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采用超声提取-固相萃取-高效液相色谱串联质谱技术分析配套养殖体系粪便、水体和沉积物中4种磺胺类(SAs)、2种四环素类(TCs)、2种大环内酯(MLs)和2种喹诺酮类(QLs)抗生素的含量和分布特征.研究结果显示,在水体中共检出8种抗生素,浓度在ND—382 ng·L-1,2种四环素类抗生素未被检出,且水体中抗生素的浓度呈现旱季高于雨季;沉积物中共检出7种抗生素,其浓度分别在ND—3400μg·kg-1范围内,磺胺嘧啶(SDZ)、磺胺甲噁唑(SMX)和罗红霉素(RTM)未被检出;在猪粪和鸭粪中均检出甲氧苄啶(TMP)、诺氟沙星(NFX)、脱水红霉素(ETM-H2O)和罗红霉素(RTM),同时猪粪中还检出2种四环素类,鸭粪中检出磺胺二甲嘧啶(SMZ)和环丙沙星(CFX),其中鸭粪中甲氧苄啶的最高浓度达到6.11 mg·kg-1.研究结果表明,不同介质中抗生素的含量存在一定差异,其中磺胺类抗生素在水体中浓度最高,喹诺酮类和四环素类在沉积物中的浓度最高;粪便中抗生素的种类与施药的种类密切相关,并且可能会加剧抗生素对水体环境的污染.
The concentrations of four sulfonamides (SAs), two kinds of tetracyclines (TCs), two kinds of macrolides (MLs) in the manure, water and sediment of the mating culture system were analyzed by using ultrasonic extraction-solid phase extraction-high performance liquid chromatography tandem mass spectrometry ) And two kinds of quinolones (QLs) antibiotics.The results showed that 8 kinds of antibiotics were detected in water, the concentrations of ND-382 ng · L-1 and 2 kinds of tetracycline antibiotics were not detected, The concentration of antibiotics in the water body was higher than that in the rainy season in the dry season. Seven antibiotics were detected in the sediments, and the concentrations were in the ranges of ND-3400μg · kg-1, SDZ, SMX, Erythromycin (RTM) was not detected. Trimethoprim (TMP), norfloxacin (NFX), erythromycin dehydrate (ETM-H2O) (RTM). Two kinds of tetracyclines were also detected in swine manure. Sulfamethazine (SMZ) and ciprofloxacin (CFX) were detected in duck feces. The highest concentration of trimethoprim in duck feces reached 6.11 mg · kg-1. The results showed that the antibiotics in different media there are some differences in content, of which the highest concentrations of sulfonamides in water, quinolones and tetracyclines in the The highest concentrations in sediments; antibiotics in the stool species is closely related to the type of pesticide application, and may exacerbate the pollution of antibiotics on the water environment.