Preliminary Screening for Microplastic Concentrations in the Surface Water of the Ob and Tom Rivers in Siberia, Russia
Preliminary Screening for Microplastic Concentrations in the Surface Water of the Ob and Tom Rivers in Siberia, Russia
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DOI：
10.3390/su13010080
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发表时间：
2021-01-01
期刊：
影响因子：
3.9
通讯作者：
Strezov, Vladimir
中科院分区：
文献类型：
--
作者：
Frank, Yulia A.;Vorobiev, Egor D.;Strezov, Vladimir
到目前为止，俄罗斯最大的河流排放到北冰洋仍然是世界淡水系统中微塑料分布数据地图上的“空白点”。这项研究描述了西伯利亚西部鄂毕河及其大型支流汤姆河地表水中微塑料的丰度和形态。汤姆河和鄂毕河两条河流的平均颗粒数分别为每立方米44.2至51.2个颗粒或每立方米79.4至87.5微克。在回收的微塑料中，93.5%的最大尺寸小于1毫米，是最大的一组。Ob和Tom样本中，不规则形状的微碎片数量最多，占总计数的45.5（47.4%）和超过微纤维（22.1%）、微膜（20.8%）和微球（9.74%）的平均计数。这项研究的结果为了解鄂毕河系统向北冰洋输送微塑料的规模提供了基线，并补充了目前有关全球不同地理位置淡水系统中微塑料丰度和多样性的可用数据。
To date, the largest Russian rivers discharging to the Arctic Ocean remain a "blank spot" on the world map of data on the distribution of microplastics in freshwater systems. This study characterizes the abundance and morphology of microplastics in surface water of the Ob River and its large tributary, the Tom River, in western Siberia. The average number of particles for the two rivers ranged from 44.2 to 51.2 items per m(3) or from 79.4 to 87.5 mu g per m(3) in the Tom River and in the Ob River, respectively. Of the recovered microplastics, 93.5% were less than 1 mm in their largest dimension, the largest group (45.5% of total counts) consisted of particles with sizes range 0.30-1.00 mm. Generally, microfragments of irregular shape were the most abundant among the Ob and Tom samples (47.4%) and exceeded microfibers (22.1%), microfilms (20.8%), and microspheres (9.74%) by average counts. Results from this study provide a baseline for understanding the scale of the transport of microplastics by the Ob River system into the Arctic Ocean and add to currently available data on microplastics abundance and diversity in freshwater systems of differing global geographic locations.