The Influence of Electrode Polarisation on Dielectric Spectra, with Special Reference to Capacitive Biomass Measurements. II. Reduction in the Contribution of Electrode Polarisation to Dielectric Spectra Using a Two-Frequency Method

Christopher Lyndon Davey; Douglas B. Kell

doi:10.1016/S0302-4598(98)00132-9

The Influence of Electrode Polarisation on Dielectric Spectra, with Special Reference to Capacitive Biomass Measurements. II. Reduction in the Contribution of Electrode Polarisation to Dielectric Spectra Using a Two-Frequency Method

Overview

Standard

The Influence of Electrode Polarisation on Dielectric Spectra, with Special Reference to Capacitive Biomass Measurements. II. Reduction in the Contribution of Electrode Polarisation to Dielectric Spectra Using a Two-Frequency Method. / Davey, Christopher Lyndon; Kell, Douglas B.

In: Bioelectrochemistry and Bioenergetics, Vol. 46, No. 1, 08.1998, p. 105-114.

Research output: Contribution to journal › Article › peer-review

Bibtex - Download

@article{b94be621af674a2d8219f4dc403c6f17,

title = "The Influence of Electrode Polarisation on Dielectric Spectra, with Special Reference to Capacitive Biomass Measurements. II. Reduction in the Contribution of Electrode Polarisation to Dielectric Spectra Using a Two-Frequency Method",

abstract = "Electrode polarisation can interfere significantly with the measurement of the dielectric properties of biological systems, and in particular with the dielectric estimation of microbial biomass. We showed in the previous paper of this pair [C.L. Davey, D.B. Kell, The influence of electrode polarisation on dielectric spectra, with special reference to capacitive biomass measurements: I. Quantifying the effects on electrode polarisation of factors likely to occur during fermentations, Bioelectrochem. Bioenerg., 1998] that electrode polarisation can be modelled by a power law and that the parameters of this model can be simply modified to give reliable and intuitive measures of the magnitude View the MathML source and rate of fall of polarisation with increasing frequency View the MathML source. Importantly and surprisingly, although the magnitude of electrode polarisation can change it was found that the View the MathML source value remained constant. A highly useful consequence of this constancy of View the MathML source for a given instrument is that one can exploit it directly to eliminate electrode polarisation from biological capacitance (or permittivity) spectra using the simple two-frequency method developed in this paper.",

keywords = "dielectric spectroscopy, electrode polarisation, biomass estimation",

author = "Davey, {Christopher Lyndon} and Kell, {Douglas B.}",

year = "1998",

month = aug,

doi = "10.1016/S0302-4598(98)00132-9",

language = "English",

volume = "46",

pages = "105--114",

journal = "Bioelectrochemistry and Bioenergetics",

issn = "0302-4598",

publisher = "Elsevier",

number = "1",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The Influence of Electrode Polarisation on Dielectric Spectra, with Special Reference to Capacitive Biomass Measurements. II. Reduction in the Contribution of Electrode Polarisation to Dielectric Spectra Using a Two-Frequency Method

AU - Davey, Christopher Lyndon

AU - Kell, Douglas B.

PY - 1998/8

Y1 - 1998/8

N2 - Electrode polarisation can interfere significantly with the measurement of the dielectric properties of biological systems, and in particular with the dielectric estimation of microbial biomass. We showed in the previous paper of this pair [C.L. Davey, D.B. Kell, The influence of electrode polarisation on dielectric spectra, with special reference to capacitive biomass measurements: I. Quantifying the effects on electrode polarisation of factors likely to occur during fermentations, Bioelectrochem. Bioenerg., 1998] that electrode polarisation can be modelled by a power law and that the parameters of this model can be simply modified to give reliable and intuitive measures of the magnitude View the MathML source and rate of fall of polarisation with increasing frequency View the MathML source. Importantly and surprisingly, although the magnitude of electrode polarisation can change it was found that the View the MathML source value remained constant. A highly useful consequence of this constancy of View the MathML source for a given instrument is that one can exploit it directly to eliminate electrode polarisation from biological capacitance (or permittivity) spectra using the simple two-frequency method developed in this paper.

AB - Electrode polarisation can interfere significantly with the measurement of the dielectric properties of biological systems, and in particular with the dielectric estimation of microbial biomass. We showed in the previous paper of this pair [C.L. Davey, D.B. Kell, The influence of electrode polarisation on dielectric spectra, with special reference to capacitive biomass measurements: I. Quantifying the effects on electrode polarisation of factors likely to occur during fermentations, Bioelectrochem. Bioenerg., 1998] that electrode polarisation can be modelled by a power law and that the parameters of this model can be simply modified to give reliable and intuitive measures of the magnitude View the MathML source and rate of fall of polarisation with increasing frequency View the MathML source. Importantly and surprisingly, although the magnitude of electrode polarisation can change it was found that the View the MathML source value remained constant. A highly useful consequence of this constancy of View the MathML source for a given instrument is that one can exploit it directly to eliminate electrode polarisation from biological capacitance (or permittivity) spectra using the simple two-frequency method developed in this paper.

KW - dielectric spectroscopy

KW - electrode polarisation

KW - biomass estimation

UR - http://hdl.handle.net/2160/35278

U2 - 10.1016/S0302-4598(98)00132-9

DO - 10.1016/S0302-4598(98)00132-9

M3 - Article

VL - 46

SP - 105

EP - 114

JO - Bioelectrochemistry and Bioenergetics

JF - Bioelectrochemistry and Bioenergetics