Distribution Characteristics of Antibiotics in the Middle Reaches of Fenhe River during Dry Season
In this study,LC/MS/MS was used to detect a total of 35 kinds of antibiotics beyond to five common classes(tetracycline,sulfonamides,macrolides,quinolones and chloramphenicol)in 45 sites in the middle reaches of Fenhe River during dry season.Among them,tetracycline antibiotics were not detected,and 16 kinds of antibiotics were detected beyond to the remaining four classes,with an order of sulfonamides,chloramphenicol,quinolones and macrolides.The concentrations ranged from 0.26 to 54.40 ng/mL,with the detection rates ranging from 2.2％to 84.4％.The overall antibiotic content of Fenhe river was East tributary＞West tributary＞Main stream,and sulfonamides were dominant in both main stream and tributaries.On the whole,the content of various antibiotics is low,and the environmental risk is low.
Dry seasonAntibioticsDistributionMiddle reaches of Fenhe river
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