[Distribution Characteristics of Heavy Metals in Farmland Soils Around Mining Areas and Pollution Assessment].

• DOI: 10.13227/j.hjkx.202106218
• Publication Date: 2022-04-08
• Authors: Haiyang Wang; Ling Han; Danni Xie; Huijuan Hu; Zhiheng Liu; Zhen Wang
• Keywords: Soil test

In order to explore the spatial distribution and ecological risk of heavy metals in farmland soil around Tongguan Mining area, surface samples from area were collected September 2020, contents characteristics eight (Pb, Cu, Cd, Hg, Cr, Ni, Zn, As) analyzed. The Nemerow comprehensive pollution index potential used evaluate pollution. results showed that types metal elements this exceeded standard, exceeding rates 97.91%, 84.79%, 100%, 95.41%, 96.87%, 98.54%, 91.45%, 28.95%, respectively. variation coefficients ranked as Hg>Pb>Cu>Cd>Zn>As>Ni>Cr. Pb, Zn all greater than 1. Correlation analysis these five obviously correlated. terms distribution, As distributed patches, whereas Cr Ni flakes. high values mainly southern central part study area. severe rate reached 87.91%, moderate mild 9.58% 2.5%, respectively; thus, overall was severe. Cu main elements. total proportion with strong 97.08%, extremely strongly, very strongly polluted 55.63%, 27.08%, 14.37%, respectively, indicating strong. Combining two assessment methods, it can be seen mining primarily by serious. These provide data support for regional control, remediation, protection. It is suggested state its transformation various media should monitored continuously future.