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DOI	10.1016/j.marpolbul.2020.111223
	Preferential adsorption of Cd; Cs and Zn onto virgin polyethylene microplastic versus sediment particles
	Besson M.; Jacob H.; Oberhaensli F.; Taylor A.; Swarzenski P.W.; Metian M.
发表日期	2020
ISSN	0025326X
卷号	156
英文摘要	Plastic pollution has become a major environmental concern worldwide, and marine ecosystems have become polluted with ubiquitous microplastic particles (MP). MP can contain chemical additives and can also scavenge pollutants from the surrounding environment, and these co-contaminants may threaten the marine biota when MP become inadvertently ingested and transferred up the food chain. However, our understanding of the sorption-desorption kinetics of chemical compounds bound to MP remains limited. Moreover, whether MP are better transport vectors of co-contaminants than other natural particles (e.g. sediment) has not received much attention. Here, we used radiotracers to examine the partition coefficients (Kd) of three trace metals (109Cd, 134Cs, and 65Zn) to virgin MP (32–75 μm polyethylene beads) and to natural sediment particles of a similar size (35–91 μm) in seawater. After 72 h, sediment particles adsorbed 2.5% of 109Cd, 68.0% of 134Cs, and 71.0% of 65Zn, while MP adsorbed <0.8% of these three elements. Results highlight that under these experimental conditions, virgin polyethylene MP may not be effective transport vectors for these trace metals. Important variations in Kd were observed between elements, inciting for further studies to decipher how chemical characteristics, MP composition, and associated-biofilms, all interact in these biokinetic processes. These results demonstrate how radiotracers can allow us to address important knowledge gaps and broaden our understanding regarding the interactions between waterborne contaminants, naturally occurring particles and marine wildlife. © 2020 Elsevier Ltd
语种	英语
scopus关键词	Additives; Aliphatic compounds; Cesium; Ecosystems; Microplastic; Polyethylenes; Radioactive tracers; Sediments; Trace elements; Zinc; Chemical characteristic; Environmental concerns; Experimental conditions; Microplastic particles; Partition coefficient; Preferential adsorption; Surrounding environment; Water-borne contaminants; Marine pollution; cadmium; cadmium 109; cesium; cesium 134; microplastic; polyethylene; sea water; zinc; zinc 65; cadmium; plastic; polyethylene; zinc; cadmium; cesium; desorption; numerical model; partition coefficient; plastic waste; sediment pollution; zinc; adsorption; Article; biofilm; case study; desorption; partition coefficient; sediment; weathering; adsorption; ecosystem; water pollutant; Adsorption; Cadmium; Ecosystem; Microplastics; Plastics; Polyethylene; Water Pollutants, Chemical; Zinc
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148904
作者单位	International Atomic Energy Agency, Environment Laboratories, 4a, Quai Antoine 1erMC-98000, Monaco; EPHE, PSL Research University, USR3278 UPVD-CNRS, CRIOBE, Moorea, French Polynesia
推荐引用方式 GB/T 7714	Besson M.,Jacob H.,Oberhaensli F.,et al. Preferential adsorption of Cd; Cs and Zn onto virgin polyethylene microplastic versus sediment particles[J],2020,156.
APA	Besson M.,Jacob H.,Oberhaensli F.,Taylor A.,Swarzenski P.W.,&Metian M..(2020).Preferential adsorption of Cd; Cs and Zn onto virgin polyethylene microplastic versus sediment particles.Marine Pollution Bulletin,156.
MLA	Besson M.,et al."Preferential adsorption of Cd; Cs and Zn onto virgin polyethylene microplastic versus sediment particles".Marine Pollution Bulletin 156(2020).