The research results of the two master's degree in soil micro -plastic have attracted attention

Recently, the well -known academic journal "ENVIRONMENTAL Science & Technology Letters" (IF = 7.654, SCI area TOP) and "SCIENCE of the Total Environment" (IF = 7.963, SCI TOP TOP) published the School of Geosciences. The research team on the latest research results of the research field in the field of micro -plastic release of film -covered farmland. The 2019 Master's Graduate Graduate Tian Xia and the 2020 Master Graduate Yang Mei Niu are the first author. Professor Chang Chunping and Professor Guo Zhonglian of the research team are communications authors. Hebei Normal University is the first completion unit. The cooperation unit includes Beijing Normal University and Institute of Geography Science, Hebei Provincial Academy of Sciences.

▲ Yang Mei Niu

▲ Tian Xia

The research team found that the long -term soil wind erosion observation of the semi -drought area in the northwest of our country found that the surface soil surface of farmland with abundant membrane residues was very high, and the ground membrane residues, plastic waste and agricultural fertilizers were surface soil micro plastic. The main source. Soil drying cluster is a "sieving device" of micro -plastic species and size. Large -sized non -fiber micro plastic is often more likely to be tied with soil dry agglomerate. As a "booster", the sand and dust raised by the wind erosion process can enrich a large amount of micro -plastic, and the wind speed and soil properties are obviously quantitatively quantitatively quantitative with micro -plastic enrichment conditions in sand and dust. The above discovery provides a useful research idea for the wind erosion sand and dust micro plastic release mechanism.

The plastic remaining in the environment gradually forms smaller plastic fragments or particles through biodegradation, light degradation, mechanical wear, etc. When plastic size is less than 5 mm, it is called micro plastic. The micro -plastic in the atmosphere has the characteristics of small size, light quality, difficulty in degradation, and easy adsorption. It is easy to directly enter and stay in human tissue through breathing, feeding, etc., and eventually pose a potential threat to human health. In the past, the main source of the residents' atmosphere of atmospheric micro -plastic may be people's production and living behaviors (such as residential discharge and road dust). It was not until 2019 that the study of the drought semi -arid areas contaminated by plastic garbage may be an important source of atmospheric micro -plastic. The low recovery rate of the ground membrane causes soil containing a large amount of plastic residues that include micro -plastic and secondary phthalate. To the area to the area, the micro -plastic pollution that causes soil and soil and atmosphere.

▲ The picture shows the micro -plastic of various forms in the wind erosion sand (A, B, C are fibrous micro plastic, D, E, and F are thin -film micro plastic, G, H, I are fragmented micro plastic)

The above studies have recently attracted media attention. China News Network and China Science Journal (Science Network) have reported and reproduced one after another.

Draft/Academy of Geographical Sciences Science and Technology Division

Capture/Wang Mengfan

Review/Wang Ping Qin Wenjin

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