摘要
为了探究高山湿沉降中微塑料颗粒的分布特征,于2021年夏季在泰山采集降水样品,通过体视显微镜,结合傅立叶红外光谱和拉曼光谱,观察微塑料颗粒的形貌和组分特征,并运用后向气流轨迹分析和浓度权重轨迹模型分析传输和来源。结果表明,泰山采集降水样品中微塑料颗粒的丰度范围为0~858 L^(-1),其中碎片、纤维和薄膜的数量分别占53%、31%和16%,大多数粒径小于250μm,聚合物成分主要为聚乙烯(PE)、聚苯乙烯(PS)、聚丙烯(PP)、聚对苯二甲酸乙二醇酯(PET)、聚酰胺(PA)。泰山降水样品中微塑料颗粒主要受山东境内和西南方向的气流影响,潜在源区主要在山东、江苏、河南省境内。
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.
作者
徐鑫淼
甄洁博
姜雨倩
杜萍
袁宪正
吴迪
尹祥坤
王艳
XU Xin-miao;ZHEN Jie-bo;JIANG Yu-qian;DU Ping;YUAN Xian-zheng;WU Di;YIN Xiang-kun;WANG Yan(School of Environmental Science and Engineering,Shandong University,Qingdao 266237,Shandong,China;Shandong Taishan Meteorological Station,Tai̓an 271000,Shandong,China)
出处
《山东大学学报（理学版）》
CAS
CSCD
北大核心
2023年第3期121-126,共6页
Journal of Shandong University(Natural Science)
基金
国家自然科学基金资助项目(22176112)
山东省自然科学基金资助项目(42107116)。
关键词
微塑料
湿沉降
潜在源
泰山
microplastics
wet deposition
potential source
Mount Tai
