Lost but can't be neglected: Huge quantities of small microplastics hide in the South China Sea
Lost but can't be neglected: Huge quantities of small microplastics hide in the South China Sea
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迷失但不可忽视：大量小型微塑料隐藏在南海
DOI：
10.1016/j.scitotenv.2018.03.197
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发表时间：
2018-08-15
影响因子：
9.8
通讯作者：
Cen, Zhengnan
中科院分区：
文献类型：
--
作者：
Cai, Minggang;He, Haixia;Cen, Zhengnan
在中国南海发现了大量小粒径的微塑料。根据邦戈网和泵送采样方法，海水中微塑料的丰度分别为0.045 +/- 0.093和2569 +/- 1770颗粒/m3。较小尺寸的碎片（尺寸< 0.3 mm）占总负载中微塑料数量的92%。大陆坡是最大的微塑料储存库，库存量为295吨。利用显微傅里叶变换红外光谱（FTIR）分析了样品中的21种聚合物类型，其中醇酸树脂（22.5%）和聚己内酯（PCL）（20.9%）几乎占总聚合物含量的一半。较轻的塑料不仅会集中在沿海地区，而且更有可能随着洋流漂到更远的公海。其分布特征主要受珠江陆源输入的控制。这项研究是SCS关于水中微塑料分布和影响因素的第一份报告，为进一步研究这种新兴污染物从沿海地区到公海的迁移命运和行为提供了动力。(C)2018爱思唯尔B. V.保留所有权利。
Large quantities of microplastics with small particle sizes were found in the South China Sea (SCS). The abundances of microplastics in seawater were 0.045 +/- 0.093 and 2569 +/- 1770 particles/m(3) according to the bongo net and pumping sampling methods, respectively. Smaller-size fractions (size < 0.3 mm) contributed 92% of the number of microplastics to the total load. Continental slope is the largest reservoir of microplastics with an inventory of 295 tons. 21 polymer types were found in the samples using the micro Fourier Transform Infrared Spectroscopy (FTIR), among which alkyds (22.5%) and polycaprolactone (PCL) (20.9%) accounted for almost half of the total polymer content. Lighter plastics would not only concentrate upon the coastal area, being more likely to drift further into open seas with ocean currents. The distribution characteristics showed that it was mainly controlled by terrestrial input of the Pearl River. This study, as the first report from SCS on microplastics in water for its distribution and influence factors, provided impetus for further research on the transportation fate and the behavior of this emerging pollutant from coastal zone to the open oceans. (C) 2018 Elsevier B.V. All rights reserved.