Fadare Oluniyi O, Okoffo Elvis D, Olasehinde Emmanuel F
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, 20 Cornwall Street, Woolloongabba, QLD 4102, Australia.
Mar Pollut Bull. 2021 Mar;164:112006. doi: 10.1016/j.marpolbul.2021.112006. Epub 2021 Jan 20.
The presence of micro/plastic particles has been reported in various seafood products. However, information on microplastics contamination in salts from African continent is very limited. This study analysed 23 brands of table salts from 8 African countries for microplastics using microscopic/spectroscopic techniques. South Africa showed the highest microplastics concentration (0-1.33 ± 0.32 particles/kg), Nigeria, Cameroun, and Ghana (0-0.33 ± 0.38 particles/kg each); characterized as polyvinyl acetate, polypropylene, and polyethylene. Other countries have no detectable microplastics at 0.3 μm filter pore size. To our best knowledge, this is the first study to characterize micro-fibres/plastics in table salts across African countries, confirming that it is an emission source of micro-fibres/plastics into the human food chain, highlighting the overarching need to understand their effects on human health.
已有报道称,各种海产品中存在微塑料颗粒。然而,关于非洲大陆盐类中微塑料污染的信息非常有限。本研究采用显微镜/光谱技术,对来自8个非洲国家的23个品牌的食用盐进行了微塑料分析。南非的微塑料浓度最高(0 - 1.33 ± 0.32颗粒/千克),尼日利亚、喀麦隆和加纳(各为0 - 0.33 ± 0.38颗粒/千克);其特征为聚醋酸乙烯酯、聚丙烯和聚乙烯。在0.3μm的过滤孔径下,其他国家未检测到微塑料。据我们所知,这是第一项对非洲各国食用盐中的微纤维/塑料进行表征的研究,证实了食用盐是微纤维/塑料进入人类食物链的一个排放源,凸显了了解其对人类健康影响的迫切需求。