The pollution characteristics of microplastics in Daliao River sediments
HAN Li-hua1,2,3, LI Qiao-ling1, XULi1,2,3, LU An-xiang2,3, GONG Wen-wen2,3, YUQing1,2,3
1. School of Science, North University of China, Taiyuan 030051, China;
2. Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;
3. Beijing Municipal Key Laboratory of Agricultural Environment Monitoring, Beijing 100097, China
Eight sediment samples were collected in Daliao River. The composition and distribution characteristics of microplastics in this study were studied by density flotation method combined with stereo microscope and μ-FTIR. The results showed that the average abundance of microplastics in sediments was (66.67±79.93) items/kg. DL5, located in AnShan Hai Cheng city, had the highest abundance of (193.33±172.43) items/kg; DL6, located in Liuhao, town of Liaoyang country had the lowest abundance of (20±34.64) items/kg. The main colors of microplastics were white, black and yellow (83.75%). The main shapes of microplastics were fiber, film and debris (91.25%). The main particle size of microplastics were 1000~2000μm (33.75%). It can be concluded that the main components of film microplastics were polyamide (PA), polypropylene (PP) and polyethylene (PE), the main component of the debris microplastics were polyethylene (PE) and polypropylene (PP),the main components of foams and particles was polystyrene (PS), and the main components of fibers were Rayon(RY) and Polyethylene terephthalate (PET). On the whole, the abundance of microplastics in sediments of Daliao River is at a moderately low level. The results can provide basic and scientific data for the study on the pollution distribution of microplastics in sediments of freshwater rivers in China.
韩丽花, 李巧玲, 徐笠, 陆安祥, 巩文雯, 蔚青. 大辽河沉积物中微塑料的污染特征[J]. 中国环境科学, 2020, 40(4): 1649-1658.
HAN Li-hua, LI Qiao-ling, XULi, LU An-xiang, GONG Wen-wen, YUQing. The pollution characteristics of microplastics in Daliao River sediments. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(4): 1649-1658.
Barnes D K. Remote islands reveal rapid rise of southern hemisphere, sea debris[J]. New York the Scientific World Journal, 2005,5:915-921.
[50]
Wang W, Ndungu A W, Li Z, et al. Microplastics pollution in inland freshwaters of China:A case study in urban surface waters of Wuhan, China[J]. Science of the Total Environment, 2017a,575:1369-1374.
[51]
Su L, Xue Y, Li L, et al. Microplastics in Taihu Lake, China[J]. Environmental Pollution, 2016,216:711-719.
[52]
Stolte Andrea, Forster Stefan, Gerdts Gunnar, et al. Microplastic concentrations in beach sediments along the German Baltic coast[J]. Marine Pollution Bulletin.2015,99(1/2):216-229.
[53]
Rech S, Macaya-Caquilpán V, Pantoja J F, et al. Rivers as a source of marine litter-A study from the SE Pacific[J]. Marine Pollution Bulletin, 2014,82(1/2):66-75.
[54]
Carson H S, Lamson M R, Nakashima D, et al. Tracking the sources and sinks of local marine debris in Hawai'I[J]. Marine Environmental Research, 2013,84:76-83.