In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy

In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy

The electrical conductivity (EC) of soil is generally measured after soil extraction, so this method cannot represent the in situ EC of soil (e.g., EC of soils with different moisture contents) and therefore lacks comparability in some cases. Using a resistance measurement apparatus converted from a...

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Main Authors: Li, Xiaojing, Wang, Xin, Zhao, Qian, Zhang, Yueyong, Zhou, Qixing
Format: Online
Language:English
Published: MDPI 2016
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4883316/
id pubmed-4883316
recordtype oai_dc
spelling pubmed-48833162016-05-27 In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy Li, Xiaojing Wang, Xin Zhao, Qian Zhang, Yueyong Zhou, Qixing Article The electrical conductivity (EC) of soil is generally measured after soil extraction, so this method cannot represent the in situ EC of soil (e.g., EC of soils with different moisture contents) and therefore lacks comparability in some cases. Using a resistance measurement apparatus converted from a configuration of soil microbial fuel cell, the in situ soil EC was evaluated according to the Ohmic resistance (Rs) measured using electrochemical impedance spectroscopy. The EC of soils with moisture content from 9.1% to 37.5% was calculated according to Rs. A significant positive correlation (R2 = 0.896, p < 0.01) between the soil EC and the moisture content was observed, which demonstrated the feasibility of the approach. This new method can not only represent the actual soil EC, but also does not need any pretreatment. Thus it may be used widely in the measurement of the EC for soils and sediments. MDPI 2016-04-30 /pmc/articles/PMC4883316/ /pubmed/27144567 http://dx.doi.org/10.3390/s16050625 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Li, Xiaojing
Wang, Xin
Zhao, Qian
Zhang, Yueyong
Zhou, Qixing
spellingShingle Li, Xiaojing
Wang, Xin
Zhao, Qian
Zhang, Yueyong
Zhou, Qixing
In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy
author_facet Li, Xiaojing
Wang, Xin
Zhao, Qian
Zhang, Yueyong
Zhou, Qixing
author_sort Li, Xiaojing
title In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy
title_short In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy
title_full In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy
title_fullStr In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy
title_full_unstemmed In Situ Representation of Soil/Sediment Conductivity Using Electrochemical Impedance Spectroscopy
title_sort in situ representation of soil/sediment conductivity using electrochemical impedance spectroscopy
description The electrical conductivity (EC) of soil is generally measured after soil extraction, so this method cannot represent the in situ EC of soil (e.g., EC of soils with different moisture contents) and therefore lacks comparability in some cases. Using a resistance measurement apparatus converted from a configuration of soil microbial fuel cell, the in situ soil EC was evaluated according to the Ohmic resistance (Rs) measured using electrochemical impedance spectroscopy. The EC of soils with moisture content from 9.1% to 37.5% was calculated according to Rs. A significant positive correlation (R2 = 0.896, p < 0.01) between the soil EC and the moisture content was observed, which demonstrated the feasibility of the approach. This new method can not only represent the actual soil EC, but also does not need any pretreatment. Thus it may be used widely in the measurement of the EC for soils and sediments.
publisher MDPI
publishDate 2016
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4883316/
_version_ 1613585416399618048

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