Geochemical characteristics and environmental assessment of heavy metal elements in agricultural soil of Anqiu area, Shandong Province
ZHAO Xiu-Fang1(), ZHANG Yong-Shuai1, FENG Ai-Ping1, WANG Yi-Xuan2, XIA Li-Xian1, WANG Hong-Lei1, DU Wei1
1. The Seventh Geological and Mineral Exploration Institute, Linyi 276006,China 2. College of Horticulture, Nanjing Agricultural University, Nanjing 210095,China
In order to understand the status of soil heavy metal pollution in Anqiu Area, Shandong Province,10 194 soil samples are systematically collected,the contents of 8 heavy metal elements including Cd, Hg, Pb and As are tested and analyzed.The geochemical distribution characteristics of heavy metal elements and their possible sources are discussed by using geostatistical and multivariate statistical methods.The results show that the average contents of Cd, Hg and As in the soil of the study area are similar to the background values of Weifang soil, and the average contents of other elements are slightly higher than the soil background values of Weifang.The average contents of the 8 heavy metal elements are all lower than risk screening values of standard. According to cluster analysis,eight heavy metal elements are mainly divided into four categories.The first category is Cr, Ni, Cu and Zn, whose distributions are mainly affected by natural factors such as the parent material of the soil, while Zn is also affected by human activities.The second category is Cd,Pb and the third category is Hg. The distribution characteristics of these elements are greatly affected by human activities such as metal smelting and processing, transportation, mining, etc.The fourth category is As, which is not only inherited from the the parent material of the soil, but also affected by human activities. The soil environmental quality in the study area is evaluated by Soil Environmental Quality Risk Control Standard for Soil Contamination of Agricultural Land(GB 15618—2018),the results show that the soil environment in the study area is mainly safe zone, risk-freeand. Point source pollution only exists in some places.
赵秀芳, 张永帅, 冯爱平, 王艺璇, 夏立献, 王宏雷, 杜伟. 山东省安丘地区农业土壤重金属元素地球化学特征及环境评价[J]. 物探与化探, 2020, 44(6): 1446-1454.
ZHAO Xiu-Fang, ZHANG Yong-Shuai, FENG Ai-Ping, WANG Yi-Xuan, XIA Li-Xian, WANG Hong-Lei, DU Wei. Geochemical characteristics and environmental assessment of heavy metal elements in agricultural soil of Anqiu area, Shandong Province. Geophysical and Geochemical Exploration, 2020, 44(6): 1446-1454.
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