Interactive effects of sulfadiazine and Cu(II) on their sorption and desorption on two soils with different characteristics

doi:10.1016/j.chemosphere.2015.07.049

	Interactive effects of sulfadiazine and Cu(II) on their sorption and desorption on two soils with different characteristics
	Xu, Yonggang; Yu, Wantai; Ma, Qiang; Zhou, Hua
刊名	CHEMOSPHERE
	2015-11-01
卷号	138 页码:701-707
关键词	Sorption Desorption Soil Sulfadiazine Copper
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2015.07.049
英文摘要	Antibiotics and heavy metals often coexist in soils due to land application of animal wastes and other sources of inputs. The aim of this study is to evaluate the interaction of Cu(II) and sulfadiazine (SDZ) regarding to their sorption and desorption on Brown soil (BS, luvisols) and Red soil (RS, Udic Ferrosols) using batch experiments. The presence of Cu(II) significantly enhanced sorption of SDZ on BS at pH > 5.0, and this trend increased with increasing pH, which was mainly ascribed to the formation of ternary complexes of Cu-SDZ-soil and/or SDZ-Cu-soil. In contrast, Cu(II) only slightly increased SDZ sorption on RS at pH < 5.0 due to the decrease of equilibrium solution pH, whereas it hardly affected SDZ sorption at pH > 5.0 because RS had high oxides contents and low affinity for Cu(II). In addition, Cu(II) inhibited SDZ desorption from BS but promoted SDZ desorption from RS, which was related to their different sorption mechanisms. The presence of SDZ exerted no significant effect on the sorption of Cu(II) on the two soils at pH < 6.5 because of its low sorption coefficients (Ka), while slightly decreased Cu(II) sorption at pH > 6.5 by forming water-soluble complexes. Furthermore, SDZ had little effect on Cu(II) desorption from the two soils at natural pH. These results indicate that soil characteristics strongly influence the interactions of Cu(II) and SDZ on their sorption and desorption on soils. (C) 2015 Elsevier Ltd. All rights reserved.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000361772800092
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122209]
专题	中国科学院沈阳应用生态研究所
通讯作者	Yu, Wantai
作者单位	Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Xu, Yonggang,Yu, Wantai,Ma, Qiang,et al. Interactive effects of sulfadiazine and Cu(II) on their sorption and desorption on two soils with different characteristics[J]. CHEMOSPHERE,2015,138:701-707.
APA	Xu, Yonggang,Yu, Wantai,Ma, Qiang,&Zhou, Hua.(2015).Interactive effects of sulfadiazine and Cu(II) on their sorption and desorption on two soils with different characteristics.CHEMOSPHERE,138,701-707.
MLA	Xu, Yonggang,et al."Interactive effects of sulfadiazine and Cu(II) on their sorption and desorption on two soils with different characteristics".CHEMOSPHERE 138(2015):701-707.