DOI: 10.1016/j.marpolbul.2018.04.027
Scopus记录号: 2-s2.0-85045740880
论文题名: The sorption kinetics and isotherms of sulfamethoxazole with polyethylene microplastics
作者: Xu B. ; Liu F. ; Brookes P.C. ; Xu J.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2018
卷: 131 起始页码: 191
结束页码: 196
语种: 英语
英文关键词: Dissolved organic matter
; Microplastics
; pH
; Salinity
; Sorption
; Sulfamethoxazole
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Microplastics and sulfamethoxazole coexist ubiquitously in the marine environment, and microplastics tend to sorb organic pollutants from the surrounding environment. Here, the sorption kinetics and isotherms of sulfamethoxazole on polyethylene (PE) microplastics closely fitted a pseudo-second-order model (R2 = 0.98) and linear model (R2 = 0.99), respectively, indicating that the sorption process was partition-dominant interaction. The main binding mechanism was possibly the van der Waals interaction for hydrophilic sulfamethoxazole onto hydrophobic PE microplastics. The effects of pH, dissolved organic matter and salinity on sorption behavior were also studied. The sorption behavior of sulfamethoxazole on PE microplastics was not significantly influenced by pH and salinity, probably because the electrostatic repulsion played a minor role. In addition, the negligible effect of dissolved organic matter was attributed to the greater affinity of sulfamethoxazole to PE microplastics than to dissolved organic matter. Our results demonstrated that PE microplastics may serve as a carrier for sulfamethoxazole in the aquatic environment. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88283
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Institute of Soil and Water Resources and Environmental Science, College of Environment and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou, 310058, China
Recommended Citation:
Xu B.,Liu F.,Brookes P.C.,et al. The sorption kinetics and isotherms of sulfamethoxazole with polyethylene microplastics[J]. Marine Pollution Bulletin,2018-01-01,131