Electrochemical growth curves of bio-indicators for sick building syndrome diagnostics

G. O'Brien, Kofi E. Aidoo, M. J. Hepher, M. El-Sharif, Nicholas Hytiris

Research output: Contribution to journalArticle

Abstract

Studies on electrochemical growth curve bio-indicators leading to the electrochemical growth curves approach for sick building syndrome (SBS) diagnostics are dis cussed. The ideas incorporated within electrochemical growth curve studies, i.e. the conductance, capacitance and impedance of plated out and slope nutrient gels, vary according to the micro-organism type and number of cells (spores) present. Thus, this observation may be applied to the design and study of real-time diagnostics for SBS. Using formaldehyde at selected concentrations within the OEL, COSHH regulation concentration levels, the conductivity, capacitance and impedance growth curves for Aspergillus parasiticus were examined using a Bactometer. Reproducibility ofthese curves and trigger levels of pollutant causing significant deviation from nor mal growth conductivity, capacitance and impedance curves is reported. The overall approach is evaluated as a possible technique for SBS diagnostics for other pollu tants including: ozone, carbon monoxide, carbon diox ide, sulphur dioxide and nitrogen dioxide.

Original languageEnglish
JournalIndoor and Built Environment
Publication statusPublished - 1 Apr 2001

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Sick Building Syndrome
Electric Impedance
Growth
Nitrogen Dioxide
Sulfur Dioxide
Ozone
Aspergillus
Carbon Monoxide
Spores
Formaldehyde
Carbon
Cell Count
Gels
Food

Keywords

  • Aspergillus flavus
  • indoor air pollution
  • sick building syndrome
  • electrochemical growth curves

Cite this

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title = "Electrochemical growth curves of bio-indicators for sick building syndrome diagnostics",
abstract = "Studies on electrochemical growth curve bio-indicators leading to the electrochemical growth curves approach for sick building syndrome (SBS) diagnostics are dis cussed. The ideas incorporated within electrochemical growth curve studies, i.e. the conductance, capacitance and impedance of plated out and slope nutrient gels, vary according to the micro-organism type and number of cells (spores) present. Thus, this observation may be applied to the design and study of real-time diagnostics for SBS. Using formaldehyde at selected concentrations within the OEL, COSHH regulation concentration levels, the conductivity, capacitance and impedance growth curves for Aspergillus parasiticus were examined using a Bactometer. Reproducibility ofthese curves and trigger levels of pollutant causing significant deviation from nor mal growth conductivity, capacitance and impedance curves is reported. The overall approach is evaluated as a possible technique for SBS diagnostics for other pollu tants including: ozone, carbon monoxide, carbon diox ide, sulphur dioxide and nitrogen dioxide.",
keywords = "Aspergillus flavus, indoor air pollution, sick building syndrome, electrochemical growth curves",
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note = "Originally published in: Indoor and Built Environment (2001), 10 (3/4), pp.238-243.",
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Electrochemical growth curves of bio-indicators for sick building syndrome diagnostics. / O'Brien, G.; Aidoo, Kofi E.; Hepher, M. J.; El-Sharif, M.; Hytiris, Nicholas.

In: Indoor and Built Environment, 01.04.2001.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electrochemical growth curves of bio-indicators for sick building syndrome diagnostics

AU - O'Brien, G.

AU - Aidoo, Kofi E.

AU - Hepher, M. J.

AU - El-Sharif, M.

AU - Hytiris, Nicholas

N1 - Originally published in: Indoor and Built Environment (2001), 10 (3/4), pp.238-243.

PY - 2001/4/1

Y1 - 2001/4/1

N2 - Studies on electrochemical growth curve bio-indicators leading to the electrochemical growth curves approach for sick building syndrome (SBS) diagnostics are dis cussed. The ideas incorporated within electrochemical growth curve studies, i.e. the conductance, capacitance and impedance of plated out and slope nutrient gels, vary according to the micro-organism type and number of cells (spores) present. Thus, this observation may be applied to the design and study of real-time diagnostics for SBS. Using formaldehyde at selected concentrations within the OEL, COSHH regulation concentration levels, the conductivity, capacitance and impedance growth curves for Aspergillus parasiticus were examined using a Bactometer. Reproducibility ofthese curves and trigger levels of pollutant causing significant deviation from nor mal growth conductivity, capacitance and impedance curves is reported. The overall approach is evaluated as a possible technique for SBS diagnostics for other pollu tants including: ozone, carbon monoxide, carbon diox ide, sulphur dioxide and nitrogen dioxide.

AB - Studies on electrochemical growth curve bio-indicators leading to the electrochemical growth curves approach for sick building syndrome (SBS) diagnostics are dis cussed. The ideas incorporated within electrochemical growth curve studies, i.e. the conductance, capacitance and impedance of plated out and slope nutrient gels, vary according to the micro-organism type and number of cells (spores) present. Thus, this observation may be applied to the design and study of real-time diagnostics for SBS. Using formaldehyde at selected concentrations within the OEL, COSHH regulation concentration levels, the conductivity, capacitance and impedance growth curves for Aspergillus parasiticus were examined using a Bactometer. Reproducibility ofthese curves and trigger levels of pollutant causing significant deviation from nor mal growth conductivity, capacitance and impedance curves is reported. The overall approach is evaluated as a possible technique for SBS diagnostics for other pollu tants including: ozone, carbon monoxide, carbon diox ide, sulphur dioxide and nitrogen dioxide.

KW - Aspergillus flavus

KW - indoor air pollution

KW - sick building syndrome

KW - electrochemical growth curves

M3 - Article

JO - Indoor and Built Environment

JF - Indoor and Built Environment

SN - 1420-326X

ER -