The size of less than 5 mm micro-plastic body is tiny, is the environmental pollutants and pathogenic microorganisms carrier. Reporter learned from the Chinese Academy of Sciences, Wuhan Botanical Garden, researchers through the investigation of the Wuhan Lake Group and the Three Gorges reservoir micro-plastic pollution situation for the world to understand the micro-plastic The level of pollution in freshwater systems provides important reference data.
Plastic brings convenience to people's lives, and brings environmental pollution problems. Plastic products in the land and aquatic environment after the disintegration, the final formation of millions of small plastic particles, of which the size of less than 5 mm particles are defined Microfilm pollution and harm in the water environment have attracted the attention of the scientific community.Currently, the research on micro-plastic pollution at home and abroad is mainly concentrated in the marine environment, and the data of freshwater micro-plastic pollution is relatively scarce.
Chinese Academy of Sciences, Wuhan Botanical Garden, Wang Jun, the team surveyed the Wuhan Lake Group and the Three Gorges reservoir area of micro-plastic pollution situation.Studies show that the Wuhan Lake micro-plastic pollution in the degree of significant spatial changes in the micro-plastic abundance of water from the city center Peripheral lakes are reduced, which confirms the important impact of human factors on the distribution of micro-plastics in the city's lakes.
The results of microfilm contamination in the surface water and sediments of the Three Gorges reservoir area show that microbial contamination is more serious in urban areas, while in the sediments, the most serious pollution is in rural areas. Density micro-plastic compared to high-density micro-plastic easier to precipitate from the water to the sediment.
In addition, Raman spectroscopy qualitative analysis revealed several microbial adsorbed contaminants, such as organic solvents, pharmaceutical intermediates, etc. This study provides an important insight into the level of contamination of micro-plastics in inland freshwater systems Reference data.
The results of this study have recently been published in the International Environmental Key Laboratory "Overall Environmental Science".