【摘要】 研究了3种不同浓度的乳酸左氧氟沙星(LVF)在γ辐射、单阳膜电渗析(MAED)及协同技术处理下的降解。通过紫外吸收和不同水平的多重比较分析了pH、吸收剂量、MAED处理时间、处理顺序等因素的作用,同时对降解机理进行了初步探讨。试验表明,质量浓度10μg.mL-1的LVF溶液在单独γ射线的照射下能达到完全降解,协同技术可减少处理时间;100μg.mL-1的LVF溶液先MAED 60 min,再辐射吸收3 kGy,去除率可达94.6%;500μg.mL-1的LVF溶液先辐射吸收0.5 kGy,再MAED 30 min,去除率可达96%。单阳膜电渗析协同辐照可以有效减少处理时间和吸收剂量,降低成本、改善降解效果,为中高浓度抗生素的降解提供技术参考。更多还原

【Abstract】 Levofloxacin lactate(LVF) of three representative concentrations of antibiotics was employed as the targeted antibiotic to evaluate the degradation of irradiation,membrane technique and synergetic techniques.Some factors which affect the degradation rate: pH,irradiation,concentrations,treatment time were analyzed by UV-spectrometry of the different level,and the degradation mechanism was also speculated.It is concluded that the degradation rate of 10 μg·mL-1 LVF could lead to about 100% by one technique,and shorter time by synergetic treatment;100 μg·mL-1 was removed 94.6% with MAED for 60 min before 3 kGy irradiated;0.5 kGy and then MAED for 30 min made 500 μg·mL-1 LVF 96% degraded.Synergetic treatment with shorter time,lower dose and higher degradation will be a technical reference to the degradation of antibiotics.更多还原