期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 828, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2022.154259
关键词
Microplastics; Soil; Risk assessment; Agriculture; Land use types
资金
- National Natural Science Foundation of China [41977307]
- National Key Research and Development Program of China [2019YFC1804101]
- Shenzhen Science & Technology Project [20200830203418001]
A large number of plastic products used in agricultural production have low recycling efficiency, resulting in the production of microplastics. This study investigates the microplastic contamination in the main agricultural areas of Xinjiang and finds that the majority of microplastics are bulk-shaped and white, with sizes mostly less than 0.5 mm. The contamination risk index for microplastics in this area is 108.92, indicating a grade III risk level. The study also reveals that there is little difference in microplastic abundance between paddy fields and garden lands, possibly due to similar pollution sources.
A large number of plastic products are used in the process of agricultural production, and the recycling efficiency is low, which leads to the production of a large number of microplastics. Therefore, the microplastic contamination in agricultural areas requires being investigated urgently. In addition, the occurrence characteristics of microplastics are also different in agricultural areas with various land use modes. In this study, the main agricultural areas in Xinjiang are taken as the research object. The abundance of microplastics in the main agricultural areas in Xinjiang ranges from 288 to 1452 items/kg. The shape of microplastics is mainly bulks, and white microplastics account for the highest proportion, and the majority of their sizes are less than 0.5 mm. The risk assessment results show that the contamination risk index of microplastics in this area is 108.92 and the risk level is grade III. The research shows that there is little difference in the abundance of microplastics between paddy field and garden land, which may be because there are few sources of microplastics in the land of these two utilization modes, and the potential pollution sources are similar, such as the atmospheric deposition of microplastics, the falling of fibers on people's clothes during farming, and the agricultural use of sludge. This study can provide a reference for further study on the existing circumstances of microplastics in agricultural areas.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据