Prata Joana C, Silva Ana L Patrício, da Costa João P, Dias-Pereira Patrícia, Carvalho Alexandre, Fernandes António José Silva, da Costa Florinda Mendes, Duarte Armando C, Rocha-Santos Teresa
Centre for Environmental and Marine Studies (CESAM) & Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
Centre for Environmental and Marine Studies (CESAM) & Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
Animals (Basel). 2022 Aug 4;12(15):1979. doi: 10.3390/ani12151979.
Companion animals living in urban areas are exposed to environmental contaminants, which may include microplastics. A preliminary study was conducted by collecting postmortem samples from the internal tissue (lungs, ileum, liver, kidney, and blood clots) of 25 dogs () and 24 cats () living in an urban environment in Porto metropolitan area, Portugal. Suspected microplastics were found in 80 samples from 35 animals (18 cats and 17 dogs), often occurring in more than one tissue of the same animal (71.4%), primarily under small sizes (50.3% as 1-10 µm). Micro-Raman spectroscopy confirmed a fraction of particles as common polymer types (e.g., polyethylene terephthalate). However, the number of particles was very low. This study highlights the possibilities of the internalization and distribution of microplastics in the internal tissues of terrestrial vertebrates.
生活在城市地区的伴侣动物会接触到环境污染物，其中可能包括微塑料。通过收集来自葡萄牙波尔图大都市区城市环境中25只狗（）和24只猫（）的内部组织（肺、回肠、肝脏、肾脏和血凝块）的死后样本进行了一项初步研究。在来自35只动物（18只猫和17只狗）的80个样本中发现了疑似微塑料，通常出现在同一动物的多个组织中（71.4%），主要是小尺寸的（50.3%为1 - 10微米）。显微拉曼光谱证实了一部分颗粒为常见的聚合物类型（如聚对苯二甲酸乙二酯）。然而，颗粒数量非常少。这项研究突出了微塑料在陆生脊椎动物内部组织中的内化和分布情况。
