Characteristic of microplastics in the atmospheric fallout from Dongguan city, China: preliminary research and first evidence
Characteristic of microplastics in the atmospheric fallout from Dongguan city, China: preliminary research and first evidence
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中国东莞市大气沉降物中微塑料的特征：初步研究和初步证据
DOI：
10.1007/s11356-017-0116-x
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发表时间：
2017-11-01
影响因子：
5.8
通讯作者：
Chen, Qiuqiang
中科院分区：
文献类型：
--
作者：
Cai, Liqi;Wang, Jundong;Chen, Qiuqiang
近年来，微塑料污染已呈现出全球分布的态势，包括海洋、湖泊、河流以及陆地环境。然而，尽管之前有报道称塑料碎片会以风吹碎片的形式飘散，但大气环境却很少受到关注。因此，对东莞市大气沉降物中的微塑料特征进行了初步研究。鉴定出了三种不同聚合物的微塑料，即聚乙烯（PE）、聚丙烯（PP）和聚苯乙烯（PS）。发现了多种形状的微塑料，包括纤维、泡沫、碎片和薄膜，其中纤维是微塑料的主要形状。扫描电子显微镜（SEM）图像显示，附着颗粒、凹槽、凹坑、裂缝和薄片是常见的降解形态。大气沉降物中非纤维微塑料和纤维的浓度范围为175 - 313个/平方米/天。因此，大气、陆地表面和水生环境之间的沙尘排放和沉降与微塑料的传输有关。
Microplastic pollution has exhibited a global distribution, including seas, lakes, rivers, and terrestrial environment in recent years. However, little attention was paid on the atmospheric environment, though the fact that plastic debris can escape as wind-blown debris was previously reported. Thus, characteristics of microplastics in the atmospheric fallout from Dongguan city were preliminarily studied. Microplastics of three different polymers, i.e., PE, PP, and PS, were identified. Diverse shapes of microplastics including fiber, foam, fragment, and film were found, and fiber was the dominant shape of the microplastics. SEM images illustrated that adhering particles, grooves, pits, fractures, and flakes were the common patterns of degradation. The concentrations of non-fibrous microplastics and fibers ranged from 175 to 313 particles/m2/day in the atmospheric fallout. Thus, dust emission and deposition between atmosphere, land surface, and aquatic environment were associated with the transportation of microplastics.