Content characteristics and genesis of soil selenium in important cultivated areas of Leibo County, Sichuan Province
SHI Zhang-Liang1,2, JIN Li-Xin1,2, LIAO Chao1,2, BAO Yu-Han1,2, LIU Xiao-Bo1,2, DENG Huan1,2, XU Ke-Quan1,2
1.Sichuan Geological Survey, Sichuan Bureau of Geology & Mineral Resources, Chengdu 610081, China 2.Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Sichuan Geological Survey, Chengdu 610081, China
Selenium is a trace element that has an important impact on human health and hence has received increasing attention in recent years. There are many factors affecting the level of selenium in the soil, and the differences in different regions are obvious. In this paper, the content, distribution and main influencing factors of selenium in the soil of this area were studied in Gumi Town, Leibo County. The results show that the selenium content in the soil of the study area is not high, mainly concentrated around 0.226×10-6. Selenium content in soil is positively correlated with organic matter, thiophilic heavy elements cadmium, mercury, lead, arsenic and zinc, but is not simply linearly correlated with pH value. In soils with different acidities and alkalinities as well as different land use patterns and parent materials, the two are significantly different. The selenium content in the soil in the survey area is mainly controlled by the parent material of the soil. The Silurian and Ordovician black shale and carbonate area in the old strata are more likely to be enriched with selenium, while the selenium content in the Triassic sandstone area in the newer strata is lower.
时章亮, 金立新, 廖超, 包雨函, 刘晓波, 邓欢, 徐克全. 四川雷波县重点耕地区土壤硒含量特征及其成因分析[J]. 物探与化探, 2020, 44(5): 1253-1260.
SHI Zhang-Liang, JIN Li-Xin, LIAO Chao, BAO Yu-Han, LIU Xiao-Bo, DENG Huan, XU Ke-Quan. Content characteristics and genesis of soil selenium in important cultivated areas of Leibo County, Sichuan Province. Geophysical and Geochemical Exploration, 2020, 44(5): 1253-1260.