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...
核农学报  2012 

γ辐照降解水中四环素的研究

, PP. 888-893

Keywords: γ辐照,四环素,降解,·OH自由基

Full-Text   Cite this paper   Add to My Lib

Abstract:

研究了γ辐照对水中四环素(TC)的降解作用,探讨了TC初始浓度、溶液pH值,以及联合H2O2、CH3OH对其辐照降解效果的影响。结果表明γ辐照可有效降解水中TC。在酸性和碱性条件下,TC降解效果均有明显提高,其中以pH=9时TC去除率最高。添加H2O2可在一定程度上促进TC的γ辐照降解率;而添加CH3OH则明显抑制TC的γ辐照降解。通过量化计算和液质联用(LC-MS)分析发现,γ辐照降解水中TC主要是基于·OH自由基的氧化过程。

References

[1]  刘 虹,张国平,刘丛强. 贵阳城市污水及南明河中氯霉素和四环素类抗生素的特征[J]. 环境科学,2009,30(3):687-692
[2]  刘 伟,王 慧,陈小军. 抗生素在环境中降解的研究进展[J]. 动物医学进展,2009,30(3):89-94
[3]  程雪梅,苏青云,胡炎明. 液相色谱-串联质谱法分析海产品中四环素类药物残留[J]. 质谱学报,2009,30(2):74-77
[4]  Gomez P C V,Sanchez P M,Rivera U J. Tetracycline removal from waters by integrated technologies based on ozonation and biodegradation[J]. Chemical Engineering Journal,2011,178:115-121
[5]  Ilza D,Mariana O A,Rodinei A. Monitoring the degradation of tetracycline by ozone in aqueous medium via atmopheric pressure ionization mass spectrometry[J]. American Society for Mass Spectrometry,2007,18:679-687
[6]  李国亭,郭宇杰,汪宁改. 高锰酸钾降解四环素的过程研究[J]. 华北水利水电学院学报,2009,30(5):77-79
[7]  Sadulla R,Allayarov,Sergey V. Degradation of g-irradiated linear perfluoroalkanes at high dosage[J]. Journal of Fluorine Chemistry,2007,128:575-586
[8]  Yu S Q,Hu J,Wang J L. Gamma radiation-induced degradation of p-nitrophenol (PNP) in the presence of hydrogen peroxide (H2O2) in aqueous solution[J]. Journal of Hazardous Materials, 2010,177:1061-1067
[9]  Hoign J,Bader H. Rate constants of reactions of ozone with organic and inorganic compounds in water-(II):dissociating organic compounds[J]. Water Research,1983,17(2):185-194
[10]  Zheng B G,Zheng Z, Zhang J B. Degradation of the emerging contaminant ibuprofen in aqueous solution by gamma irradiation[J]. Desalination,2011,276:379-385
[11]  Bruce J R,Paul K S L,Michael M. Emerging chemicals of concern: pharmaceuticals and personal care products (PPCPs) in Asia,with particular reference to Southern China[J]. Marine Pollution Bulletin,2005,50(9): 913-920
[12]  Brij V,John V H,Richard D R. Behaviour and fate of tetracycline in river and wet land waters on the canadian northern great plains [J]. Journal of Environmental Science and Health,Part A,2007,42:109-117
[13]  武 庭,周 敏,郭宏栋. 四环素在黄土中的吸附行为[J]. 环境科学学报,2008,28(11): 2311-2314
[14]  穆容心,李丽媛,邵 芸,王家宏,许昭怡,郑寿荣. TiO2纳米棒对四环素的光催化降解[J]. 环境化学,2010,29(3):476-480
[15]  Vedenyapina M D,Eremicheva Y N,Pavlov V A. Electrochemical degradation of tetracycline[J]. Russian Journal of Applied Chemistry,2008,81(5):800-802
[16]  Guo Z B,Zheng Z,Gu C H. Gamma irradiation-induced removal of low-concentration nitrite in aqueous solution[J]. Radiation Physics and Chemistry,2008,77:702-707
[17]  Joonseon J, Song W H, William J C. Degradation of tetracycline antibiotics: Mechanisms and kinetic studies for advanced oxidation/reduction processes[J]. Chemosphere,2010,78:533-540
[18]  Getoff N. Factors influencing of radiation-induced degradation of water pollutants[J]. Radiation Physics and Chemistry,2002,65:437-446
[19]  Basfar A A,Khan H M,Al-Shahrani A A. Trihalomethane treatment using gamma irradiation: kinetic modeling of single solute and mixtures[J]. Radiation Physics and Chemistry,2005,72:555-563

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133