Microplastic quantification affected by structure and pore size of filters

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Microplastic quantification affected by structure and pore size of filters
	Cai, Huiwen; Chen, Mengdi; Chen, Qiqing; Du, Fangni; Liu, Jingfu; Shi, Huahong
刊名	CHEMOSPHERE
	2020-10
卷号	257 页码:1-8
关键词	Microplastic Filter Structure Pore size Quantification
ISSN号	0045-6535
英文摘要	Filters of various structures (filter by pore depth or pore width) and pore sizes are used to extract microplastics (<5 mm) in researches. In present study, we demonstrate that filters with different structures and pore sizes can lead to different outcomes in microplastic filtering. Our results showed that when filtering large-sized microplastics, nylon filter (double-layer-hole type) retained nearly 100% of fibers, while polycarbonate filter (single-layer-hole type) only retained 61.7%. Polycarbonate filter retained the most fragments (80.8%), while cotton fiber filter (multilayer-hole type) retained the least (54.4%). Pellets were retained on different layers of nylon and cotton fiber filters, and could not be quantified accurately. Additionally, the sizes of some fibers and fragments captured were not within the expected ranges by lattice-knitting filters. Large fiber (3568.0 mu m) was not filtered out after 1000 mu m pore-size filtration. Small fragment (37.2 mu m) was found on 50 mu m pore-size filters. To validate laboratory results, filed waters containing microplastics (similar to 90% in form of fibers) were filtered through different pore-size filters. As expected, the relationship between abundance and pore size followed a same trend as that in laboratory fiber samples. Thereby, our results indicated that filter structure and pore size could affect the abundances of microplastics with different shapes. To obtain more accurate abundance of microplastics in a wide size range, and to consider filtration duration, size limitation of observation, and spatial resolution of identification instrument, we recommend that water samples should be filtered using 20 mu m pore-size filters with a double-layer-hole type of structure. (C) 2020 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44737]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Cai, Huiwen,Chen, Mengdi,Chen, Qiqing,et al. Microplastic quantification affected by structure and pore size of filters[J]. CHEMOSPHERE,2020,257:1-8.
APA	Cai, Huiwen,Chen, Mengdi,Chen, Qiqing,Du, Fangni,Liu, Jingfu,&Shi, Huahong.(2020).Microplastic quantification affected by structure and pore size of filters.CHEMOSPHERE,257,1-8.
MLA	Cai, Huiwen,et al."Microplastic quantification affected by structure and pore size of filters".CHEMOSPHERE 257(2020):1-8.