摘要
[目的]探索能够有效去除农业废水中药品与个人护理用品(PPCPs)的有效手段.[方法]选取水环境中频繁检出的5种代表性PPCPs(阿昔洛韦、苯基苯并咪唑磺酸、盐酸环丙沙星、盐酸左氧氟沙星和甲砜霉素)作为目标化合物,采用竞争反应动力学法测定了5种PPCPs与·OH反应的速率常数.[结果]25℃条件下,阿昔洛韦、苯基苯并咪唑磺酸、盐酸环丙沙星、盐酸左氧氟沙星和甲砜霉素与羟基自由基反应速率常数分别为(3.66±0.237)×109、(5.36±0.189)×109、(6.02±0.646)× 109、(5.91±0.249)×109和(4.94±0.660)×109 mol/(L·s),相关系数分别为0.995、0.999、0.998、0.993、0.992.[结论]利用羟基自由基消除农业废水中的PPCPs是一种有效可行的方法,能降低PPCPs的生态风险.
Abstract
[Objective] To explore the effective means to remove the pharmaceuticals and personal care products (PPCPs) in agricultural waste water.[Method] Five representative PPCPs in water environment were used as target compounds,such as acyclovir,phenylbenzimidazole sulfonic acid,ciprofloxacin,levofloxacin hydrochloride and thiamphenicol.Speed constants of five PPCPs with · OH were detected by competition reaction dynamic research method.[Result] Under 25 ℃,reaction rate constants of acyclovir,phenylbenzimidazole sulfonic acid,ciprofloxacin,levofloxacin hydrochloride and thiamphenicol to · OH were (3.66 ± 0.237) × 109,(5.36 ± 0.189) × 109,(6.02 ±0.646) × 109,(5.91 ± 0.249) × 109 and (4.94 ± 0.660) × 109 mol/(L · s),respectively.Their correlation coefficients were 0.995,0.999,0.998,0.993 and 0.992,respectively.[Conclusion] Using · OH to remove the PPCPs in agricultural waste water is an effective and feasible method to remove PPCPs in agricultural wastewater,which reduces the ecological risks of PPCPs.
国家科技期刊平台
NSTL
维普
万方数据