5.中国雄安集团生态建设投资有限公司,雄安 071700
1.College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
2.School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin 300130, China
3.Xiong′an Institute of Eco-Environment, Hebei University, Baoding 071002, China
4.Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
5.Ecological Construction Investment Co. Ltd., China Xiong′an Group, Xiong′an 071700, China
为研究白洋淀-府河入淀口沉积物中微塑料的污染现状,在府河入淀口段15个采样点进行采样,利用密度浮选法分离沉积物样品中的微塑料,分析微塑料的丰度、分布特征及来源。结果表明:府河沉积物中微塑料的平均丰度为(558.4±233.3) 个·kg
;依据微塑料的形态特征可将府河入淀口段沉积物中的微塑料划分为碎片状、纤维状、薄膜状和球状;丰度最高的微塑料为碎片状,占总数的66.1%;粒径为0.1~0.5 mm的微塑料占比最大(44.7%),其次是0.5~1 mm的微塑料(30.0%);微塑料的类型主要是聚乙烯和聚丙烯,占比分别为44.2%和32.6%。综上所述,府河入淀口段沉积物中微塑料的丰度和分布特征与该区域的人口密度和人类活动强度等环境特点密切相关。
In order to study the status of microplastic pollution in sediments of Fuhe River estuary into the Baiyangdian Lake, sediments of 15 sampling sites were collected to separate the microplastic by flotation method, and the microplastic abundance, distribution characteristics and origins were investigated. The results showed that the average abundance of microplastic in Fuhe River sediment was (558.4±233.3) items·kg
. The microplastic was divided into fragment, fiber, film and pellet according to morphological characteristics of microplastic. The commonest microplastic shape was fragment, which accounted for 66.1%. The proportion of 0.1~0.5 mm microplastic was the largest (44.7%), followed by that of 0.5~1 mm microplastic (30.0%). The main types of microplastic were polyethylene and polypropylene, accounting for 44.2% and 32.6%, respectively. The analysis indicated that the abundance and distribution characteristics of microplastic in sediments of Fuhe River estuary into the Baiyangdian Lake were closely related to the environmental characteristics, such as population density and human activity intensity in the study area.
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Sampling sites along Fuhe River estuary into the Baiyangdian Lake
Microplastic abundance in sediments of different sampling sites
Shapes of microplastic
Abundance of microplastic with different shapes in sediments of different sampling sites
Abundance of microplastic with different sizes in sediments of different sampling sites
FT-IR spectrum of different types of microplastic
Percentage of different types of microplastic
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