E-beam degradation of thiamphenicol and florfenicol

LOW ENERGY ACCELERATORS AND RADIATION APPLICATIONS

E-beam degradation of thiamphenicol and florfenicol

ZHOU Jiaxin，

WU Minghong，

XU Gang，

MA Jing，

WANG Liang，

LIU Ning

Nuclear Science and Techniques

Vol.21, No.6

pp.334-338

Published in print 20 Dec 2010

DOI：10.13538/j.1001-8042/nst.21.334-338

34101

Thiamphenicol (THA) and florfenicol (FLO) aqueous solutions were irradiated to different doses by 1 MeV electron beams, and redox reactions of THA/FLO and radicals of ^·OH, e_aq⁻ and ^•H were investigated under various conditions. The results showed that at 8 kGy, the decomposition rate of THA and FLO was 97.2% and 98.5%, respectively. Quantitative and qualitative analysis indicated that ^·OH played a key role in E-beam degradation of the THA and FLO in aqueous solutions, and e_aq⁻ and ^•H radicals could initiate the degradation, too. Seven primary products of the THA and FLO degradation were identified. These indicate that E-beam radiation is an effective method to reduce THA and FLO in aqueous solutions.

ThiamphenicolFlorfenicolE-beam irradiationMechanism

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