全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

磺胺嘧啶在黑土及其不同粒径组分中的吸附行为研究

Keywords: 磺胺嘧啶,黑土,吸附,pH值,阳离子交换,有机质

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用批平衡吸附试验法,研究了磺胺嘧啶在黑土及其不同粒径中的吸附行为。结果表明,磺胺嘧啶的吸附不同程度地偏离线性模型,但均可用Freundlich模型和Langmuir模型进行良好地线性拟合。黑土(<0.2mm)及其不同粒径(粘粒:<0.002mm、粉粒:0.002~0.02mm、砂粒:0.02~0.2mm)的Freundlich容量因子Kf值分别为29.6、53.1、32.9L·kg-1和21.6L·kg-1,说明磺胺嘧啶在黑土及其不同粒径中的吸附行为存在差异。将吸附参数Kf进行碳标化处理后,Koc值除粉粒外,其他基本一致。随着溶液pH的持续增加(1.0~10.0),黑土及其不同粒径中的磺胺嘧啶的吸附参数lgKf呈现先急剧降低然后稍微回升的趋势,由此推测,阳离子交换作用可能是磺胺嘧啶土壤吸附的重要机制。过氧化氢处理去除土壤有机质后,黑土的Kd值从1.92L·kg-1降为1.22L·kg-1,磺胺嘧啶的吸附量由16.5mg·kg-1降低到11.2mg·kg-1,说明有机质含量也是影响磺胺嘧啶吸附行为的重要因素。

References

[1]  Lu Y;Han S K;Zhang C D,Sorption of the herbicide mefenacet in soils,Environmental Contamination and Toxicology,2001(01).
[2]  Thiele-Bruhn S;Soibicke T;Schuhan H R,Sorption of Sulfonamide Pharmaceutical Antibiotica on Whole Soils and Particle-Size Fractions J,Journal of Environmental Quality? ,2004, 33.
[3]  Johannes Tolls,Sorption of veterinary pharmaceuticals in soils: a review,Environmental Science & Technology?,2001, 35(17).
[4]  JUAN GAO ;JOEL A. PEDERSEN,Adsorption of Sulfonamide Antimicrobial Agents to Clay Minerals,Environmental Science & Technology?,2005, 39(24).
[5]  ZHANG Jie;LI Zhao-jun;GE Gao-fei,Impacts of soil organic matter,pH and exogenous copper on sorption behavior of norfloxacin in three soils,Environmental Sciences,2008(05).
[6]  刘忠珍,丁草胺与土壤及土壤组分作用机理的研究,杭州:浙江大学,2007.
[7]  OECD,OECD guidelines for testing of chemicals,test guideline 106:adserption/desorption using a batch equilibrium method,Paris:OECD,Revised Draft Document,2000.
[8]  鲁如坤,土壤农业化学分析方法,北京:中国农业科技出版社,2000.
[9]  Huang W;Sehlaautman M A;Weber Jr W J,A distributed reactivity model for sorption by soils and sediments.5.The influence of near-surface characteristics in mineral domains,Environmental Science and Technology,1996(12).
[10]  Boxall AlistairB A ;Blackwell Paul ;Cavallo Romina ;Kay Paul ;Tolls Johannes,The sorption and transport of a sulphonamide antibiotic in soil systems.,Toxicology Letters?,2002, 131(1/2).
[11]  Elena M C;Carmen G B;Scharf S,Environment monitoring study of selected veterinary antibiotics in animal manure and soih in Austria,Environmental Pollution,2007(02).
[12]  张从良,磺胺类药物环境行为及相关热力学基础研究,郑州:郑州大学,2007.
[13]  Thiele-Bruhn S,Pharmaceutical antibiotic compounds in soils:A review,Plant Nutrition and Soil Science,2003(02).
[14]  Hailing-Sorensen B;Nielsen S N;[anzky P F,Occurrence,fate and effects of pharmaceutical substances in the environment:A review,Chemosphere,1998(02).
[15]  HEIKE SCHMITT ;PATRICK VAN BEELEN ;JOHANNES TOLLS ;CORNELIS L. VAN LEEUWEN,Pollution-Induced Community Tolerance of Soil Microbial Communities Caused by the Antibiotic Sulfachloropyridazine,Environmental Science & Technology?,2004, 38(4).
[16]  Sarmah H;Meyer M T;Boxall A B A,A global perspective on the use sales exposure pathways occurrence fate and effects of veterinary antibiotics (VAs) in the environment,Chemosphere? ,2006, 65(05).
[17]  Thide-Bruhn S;Beck I C Effects of sulfonamide and tetracycline antibiotics on soil microbial activity and microbial biomass [J] 2005(04) doi:10.1016/j.chemosphere.2005.01.023

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133