JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2023, Vol. 58 ›› Issue (3): 121-126.doi: 10.6040/j.issn.1671-9352.0.2022.636

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Characteristics and sources analysis of microplastics in precipitation of Mount Tai

XU Xin-miao1, ZHEN Jie-bo1, JIANG Yu-qian1, DU Ping1, YUAN Xian-zheng1, WU Di2, YIN Xiang-kun2, WANG Yan1*   

  1. 1. School of Environmental Science and Engineering, Shandong University, Qingdao 266237, Shandong, China;
    2. Shandong Taishan Meteorological Station, Taian 271000, Shandong, China
  • Published:2023-03-02

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Abstract: In order to explore the distribution characteristics of microplastics in high altitude wet deposition, this study collected precipitation samples in the summer of 2021 in Mt. Tai. The morphology and composition characteristics of the microplastics were observed by stereo microscope, Fourier infrared spectroscopy and Raman spectroscopy. The transmission and source were analyzed by using backward flow trajectory analysis and concentration weight trajectory model. It was found that the abundance ranged from 0 to 858 L-1, in which the number of fragments, fibers and films accounted for 53%, 31% and 16% respectively, and most particles were smaller than 250 μm. The polymer components were mainly polyethylene(PE), polystyrene(PS), polypropylene(PP), polyethylene terephthalate(PET)and polyamide(PA). The analysis of air mass trajectory showed that the distribution characteristics of microplastics in Mt. Tai were mainly affected by the airflow in Shandong and southwest, and the potential source areas were mainly in Shandong, Jiangsu and Henan province.

Key words: microplastics, wet deposition, potential source, Mount Tai

CLC Number: 

  • X513
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