Investigation of the extent of contamination of heavy metals in agricultural soil using statistical analyses and contamination indices

To examine the level of contamination of Eshghabad region, Neyshabur, the concentration of heavy metals in soil was measured. For this purpose, 37 samples were taken from surface soil and the total concentration of heavy elements was measured by inductively coupled plasma (ICP). The mean concentrati...

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Bibliographic Details
Published in:Human and ecological risk assessment 2019-07, Vol.25 (5), p.1125-1136
Main Authors: Esmaeilzadeh, Marjan, Jaafari, Jalil, Mohammadi, Ali Akbar, Panahandeh, Maryam, Javid, Alahbakhsh, Javan, Safoura
Format: Article
Language:English
Subjects:
Agricultural land
cluster analyses
Contamination
contamination intensity
Copper
Earth crust
Heavy elements
Heavy metals
Indicators
Inductively coupled plasma
Iron
Lead
metal
Metal concentrations
Metals
Neyshabur
Nickel
Quality standards
Sediment pollution
soil
Soil analysis
Soil contamination
Soil pollution
Soil surfaces
Soils
Spatial distribution
Stations
Statistical analysis
Statistical methods
Statistics
Zinc
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Summary:To examine the level of contamination of Eshghabad region, Neyshabur, the concentration of heavy metals in soil was measured. For this purpose, 37 samples were taken from surface soil and the total concentration of heavy elements was measured by inductively coupled plasma (ICP). The mean concentration of Pb, Ni, Cu, Zn, and Fe was obtained to be 195, 87.3, 22.8, 274.8, and 2.5%, respectively. Using five valid indicators, the intensity of metal contamination in soil was calculated and compared. Furthermore, using statistical analyses, the relationships between the elements, their origins, and the spatial distribution of metals across various stations were investigated. The results indicated that the mean value of all of the studied metals (except for iron and copper) is greater than the mean concentration of metals in the Earth's crust. The indicators showed very high contamination for lead, while low to medium contamination for other elements of interest in the farming soils of the region. Statistical analyses indicated that there is a relatively similar contamination intensity across all of the studied stations. Considering the quality standards, the soils of this region are threatened by contamination of lead.
ISSN:1080-7039
1549-7860
DOI:10.1080/10807039.2018.1460798