Experimental Study on the Migration and Distribution of Microplastics in Desert Farmland Soil Under Drip Irrigation

被引：1
|
作者：
Du, Ao [1 ,2 ]
Hu, Can [1 ,2 ]
Wang, Xufeng [1 ,2 ]
Zhao, Yachuan [1 ,2 ]
Xia, Wenhao [1 ,2 ]
Dai, Xianxing [3 ]
Wang, Long [1 ,2 ]
Zhang, Shufeng [1 ,2 ]
机构：
[1] Tarim Univ, Coll Mech & Elect Engn, Alaer, Peoples R China
[2] Dept Educ Xinjiang Uygur Autonomous Reg, Key Lab Coll & Univ, Alaer, Peoples R China
[3] Tarim Univ, Coll Agr, Alar, Peoples R China
来源：
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY | 2024年 / 43卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Desert farmland; Drip irrigation; Migration; Plastic film residue; Soil layer; Soil microplastics; Soil texture;
D O I：
10.1002/etc.5853
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The microplastics (MPs) formed by broken plastic film may migrate in the soil under drip irrigation. To investigate the migration distribution of MPs in desert farmland soil under drip irrigation conditions, our study was conducted on farmland in Xinjiang (China). A MP drip irrigation penetration migration testing device was set up in combination with Xinjiang farmland irrigation methods to conduct a migration simulation experiment. The results showed that the migration amount of MPs in soil was significantly positively correlated with the amount of drip irrigation, and significantly negatively correlated with the soil depth; in addition, the relationship between the migration amount of MPs in different types of soil was: clay < sandy loam < sandy soil. Under drip irrigation conditions, the migration rates of MPs were 30.51%, 19.41%, and 10.29% in sandy soil, sandy loam soil, and clay, respectively. The migration ability of these three particle sizes of polyethylene MPs in soil was ranked as follows: 25 to 147 mu m > 0 to 25 mu m > 147 to 250 mu m. When the drip irrigation volume was 2.6 to 3.2 L, horizontal migration distances of MPs exceeded 5 cm, and vertical migration distances reached more than 30 cm. Our findings provide reference data for the study of soil MP migration. Environ Toxicol Chem 2024;00:1-10. (c) 2024 SETAC
引用
收藏
页码：1250 / 1259
页数：10
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