id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-18574	Li, Yingmei; Shang, Xiaoyan; Chen, Yu	Study on The Transport and Transformation of Heavy Metal Lead from Agricultural Land in An Abandoned Mining Area in Southwestern Yunnan	2024	4	.pdf	application/pdf	3744	131	56	Content of the heavy metal lead in soil samples, the According to the detection, the average content of lead in topsoil soil at each point is 55.1, 194.1, 132.9, 151.5, 52.6 mg/kg, the average content of lead in middle soil soil is 51.8, 185.0, 82.6, 80.0, 51.9 mg/kg, and the average content of lead in deep soil soil is 50.8, 166.2, 80.5, 77.0, 50.8 mg/kg. 3.3. At present, with the continuous development of China's economy, the development of mineral resources, metal smelting, sewage irrigation and the irrational application of chemical fertilizers and pesticides have led to the continuous enrichment of heavy metals in agricultural soils[3]Heavy metal pollution is also becoming more and more obvious, and heavy metal enrichment in the soil causes soil pollution, and the problem of soil heavy metal pollution has become a topic of key concern for all mankind[4]。 In the study of heavy metal pollution in mines, the key heavy metal elements are: Cu, Pb, Zn, Co, Au, Ag, Cd, As, etc.	cache/ajst-18574.pdf	txt/ajst-18574.txt