城镇污水处理厂中β-内酰胺类抗生素的分布与迁移

The distribution and migration of β-lactam antibiotics in municipal treatment plant

本文采用固相萃取-高效液相色谱法分析研究了城镇污水处理厂中6种β-内酰胺类抗生素（阿莫西林、普鲁卡因、头孢克洛、头孢曲松、头孢噻肟、头孢唑啉）的分布与迁移。结果表明,β-内酰胺类抗生素在进水和出水中的含量分别为0.956～2.967μg/L和0～1.988μg/L。阿莫西林、普鲁卡因、头孢克洛、头孢曲松、头孢噻肟和头孢唑啉的平均去除率分别为100%、34.8%、37.9%、22.0%、47.8%、63.2%,其中阿莫西林和头孢唑啉的去除率最高。通过物料衡算,β-内酰胺类抗生素迁移途径主要为降解和污泥吸附。

The distribution and migration of 6 kinds od β - lactam antibiotics （ amoxicillin, procaine hydrochloride, cefaclor, ceftriaxone, cefotaxime, cefazolin） in municipal treatment plant were ana- lyzed and studied in this paper by SPE - HPLC. The results showed that the contents of β - lactam antibiotics in influent and effluent were 0.956 ～ 2. 967μg/L and 0 ～ 1. 988μg/L , respectively. The average removal rates of amoxicillin, procaine hydrochloride, cefaclor, ceftriaxone, cefotaxime, ce- fazolin were 100% ,34.8% ,37.9% ,22.0% ,47.8% ,63.2% , respectively. The average removal rates of amoxicillin and cefazolin were higher than others. The main migration pathes of β -lactam antibiotics were degradation and sludge adsorption.