Laboratory of Marine Geology, Institute of Geosciences, Department of Geology and Geophysics/LAGEMAR, Fluminense Federal University, Avenida Litorânea s/n, 24210-340 Niterói, RJ, Brazil.
Laboratory of Marine Geology, Institute of Geosciences, Department of Geology and Geophysics/LAGEMAR, Fluminense Federal University, Avenida Litorânea s/n, 24210-340 Niterói, RJ, Brazil.
Mar Pollut Bull. 2021 May;166:112225. doi: 10.1016/j.marpolbul.2021.112225. Epub 2021 Mar 4.
The ubiquitous presence of contaminants in the marine environment is considered a global threat to marine organisms. Heavy metals and microplastics are two distinct classes of pollutants but there are interactions between these two stressors that are still poorly understood. We examined the potential relationship between heavy metals (Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Cd, Ba, Hg, Pb) and microplastic particles in oysters sampled along the Paranaguá Estuarine System. The results suggested high levels of As and Zn in the bivalves, which are destined for human consumption. Microplastic particles were found in oysters from all sampled locations, demonstrating the spread of this pollutant in the marine environment and its ability to bioaccumulate in oysters. However, our data did not demonstrate a direct relationship between microplastics and heavy metals, suggesting that these particles are not the main route for heavy metal contamination of oysters in the Paranaguá Estuarine System.
海水中普遍存在污染物，被认为是对海洋生物的全球性威胁。重金属和微塑料是两类不同的污染物，但这两种胁迫因素之间的相互作用仍知之甚少。我们研究了沿巴拉那瓜河口水域系统采集的牡蛎中重金属（Al、Cr、Mn、Fe、Ni、Cu、Zn、As、Cd、Ba、Hg、Pb）和微塑料颗粒之间的潜在关系。结果表明，这些双壳类动物体内的 As 和 Zn 含量很高，这些双壳类动物将被人类食用。在所有采样地点的牡蛎中都发现了微塑料颗粒，这表明这种污染物在海洋环境中的传播及其在牡蛎体内的生物积累能力。然而，我们的数据并没有显示微塑料和重金属之间存在直接关系，这表明这些颗粒不是巴拉那瓜河口水域系统中牡蛎重金属污染的主要途径。
