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...
科学通报  2012 

水中(口恶)唑烷酮类抗生素利奈唑酮的光化学行为

, PP. 2469-2474

Keywords: 利奈唑酮,光降解,影响因素,反应类型,产物

Full-Text   Cite this paper   Add to My Lib

Abstract:

光化学降解是表层水体中抗生素类污染物的重要消减方式.研究了水中代表性(口恶)唑烷酮类抗生素利奈唑酮的光降解动力学、影响因素与转化产物.模拟日光(λ>290nm)照射下,利奈唑酮的光解遵循准一级反应动力学,纯水中表观光解量子产率为0.834±0.054;与纯水中相比,淡水、海水中光解较慢,这归因于水中常见溶解性物质的影响.pH,Cl–和海水盐度对光解动力学无显著影响(P>0.05),但腐殖酸、NO3–和Fe(III)通过光掩蔽等效应显著抑制其光降解.猝灭实验表明,模拟日光和UV-vis(λ>200nm)照射下,利奈唑酮发生了直接光解及1O2参与的自敏化光解,表现为光解速率常数与初始浓度呈负相关.两种光源照射下,主要光解产物和途径均有差别,UV-vis光照下主要发生了脱氟和光致水解,而在模拟日光照射下发生了吗啉环脱氢等反应.

References

[1]  4 葛林科, 张思玉, 谢晴, 等. 抗生素在水环境中的光化学行为. 中国科学: 化学, 2010, 40: 124-135
[2]  12 Boreen A L, Arnold W A, McNeill K. Photochemical fate of sulfa drugs in the aquatic environment: Sulfa drugs containing fivemembered heterocyclic groups. Environ Sci Technol, 2004, 38: 3933-3940??
[3]  13 Boreen A L, Arnold W A, McNeill K. Triplet-sensitized photodegradation of sulfa drugs containing six-membered heterocyclic groups: Identification of an SO2 extrusion photoproduct. Environ Sci Technol, 2005, 39: 3630-3638??
[4]  14 Werner J J, Arnold W A, McNeill K. Water hardness as a photochemical parameter: Tetracycline photolysis as a function of calcium concentration, magnesium concentration, and pH. Environ Sci Technol, 2006, 40: 7236-7241??
[5]  15 Ge L K, Chen J W, Wei X X, et al. Aquatic photochemistry of fluoroquinolone antibiotics: Kinetics, pathways, and multivariate effects of main water constituents. Environ Sci Technol, 2010, 44: 2400-2405??
[6]  18 Vasskog T. Occurrence of selected antidepressants in the Norwegian environment. Doctor Dissertation. Norway: University of Troms?,2008. 14-15
[7]  19 Fasani E, Tilocca F, Albini A. Photochemistry of oxazolidinone antibacterial drugs. Photochem Photobiol, 2009, 85: 879-885??
[8]  20 Dulln D, Mill T. Development and evaluation of sunlight actinometers. Environ Sci Technol, 1982, 16: 815-820??
[9]  23 Miolo G, Viola G, Vedaldi D, et al. In vitro phototoxic properties of new 6-desfluoro and 6-fluoro-8-methylquinolones. Toxicol In Vitro,2002, 16: 683-693??
[10]  25 Fisher J M, Reese J G, Pellechia P J, et al. Role of Fe(Ⅲ), phosphate, dissolved organic matter, and nitrate during the photodegradation of domoic acid in the marine environment. Environ Sci Technol, 2006, 40: 2200-2205??
[11]  26 Lam M W, Tantuco K, Mabury S A. PhotoFate: A new approach in accounting for the contribution of indirect photolysis of pesticides and pharmaceuticals in surface waters. Environ Sci Technol, 2003, 37: 899-907??
[12]  27 葛林科. 水中溶解性物质对氯霉素类和氟喹诺酮类抗生素光降解的影响. 博士学位论文. 大连: 大连理工大学, 2009. 56-70
[13]  1 Kummerer K. Antibiotics in the aquatic environment—A review. Part I. Chemosphere, 2009, 75: 417-434??
[14]  2 Schwarzenbach R P, Escher B I, Fenner K, et al. The challenge of micropollutants in aquatic systems. Science, 2006, 313: 1072-1077??
[15]  3 Segura P A, Francois M, Gagnon C, et al. Review of the occurrence of anti-infectives in contaminated wastewaters and natural and drinking waters. Environ Health Perspect, 2009, 117: 675-684??
[16]  5 贾瑷, 胡建英, 孙建仙, 等. 环境中的医药品与个人护理品. 化学进展, 2009, 21: 389-399
[17]  6 Edhlund B L, Arnold W A, McNeill K. Aquatic photochemistry of nitrofuran antibiotics. Environ Sci Technol, 2006, 40: 5422-5427??
[18]  7 Ge L K, Chen J W, Qiao X L, et al. Light-source-dependent effects of main water constituents on photodegradation of phenicol antibiotics: Mechanism and kinetics. Environ Sci Technol, 2009, 43: 3101-3107??
[19]  8 Latch D E, Packer J L, Stender B L, et al. Aqueous photochemistry of triclosan: Formation of 2,4-dichlorophenol, 2,8-dichlorodibenzo-pdioxin, and oligomerization products. Environ Sci Technol, 2005, 24: 517-525
[20]  9 Jiao S J, Zheng S R, Yin D Q, et al. Aqueous photolysis of tetracycline and toxicity of photolytic products to luminescent bacteria. Chemosphere, 2008, 73: 377-382??
[21]  10 Jung J, Kim Y, Kim J, et al. Environmental levels of ultraviolet light potentiate the toxicity of sulfonamide antibiotics in Daphnia magna. Ecotoxicology, 2008, 17: 37-45??
[22]  11 Li Y, Niu J F, Wang W L. Photolysis of enrofloxacin in aqueous systems under simulated sunlight irradiation: Kinetics, mechanism and toxicity of photolysis products. Chemosphere, 2011, 85: 892-897??
[23]  16 Zhang S Y, Chen J W, Qiao X L, et al. Quantum chemical investigation and experimental verification on the aquatic photochemistry of the sunscreen 2-phenylbenzimidazole-5-sulfonic acid. Environ Sci Technol, 2010, 44: 7484-7490??
[24]  17 Zhou J, Chen J W, Liang C H, et al. Quantum chemical investigation on the mechanism and kinetics of PBDE photooxidation by ·OH: A case study for BDE-15. Environ Sci Technol, 2011, 45: 4839-4845??
[25]  21 张正斌, 刘莲生. 海洋物理化学. 北京: 科学出版社, 1989
[26]  22 Buxton G V, Greenstock C L, Helman W P, et al. Critical review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (·OH/·O-) in aqueous solution. J Phys Chem Ref Data, 1988, 17: 513-886??
[27]  24 Cunningham V L, Constable D J C, Hannah R E. Environmental risk assessment of paroxetine. Environ Sci Technol, 2004, 38: 3351-3359??
[28]  28 Leifer A. The Kinetics of Environmental Aquatic Photochemistry: Theory and Practice. Washington DC: American Chemical Society,1988. 257-264
[29]  29 葛林科, 陈景文, 张思玉, 等. 水中氟喹诺酮类抗生素加替沙星的光降解. 科学通报, 2010, 55: 996-1001
[30]  30 Oka H, Ikai Y, Kawamura N. Photodecomposition products of tetracycline in aqueous solution. J Agric Food Chem, 1989, 37: 226-231??

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133