Contamination characteristic and ecological risk of antibiotics in surface water of the Weihe Guanzhong
section. WEI Hong1, WANG Jia-wei1, YANG Xiao-yu1, SUN Bo-cheng1, LI Ke-bin2, ZHANG Jia-tong1
1. State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China;
2. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Chemistry and Material Science, Northwest University, Xi'an 710069, China
The antibiotics in surface water sample from Guanzhong section of Weihe River were analyzed by HPLC/MS/MS. Fifteen antibiotics belonging to five categories were detected with the detection rates of 12.5%~100%, and the concentration levels varied between nd and 270.60ng/L. The detected fifteen antibiotics included 7sulfonamides (SAs), 3macrolides(MLs), 3quinolones(QNs), 1lincosamides (LIN), and 1tetracyclines (TCs). The average concentrations of SAs, MLs, QNs, LIN, and TCs were found to be 113.68, 111.79, 20.55, 23.81 and 25.66ng/L, respectively. Compared with that in other water bodies in China, antibiotics in Weihe River was in the middle contaminated level. And SAs and MLs were the predominant antibiotics. The distribution of SAs in Weihe River showed upstream > midstream > downstream, while the MLs decreased in the order of midstream, downstream and upstream. The source apportionment indicated that livestock farming and aquaculture were mainly responsible for the higher MLs residue, while the domestic sewage and medical wastewater were contributed to SAs residue to a certain extent. The correlation analysis between antibiotic residues and water pollution factors showed that there were significant correlations between ETM (erythromycin) and total nitrogen (TN), (CFX) (ciprofloxacin) and (CTM) (clarithromycin) with ammonia nitrogen (NH3-N). In addition, risk quotient (RQ) indicated that CFX, OFX and SMX posed higher risk to corresponding species, while NFX, OTC, and RTM presented a moderate risk.
魏红, 王嘉玮, 杨小雨, 孙博成, 李克斌, 张佳桐. 渭河关中段表层水中抗生素污染特征与风险[J]. 中国环境科学, 2017, 37(6): 2255-2262.
section. WEI Hong, WANG Jia-wei, YANG Xiao-yu, SUN Bo-cheng, LI Ke-bin, ZHANG Jia-tong. Contamination characteristic and ecological risk of antibiotics in surface water of the Weihe Guanzhong. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(6): 2255-2262.
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