Oxidative degradation kinetics and products of chlortetracycline by manganese dioxide
文献类型：期刊论文
| 作者 | Chen, Gao1,2; Zhao, Ling1,2; Dong, Yuan-hua1,2 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2011-10-15 |
| 卷号 | 193页码:128-138 |
| 关键词 | Abiotic degradation Chlortetracycline delta-MnO(2) Kinetics Products |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2011.07.039 |
| 通讯作者 | Zhao, Ling(zhaoling@issas.ac.cn) |
| 英文摘要 | This study investigated the abiotic transformation kinetics of chlortetracycline (CTC) by synthesized delta-MnO(2) under conditions of different solutions. CTC was rapidly oxidized by delta-MnO(2), with the generation of Mn(2+). The measured CTC transformation rate increased considerably with an increase in initial delta-MnO(2) concentration but it decreased as the initial CTC concentration increased. Both the measured CTC transformation rate and the amount of Mn(2+) generated decreased with increasing pH. The CTC transformation rate rose with an increase in temperature. The apparent activation energy (45 +/- 14 kJ mol(-1)) was consistent with a surface-controlled reaction. Dissolved Mn(2+) and Zn(2+), as background cations, and substituted phenols, as co-solutes, remarkably decreased the transformation rate of CTC. Liquid chromatography-tandem mass spectrometry (LC-MS-MS) was used to identify oxidation products, which include iso-CTC, 4-epi-CTC, anhydro-CTC and 4-epi-anhydro-CTC, keto-CTC, 4-epi-keto-CTC. N-demethyl-CTC, 4-epi-N-demethyl-CTC, N-didemethyl-CTC and 4-epi-N-didemethyl-CTC. Product identification together with Fourier transform-infrared (FTIR) spectra suggested that the hydroxyl groups at C6 and C12 and the dimethylamine group of CTC reacted with the Mn-OH groups on the delta-MnO(2) surface. Thus, delta-MnO(2) in the soils most probably plays an important role in the abiotic transformation of tetracycline antibiotics. (C) 2011 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | PERFORMANCE LIQUID-CHROMATOGRAPHY ; SULFONAMIDE ANTIMICROBIAL AGENTS ; TETRACYCLINE-RESISTANT-BACTERIA ; SOIL INTERSTITIAL WATER ; ANTIBACTERIAL AGENTS ; VETERINARY ANTIBIOTICS ; HUMIC CONSTITUENTS ; MASS-SPECTROMETRY ; TRANSFORMATION ; OXIDE |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000296317500017 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559083 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhao, Ling |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China 2.Inst Soil Sci, Chinese Acad Sci Hong Kong Baptist Univ ISSAS HKB, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Gao,Zhao, Ling,Dong, Yuan-hua. Oxidative degradation kinetics and products of chlortetracycline by manganese dioxide[J]. JOURNAL OF HAZARDOUS MATERIALS,2011,193:128-138. |
| APA | Chen, Gao,Zhao, Ling,&Dong, Yuan-hua.(2011).Oxidative degradation kinetics and products of chlortetracycline by manganese dioxide.JOURNAL OF HAZARDOUS MATERIALS,193,128-138. |
| MLA | Chen, Gao,et al."Oxidative degradation kinetics and products of chlortetracycline by manganese dioxide".JOURNAL OF HAZARDOUS MATERIALS 193(2011):128-138. |
入库方式： iSwitch采集
来源：南京土壤研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。