soils Journal of Agro-Environment Science 2003,22 (03) 74-77

几种土壤的氟吸附特性研究

作  者：
万红友;黎成厚;师会勤;周生路
单  位：
南京大学城市与资源学系;贵州大学农学院
关键词：
氟;吸附-解吸特性;影响因素
摘  要：
采用室内试验方法,研究了4种土壤对氟吸附的特性。结果表明:(1)不同土壤对氟的吸附能力差异很大,随着初始浓度的增大,吸附量明显增大,净吸附量、解吸量也增大,表现为黄壤>红壤>紫色土>石灰土;土壤氟的解吸率随初始浓度的增大而增大,不同土壤间大小次序是石灰土>紫色土>红壤>黄壤。(2)土壤吸附氟后的平衡溶液pH值随氟加入浓度的增大而上升,不同土壤间次序是:石灰土>红壤>紫色土>黄壤。(3)拟合结果表明,Langmuir方程能够较好地拟合土壤对氟的吸附等温线。(4)土壤中氧化物是氟的重要吸附剂,对土壤氟吸附有重要贡献。(5)低分子有机酸对氟吸附的影响一方面表现为阴离子的竞争作用,另一方面表现为酸性条件下的促进作用。
译  名：
Study on Adsorption Characters of Fluorine in Several Soils
作  者：
WAN Hong you1, LI Cheng hou2, SHI Hui qin2, ZHOU Sheng lu1(1.Department of Urban and Resources Sciences, Nanjing University, Nanjing 210093, China; 2.Agricultural College, Guizhou University, Guiyang 550025,China)
关键词：
fluorine; adsorption- desorption characters; influence factors
摘  要：
Adsorption characters of fluorine in several soils were studied in this article. The results showed that: (1) the soils studied had different ability of fluorine adsorption, the amount of adsorption, net adsorption and amounts desorbed increased with the increase of concentration, and in an order as: yellow soil>red soil>purple soil>calcareous soil. The desorbed rate of fluorine also increased with the increase of concentration, and in an order as: calcareous soil>purple soil >red soil >yellow soil. (2) The pH- value of equilibrium liquid increased with the increase of concentration, in an order as: calcareous soil > red soil > purple soil >yellow soil. (3) Langmuir equation was suitable to describe the adsorption of fluorine. (4) Soil oxides were the important absorbent for fluorine, had an important contribution on fluorine adsorption. (5) The effects of organic acid with low molecular weight on fluorine adsorption included competitive adsorption of negative ion and stimulative effect because of acid environment.

相似文章

导出引用
计量
文章访问数: 6
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46