Institute of Marine Research (IMR), PO Box 1870 Nordnes, Bergen N-5817, Norway.
Department of Chemistry, University of Bergen, PO Box 7803, Bergen N-5020, Norway.
J Agric Food Chem. 2024 Nov 20;72(46):25481-25489. doi: 10.1021/acs.jafc.4c04721. Epub 2024 Nov 7.
Our work aimed to examine nanoparticle levels in 69 distinct pooled mussel samples along the Norwegian coastline, considering samples from different environmental contexts, including natural locations, potentially polluted hotspots, and mussel farms. Single-particle ICP-MS was utilized to determine particle mass and number concentrations at environmentally relevant levels in addition to the total content of 11 elements: aluminum, barium, cerium, copper, iron, manganese, lead, silicon, silver, titanium, and zirconium. Results showed nanoparticle mass concentrations of few ng/g up to tens of μg/g and number concentrations of 10 to 10 particles/g (wet weight). Certain urban and industrially impacted locations were linked to increased levels of, e.g., silver, lead, cerium, zirconium, and titanium NPs. Farmed mussels exhibited lower concentrations. However, natural variations were considerable, and impacted locations mostly did not differ from the highest levels in pristine areas. The study presents the first extensive survey of NPs of 11 different elements in marine biota and provides evidence of increased levels of NPs in areas with anthropogenic activities.
我们的工作旨在检测挪威海岸线 69 个不同贻贝样本中的纳米颗粒水平，考虑到来自不同环境背景的样本，包括自然地点、潜在污染热点和贻贝养殖场。利用单颗粒 ICP-MS 来测定环境相关水平下的颗粒质量和数量浓度，以及 11 种元素的总含量：铝、钡、铈、铜、铁、锰、铅、硅、银、钛和锆。结果表明，纳米颗粒的质量浓度为数 ng/g 至数十 μg/g，数量浓度为 10 至 10 颗粒/g（湿重）。某些城市和工业受影响的地点与银、铅、铈、锆和钛 NPs 的水平升高有关。养殖贻贝的浓度较低。然而，自然变化相当大，受影响的地点与原始地区的最高水平大多没有差异。该研究首次对海洋生物群中 11 种不同元素的 NPs 进行了广泛调查，并提供了在具有人为活动的地区 NPs 水平升高的证据。
