江西省畜禽养殖废水及环境中抗生素残留现状调查

Pollution of Antibiotics in Livestock Wastewater and the Environmental Water in Jiangxi Province

[目的]调查江西省畜禽养殖废水及环境中抗生素残留现状。[方法]建立了高效液相色谱串联四极杆质谱对四环素(TC)、金霉素(CTC)、磺胺二甲嘧啶(SMT)、磺胺甲噁唑(SMX)、诺氟沙星(NFC)、氧氟沙星(OFC)6种抗生素的检测方法,对江西省南昌县12个规模化养猪场养殖废水及下游水环境样品进行调查。[结果]6种抗生素在养殖废水中都有检出,最大检出浓度分别为0.110、0.135、0.106、0.181、0.024和0.911μg/L,以氧氟沙星最高;在下游水环境检出率分别为58.3%、33.3%、66.7%、75.0%、41.7%和100.0%,氧氟沙星检出率最高。[结论]下游水环境中抗生素残留量总体低于养殖废水,四环素类和磺胺类抗生素在少数养殖场下游环境水体中有一定富集。

[ Objective] The research aimed to study antibiotics pollution in livestock wastewater and the environmental water in Jiangxi Prov- ince. [ Method ] A method for the determination of tetracycline （ TC）, chlortetracycline （CTC）, strlfamethazine （SMT）, sulfamethoxazole （SMX）, norfloxacin （NFC） and ofloxacin （OFC） in environmental water samples was developed by using high performance liquid chromatography-mass spectrometry （HPLC-MS/MS）. The samples of livestock wastewater and the downstream environmental water were collected from 12 pig farms in Nanchang County of Jiangxi. [ Result ] 6 kinds of antibiotics in livestock wastewater have been checked out, and the maximum detection concentra- tions in livestock wastewater were 0. 110,0. 135,0. 106,0. 181,0. 024 and 0.911 μg/L for TC,CTC,SMT,SMX,NFC and OFC respectively,in which OFC had the highest detection concentration. The detection rates in downstream environmental water were 58.3%, 33.3%, 66.7%, 75.0% ,41.7% and 1130.0% for TC, CTC, SMT, SMX, NFC and OFC respectively,in which OFC had the highest detection rate. [ Conclusion ] The residual amounts of antibiotics in downstream water environment were lower than that in the livestock wastewater,and tetracyclines and sul- fonamides antibiotics had certain enrichment in the downstream environmental water of a few farms.