期刊
MARINE POLLUTION BULLETIN
卷 171, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.112805
关键词
Microplastics; Floatable plastic particles; Freshwater; Po River; Polymer composition
资金
- Unife through a FIR-2018
The study found that the Po river carries a substantial load of floatable plastic particles, with the majority being microplastics and composed mainly of polyethylene, polypropylene, and polystyrene. Plastic concentrations varied between months and were correlated with the hydraulic regime.
We investigated the temporal concentration of floatable plastic particles in the Po river, the largest contributor of freshwater to the Adriatic Sea. Surface waters were sampled in 2019 with a Manta trawl, with almost bimonthly frequency. In total, 5063 plastic particles were collected, 80.6% of which were microplastics (<5 mm). Characterization through FT-IR spectroscopy evidenced 7 polymers, of which polyethylene, polypropylene and polystyrene accounted for 40.5%, 25.7%, and 14.9%, respectively. The highest plastic concentration was recorded in December (3.47 particles m(-3); 5.89 mg m(-3)), while the lowest in August (0.29 +/- 0.01 particles m(-3); 0.22 +/- 0.08 mg m(-3)). We estimated the annual load of floatable plastic particles carried by the Po river to be 145 tons. Plastic particle load was correlated with the hydraulic regime, and was higher in autumn and spring months.
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