|
| Effects of Aqueous Solution Properties on Tylosin Photolysis |
| Received:June 24, 2014 |
| View Full Text View/Add Comment Download reader |
| KeyWord:antibiotic;tylosin(TYL);photolysis;pH;humic acid |
| Author Name | Affiliation | E-mail | | ZHANG Qian | School of Life and Environmental Science, Guilin University of Electronic Technology, Guilin 541000, China | | | YANG Chen | College of Environment and Energy, South China University of Technology, Guangzhou 510006, China | | | MO De-qing | School of Life and Environmental Science, Guilin University of Electronic Technology, Guilin 541000, China | | | LI Lin | School of Life and Environmental Science, Guilin University of Electronic Technology, Guilin 541000, China | | | GUO Xue-tao | School of Earth and Environmental Science, Anhui University of Science and Technology, Huainan 232001, China | | | SHU Xiao-hua | College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541000, China | sxh-9911@163.com |
|
| Hits: 2780 |
| Download times: 2538 |
| Abstract: |
| Photolysis can influence the behaviors of tylosin(TYL), a common veterinary macrolide antibiotic, in the environment. It is also one of the most important ways to remove TYL from the environment. However, TYL photolysis is affected by the properties of aqueous solution. In this paper, a laboratory-scale photochemical reaction device was employed to investigate the photochemical behaviors of TYL in solution under UV light condition. The photochemical degradation of TYL was examined at various initial concentrations of TYL, NO3- and humic acid, and pH values. The results showed that the degradation of TYL within 6 hours was about 50% at the initial TYL concentration of 10 mg·L-1. Alkaline condition enhanced TYL photolysis. However, elevated initial TYL, NO3- and humic acid concentrations inhibited TYL photolysis. Nitrate and humic acid might compete light absorption with TYL, thus suppressing TYL photolysis. The present results suggest that direct photolysis might be the major way of TYL degradation in the natural aqueous system. |
|
|
|
