Univ. Rennes, CNRS, Géosciences Rennes - UMR 6118, F-35000 Rennes, France.
Environ Sci Process Impacts. 2021 Apr 28;23(4):553-558. doi: 10.1039/d1em00017a.
Microplastics from the North Atlantic Gyre deposited on Guadeloupe beaches were sampled and characterized. A new method is developed to identify which elements were present as additives in these microplastics. The method used both acidic leaching and acidic digestion. Several elements (Al, Zn, Ba, Cu, Pb, Cd, Mn, Cr) were identified as pigments. Furthermore, some elements used as additives to plastics (especially the non-essential elements) seem to contribute to most of the acidic leaching, suggesting that these additives can leach and adsorb onto the surface microplastics, becoming bioavailable. Based on the acidic leaching element content, only Cd should represent a danger for fish when ingested. However, further studies are needed to determine the potential synergetic effect on health caused by the ingestion of several elements and microplastics.
采集和分析了沉积在瓜德罗普海滩上的北大西洋环流中的微塑料。开发了一种新方法来识别这些微塑料中哪些元素是作为添加剂存在的。该方法同时使用了酸浸和酸消解。鉴定出几种元素（Al、Zn、Ba、Cu、Pb、Cd、Mn、Cr）为颜料。此外，一些用作塑料添加剂的元素（特别是非必需元素）似乎对大部分酸浸出有贡献，这表明这些添加剂可以浸出并吸附在微塑料表面上，变得具有生物利用性。根据酸浸出元素含量，只有 Cd 在摄入时对鱼类构成危险。然而，需要进一步研究确定摄入几种元素和微塑料对健康可能产生的协同作用。
