Application of reconstructed background in assessing heavy metal pollution of soils near Jilin Section of the Songhua River, China

International Conference on Energy Engineering and Environmental Protection 2016

能源学;生态环境科学

Hao, Libo^1 ; Tian, Mi^1 ; Zhao, Xinyun^1 ; Wang, Tong^1

Department of Geochemistry, College of GeoExploration Sciences and Technology, Jilin University, Changchun

130026, China^1

关键词: Agricultural soils;    Anthropogenic sources;    Enrichment factors;    Environmental science;    Heavy metal pollution;    Heavy metals in soil;    Human disturbances;    Natural sources;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/52/1/012060/pdf
DOI  :  10.1088/1742-6596/52/1/012060

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The distinguishing and evaluation of natural and anthropogenic sources of heavy metals in soils have always been the important issues in the field of environmental science. In this research, natural sources of heavy metals in soils are calculated according to the relationships between major oxides and heavy metals. The individual sample has independent backgrounds of heavy metals, which is more reasonable. If the single environmental background is used as baseline, anomalies in regions with low background might be decreased or hided and those in regions with high background will be overstated. In this study, enrichment factor is defined as the ratio of measured concentration and reconstructed background of heavy metals, which is of specific significance in practical applications with no assumptions. The agricultural soils near Jilin section of the Songhua River are polluted by Hg seriously with more than half samples polluted greatly. And the soils are polluted by Cd moderately. A few samples are polluted by Zn moderately. The other heavy metals in soils are almost in the level of background with little human disturbance.