Federal University of Paraná (UFPR), Center for Marine Studies (CEM), Av. Beira-Mar, s/n, 83255-976 Pontal do Paraná, Paraná, Brazil.
Mar Pollut Bull. 2022 Apr;177:113530. doi: 10.1016/j.marpolbul.2022.113530. Epub 2022 Mar 14.
Here we present the first assessment of microplastic (1-5 mm) abundance in drift line sediments from nineteen sandy beaches at the Paranaguá Estuarine Complex, a subtropical estuarine system from South Brazil. This estuarine system harbors Brazil's second-largest grain port, the Guaraqueçaba Environmental Protection Area, and a RAMSAR site. Sediment samples were washed through a 5 and 1 mm mesh sieve and then visually inspected. We found a total of 398 microplastic particles, of which the majority were foams (63.7%), hard plastic fragments (13.8%), paint fragments (12.8%), and pellets (7.2%). Almost all sampled beaches, including those located within the Guaraqueçaba Environmental Protection Area, were contaminated by microplastics. The most likely microplastic sources for the Paranaguá Estuarine Complex beaches are urban and port activities. However, small communities and marine sources may also contribute to microplastic presence.
我们在此介绍了巴西南部巴拉那瓜河河口复杂系统 19 处沙滩漂流线沉积物中微塑料（1-5 毫米）丰度的首次评估。该河口系统拥有巴西第二大谷物港口瓜拉奎巴环境保护区和拉姆萨尔湿地。沉积物样本通过 5 毫米和 1 毫米网筛进行清洗，然后进行肉眼检查。我们共发现了 398 个微塑料颗粒，其中大部分是泡沫（63.7%）、硬塑料碎片（13.8%）、油漆碎片（12.8%）和颗粒（7.2%）。几乎所有接受采样的海滩，包括瓜拉奎巴环境保护区内的海滩，都受到了微塑料的污染。巴拉那瓜河河口复杂系统海滩的微塑料最可能来源是城市和港口活动。然而，小社区和海洋来源也可能导致微塑料的存在。
