摘要
本研究重点考察了盐酸环丙沙星初始浓度、硝酸铅、硝酸镉、氯化铅、氯化镉等重金属盐对盐酸环丙沙星光降解性能影响.结果表明,黑暗条件下环丙沙星无降解;紫外光照可以有效去除环丙沙星,且环丙沙星的光降解速率随其初始浓度的增大而降低;硝酸铅和硝酸镉(除0.006 mmol·L^(-1)体系外)可以促进环丙沙星的光降解,且随摩尔比的增大(即硝酸盐浓度的降低),环丙沙星的半衰期逐渐增大;随着摩尔比的增大(即氯化盐浓度的降低),氯化铅和氯化镉先促进后抑制环丙沙星的光降解.
Effects of ciprofloxacin hydrochloride（CIP） initial concentration,Pb（NO3）2,Cd（NO3）2,PbCl2 and CdCl2 on the photodegradation of CIP using UV irradiation were investigated.The experiments results showed that UV irradiation could lead to effective removal of CIP,but there was no CIP degradation in dark.The photodegradation rate of CIP reduced with increasing initial concentration under UV irradiation.Pb（NO3）2 and Cd（NO3）2（except for the experiment group of 0.006 mmol·L^-1） could enhance CIP photodegradation,and the half-life of CIP gradually increased with increasing molar ratio between heavy metal and CIP（with the decreasing concentration of nitrate）.With increasing molar ratio（with the decreasing concentration of chlorate）,PbCl2 and CdCl2 first promoted and then inhibited the CIP photodegradation.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2016年第1期198-207,共10页
Environmental Science
基金
国家自然科学基金项目(41473071)
江苏高校优势学科建设工程资助项目
