过硫酸盐降解土壤中氯霉素、甲砜霉素和氟甲砜霉素的研究  

Degradation of chloramphenicol,thiamphenicol and florfenicol with persulfate in soil system

作　　者：周佳欣[1] 姚春霞[1] 孙明星 白冰[1] 周昌艳[1] ZHOU Jia-xin;YAO Chun-xia;SUN Ming-xing;BAI Bing;ZHOU Chang-yan(Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403 ,China;Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 200135, China)

机构地区：[1]上海市农业科学院农产品质量标准与检测技术研究所,上海201403 [2]上海市出入境检验检疫局,上海200135

出　　处：《上海农业学报》2018年第3期11-15,共5页Acta Agriculturae Shanghai

基　　金：上海市科技兴农重点攻关项目[沪农科攻字(2015)第4-1号;沪农科攻字(2016)第4-5号];崇明科技攻关项目(CKS2016-08)

摘　　要：过硫酸盐经金属离子活化产生硫酸根自由基,可高效降解土壤中的氯霉素、甲砜霉素和氟甲砜霉素。通过考察反应体系的初始pH条件、确定活化金属离子以及过硫酸盐与金属离子的投入比例等试验条件,确定最佳反应参数。结果表明:当酸性条件下,pH为3,选取亚铁离子作为土壤降解的活化金属离子,过硫酸钾:Fe2+:氯霉素类抗生素的摩尔质量比为40∶20∶1时,氯霉素、甲砜霉素、氟甲砜霉素降解率分别为80.9%、79.2%和78.4%,降解效果最佳。Sulfate redical generated by activating persulfate with transition metal ions can be used to degradethe chloramphenicol,thiamphenicol and florfenicol in soil. The optimal condition of degradation was investigated.The result indicated that when the pH value and persulfate∶ Fe2＋∶ contaminants molar ratio were 3 and 40∶ 20∶ 1,the highest reduction rate of chloramphenicol,thiamphenicol and florfenicol which were 80. 9%,79. 2% and78. 4% respectively.

关 键 词：过硫酸盐 氯霉素类抗生素 高级氧化技术 

分 类 号：S153[农业科学—土壤学]