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Magnetic signature and source identification of heavy metal contamination in urban soils of steel industrial city, Northeast China
- Source :
- Journal of Soils and Sediments. 17:190-203
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Identifying the spatial distribution and degree of heavy metal contamination in the soils is required for urban environmental management. Magnetic measurement provides a rapid means of determining spatial distribution and degree of soil pollution and identifying various anthropogenic sources of heavy metals. The purpose of this study was to characterize the magnetic signature of heavy metal contamination and identify the sources of heavy metals in urban soils from steel industrial city. A total of 115 urban topsoils from Anshan city, Northeast China, were collected and determined for magnetic properties and heavy metal concentration. Magnetic susceptibility (χlf) and saturation isothermal remanent magnetization (SIRM) were determined as proxy for ferrimagnetic mineral concentration. Magnetic minerals were identified by using Curie temperature, X-ray diffraction (XRD), and scanning electron microscope (SEM) equipped with an energy-dispersive X-ray spectrometer (EDS). The Pearson’ correlation and matrix cluster analyses were used to establish the relationship between magnetic parameters and heavy metal concentrations. Urban topsoils exhibit characteristic magnetic enhancement. The magnetic measurement in particle size fractions indicates that 50–2 μm fraction has the highest low-field magnetic susceptibility (χlf), while
- Subjects :
- Pollution
Topsoil
Stratigraphy
media_common.quotation_subject
Mineralogy
010501 environmental sciences
010502 geochemistry & geophysics
01 natural sciences
Magnetic susceptibility
Soil contamination
Mining engineering
Remanence
Curie temperature
Environmental science
Magnetic nanoparticles
Saturation (magnetic)
0105 earth and related environmental sciences
Earth-Surface Processes
media_common
Subjects
Details
- ISSN :
- 16147480 and 14390108
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Journal of Soils and Sediments
- Accession number :
- edsair.doi...........f2d5b191305a1c2e0263afe5e453e93c