期刊
ENVIRONMENTAL POLLUTION
卷 243, 期 -, 页码 228-237出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2018.08.032
关键词
Microplastics; Sediment; Quantification; Characterization; Bay of biscay; mu FT-IR
资金
- BASEMAN project (CSA Oceans 2, UE H2020) [696324]
- region Pays de la Loire, France (Miplaqua project)
- PhuTho college of Medecine and Pharmacy
- government of Vietnam, Vietnam
The ubiquitous presence of microplastics (MPs) has been demonstrated in all environmental compartments in the recent years. They are detected in air, freshwater, soil, organisms and particularly in marine ecosystems. Since sediments are known to be the major sink of many organic and inorganic pollutants, the aim of this study was to develop and validate a fast and cheap methodology to assess the MP contamination in intertidal sediments from the Gulf of Biscay (Pays de la Loire region, France). Sediments were sampled at three locations (Pays de la Loire region, France) and during two seasons: October 2015 and March 2016. The analytical protocol involved MP extraction from dried sediments using milliQ water and a centrifugation technique. After a filtration step of supernatants, MPs were detected and directly identified on the membrane filters using mu FTIR spectroscopy in reflection mode. For the first time, the number of replicates allowing to obtain a satisfying representativeness of the whole sampled sediment was also evaluated at 10 replicates of 25 g each. The average number of MPs in sediments was 67 (76) MPs/kg dw (N = 60) with no significant difference between sites and seasons. Ten different compositions of MPs were defined by mu FT-IR with a high proportion of polypropylene (PP) and polyethylene (PE), 38 and 24%, respectively. Among MPs, mainly fragments (84%) were observed with main size classes corresponding to [>100 mu m] and [50-100 mu m] but no particles > 1 mm could be found suggesting that mainly small microplastics (<1 mm) were subject to vertical transport. (C) 2018 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据