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Complex resistivity spectrum of pollutant soils with low-concentration heavy metals
Soil contamination by heavy metals occurs globally, with varying degrees of severity, especially in agricultural fields. Investigating the frequency response characteristics of different types of heavy metal pollutants through induced polarization can provide valuable evidence for surveys based on t...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10550503/ https://www.ncbi.nlm.nih.gov/pubmed/37800064 http://dx.doi.org/10.1016/j.heliyon.2023.e20541 |
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author | Xie, Xuesong Li, Diquan Yan, Jiabin Pei, Jing Wu, Weitian Liu, Zhongyuan Ding, Xiaolin |
author_facet | Xie, Xuesong Li, Diquan Yan, Jiabin Pei, Jing Wu, Weitian Liu, Zhongyuan Ding, Xiaolin |
author_sort | Xie, Xuesong |
collection | PubMed |
description | Soil contamination by heavy metals occurs globally, with varying degrees of severity, especially in agricultural fields. Investigating the frequency response characteristics of different types of heavy metal pollutants through induced polarization can provide valuable evidence for surveys based on this method. Soil specimens with varying low concentrations of copper (Cu), chromium (Cr), cadmium (Cd), and lead (Pb) heavy metals were prepared for this study, and parameters including complex resistivity, amplitude-frequency, and resistivity phase were measured. Our findings reveal the following trends: Complex resistivity decreases as heavy metal concentrations increase, demonstrating significant shifts within lower concentration ranges but presenting limitations for assessing pollution in high-concentration areas. Conversely, amplitude-frequency increases with higher heavy metal concentrations, displaying excellent performance in high-concentration scenarios. The differences in complex resistivity and amplitude-frequency among different types of heavy metal pollutants are distinct. In contrast, the absolute phase decreases with rising heavy metal concentrations. The resistivity phase spectra for various heavy metal pollutants exhibit unique patterns. For example, copper-contaminated soil exhibits phase peaks in the frequency range of 8–32 Hz, whereas chromium-contaminated soil shows phase peaks at 16–64 Hz. Cadmium-contaminated soil displays phase peaks ranging from 0.25 Hz to 2 Hz, while lead-contaminated soil exhibits phase peaks within the 0.5 Hz–4 Hz range. Leveraging the frequency range corresponding to phase peaks as an identification method for heavy metal pollution types proves effective. The frequency response characteristics of induced polarization vary significantly among different types and concentrations of heavy metal pollutants, providing important foundations for the application of induced polarization method in the field of heavy metal pollution detection. |
format | Online Article Text |
id | pubmed-10550503 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-105505032023-10-05 Complex resistivity spectrum of pollutant soils with low-concentration heavy metals Xie, Xuesong Li, Diquan Yan, Jiabin Pei, Jing Wu, Weitian Liu, Zhongyuan Ding, Xiaolin Heliyon Research Article Soil contamination by heavy metals occurs globally, with varying degrees of severity, especially in agricultural fields. Investigating the frequency response characteristics of different types of heavy metal pollutants through induced polarization can provide valuable evidence for surveys based on this method. Soil specimens with varying low concentrations of copper (Cu), chromium (Cr), cadmium (Cd), and lead (Pb) heavy metals were prepared for this study, and parameters including complex resistivity, amplitude-frequency, and resistivity phase were measured. Our findings reveal the following trends: Complex resistivity decreases as heavy metal concentrations increase, demonstrating significant shifts within lower concentration ranges but presenting limitations for assessing pollution in high-concentration areas. Conversely, amplitude-frequency increases with higher heavy metal concentrations, displaying excellent performance in high-concentration scenarios. The differences in complex resistivity and amplitude-frequency among different types of heavy metal pollutants are distinct. In contrast, the absolute phase decreases with rising heavy metal concentrations. The resistivity phase spectra for various heavy metal pollutants exhibit unique patterns. For example, copper-contaminated soil exhibits phase peaks in the frequency range of 8–32 Hz, whereas chromium-contaminated soil shows phase peaks at 16–64 Hz. Cadmium-contaminated soil displays phase peaks ranging from 0.25 Hz to 2 Hz, while lead-contaminated soil exhibits phase peaks within the 0.5 Hz–4 Hz range. Leveraging the frequency range corresponding to phase peaks as an identification method for heavy metal pollution types proves effective. The frequency response characteristics of induced polarization vary significantly among different types and concentrations of heavy metal pollutants, providing important foundations for the application of induced polarization method in the field of heavy metal pollution detection. Elsevier 2023-09-29 /pmc/articles/PMC10550503/ /pubmed/37800064 http://dx.doi.org/10.1016/j.heliyon.2023.e20541 Text en © 2023 Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Xie, Xuesong Li, Diquan Yan, Jiabin Pei, Jing Wu, Weitian Liu, Zhongyuan Ding, Xiaolin Complex resistivity spectrum of pollutant soils with low-concentration heavy metals |
title | Complex resistivity spectrum of pollutant soils with low-concentration heavy metals |
title_full | Complex resistivity spectrum of pollutant soils with low-concentration heavy metals |
title_fullStr | Complex resistivity spectrum of pollutant soils with low-concentration heavy metals |
title_full_unstemmed | Complex resistivity spectrum of pollutant soils with low-concentration heavy metals |
title_short | Complex resistivity spectrum of pollutant soils with low-concentration heavy metals |
title_sort | complex resistivity spectrum of pollutant soils with low-concentration heavy metals |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10550503/ https://www.ncbi.nlm.nih.gov/pubmed/37800064 http://dx.doi.org/10.1016/j.heliyon.2023.e20541 |
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