Distribution, dynamics and determinants of antibiotics in soils in a peri-urban area of Yangtze River Delta, Eastern China

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	Distribution, dynamics and determinants of antibiotics in soils in a peri-urban area of Yangtze River Delta, Eastern China
	Zhao, Fangkai; Chen, Liding; Yang, Lei; Li, Shoujuan; Sun, Long; Yu, Xinwei
刊名	CHEMOSPHERE
	2018-11-01
卷号	211 页码:261-270
关键词	Antibiotics Land use Seasonal variation Spatial distribution
ISSN号	0045-6535
文献子类	Article
英文摘要	Antibiotics are increasingly recognized as anthropogenic contaminants in soils, and they can persist through a complex vicious cycle of transformation and bioaccumulation. In this study, we quantified 11 quinolones (QNs), 5 sulfonamides (SAs), 5 macrolides (MLs), and 4 tetracyclines (TCs) in soils at three soil layers (0-10, 10-20, 20-40 cm) in a typical peri-urban catchment in the Yangtze River Delta, Eastern China. The results showed that total antibiotic levels were significantly higher in cropland topsoil (p <0.05) compared to orchards and forests (p < 0.05). Moreover, a significant seasonal variation for antibiotic concentrations in croplands' topsoil were observed in the summer (50.59 +/- 84.55 ng/g) and winter (112.44 +/- 140.58 ng/g). Chlortetracycline (15.30 +/- 45.44 ng/g), enrofloxacin (0.43 +/- 0.93 ng/g), sulfamethazine (0.05 +/- 0.02 ng/g) and clarithromycin (0.03 +/- 0.03 ng/g) were detected with the highest frequencies within TCs, QNs, SAs, and MLs, respectively. Concentrations of TCs, QNs, and SAs decreased with increasing soil depth. The concentrations of TCs, QNs, and SAs were significantly affected by the intensity of human activities. According to the results of redundancy analysis (RDA), anthropogenic effects on the distribution of antibiotics in soils in winter were so strong that they dwarfed the effects of environmental factors. In summer, human activities and their interactions with environmental factors were the dominant contributors to variations in soil antibiotics. In addition, the results of RDA suggested that soil pH and organic matter closely correlated with the levels of antibiotics, and Actinobacteria was the predominant contributor to the biodegradation of antibiotics in this study area. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40514]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Zhao, Fangkai,Chen, Liding,Yang, Lei,et al. Distribution, dynamics and determinants of antibiotics in soils in a peri-urban area of Yangtze River Delta, Eastern China[J]. CHEMOSPHERE,2018,211:261-270.
APA	Zhao, Fangkai,Chen, Liding,Yang, Lei,Li, Shoujuan,Sun, Long,&Yu, Xinwei.(2018).Distribution, dynamics and determinants of antibiotics in soils in a peri-urban area of Yangtze River Delta, Eastern China.CHEMOSPHERE,211,261-270.
MLA	Zhao, Fangkai,et al."Distribution, dynamics and determinants of antibiotics in soils in a peri-urban area of Yangtze River Delta, Eastern China".CHEMOSPHERE 211(2018):261-270.