ORIGINAL RESEARCH
Magnetic Response of Heavy Metal Pollution
in Soil of Urban Street Greenbelts
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1
College of Geography and Environment, Baoji University of Arts and Sciences, Baoji 721013, China
2
Shaanxi Key Laboratory of Disasters Monitoring and Mechanism Simulation,
Baoji University of Arts and Sciences, Baoji 721013, China
Submission date: 2021-04-27
Final revision date: 2021-08-02
Acceptance date: 2021-08-17
Online publication date: 2022-01-21
Publication date: 2022-03-22
Corresponding author
Junhui Zhang
College of Geography and Environment, Baoji University of Arts and Sciences
Shaanxi Key Laboratory of Disasters Monitoring and Mechanism Simulation, Baoji University of Arts and Sciences, China
Pol. J. Environ. Stud. 2022;31(2):1923-1933
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ABSTRACT
The magnetic characteristics and heavy metal elements of surface soil samples in Baoji urban
street greenbelts were systematically analyzed in order to explore the feasibility of using
magnetic parameters to indicate heavy metal pollution in urban street greenbelts soil. The results
of the study showed that ferromagnetic minerals with low-coercivity and coarse magnetic grains
dominated magnetic properties of the samples. The average values of low-frequency magnetic
susceptibility (χlf) was 200.65×10-8 m3/kg, which was much higher than the background value.
The spatial variation of magnetic mineral content was remarkable, with high levels observed
in heavy traffic areas and industrial gathering areas, and low content in areas heavily covered by
short vegetation, which was basically consistent delineated by pollution load index (PLI). Magnetic
parameters χlf, saturated isothermal remanent magnetization (SIRM) and soft remanent magnetization
(SOFT) can be used as the effective indicators for monitoring heavy metals pollution in soil of urban
street greenbelts.