2018
DOI: 10.2507/29th.daaam.proceedings.126
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New Approach of Measuring Toxic Gases Concentrations: Application Examples

Abstract: Low-cost electrochemical sensors and in-house developed data acquisition system are used in two experiments, which reflect real-life scenarios of air pollution. Primary aim of this research is evaluation of the new approach for measuring the concentrations of toxic gases in realistic, everyday situations. These experiments include: continuous diurnal monitoring of toxic gases concentrations in public underground garage and mobile measurements of toxic gases concentrations on urban streets in real time using th… Show more

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Cited by 3 publications
(2 citation statements)
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“…There are several key findings from this analysis. (1) The RMS fluctuation and amplitude of the baseline current noise of an electrochemical gas sensor is amplified by acoustic stimulation; (2) The magnitude of this amplification depends on the proximity of the sensor to the source of sound; (3) The high frequency time series data for the baseline current can be decomposed into constituent frequencies, which depend on the frequency of the acoustic stimulation and the sampling rate; (4) A mixed sound can be decomposed into the individual sound frequencies that make up the mixture.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…There are several key findings from this analysis. (1) The RMS fluctuation and amplitude of the baseline current noise of an electrochemical gas sensor is amplified by acoustic stimulation; (2) The magnitude of this amplification depends on the proximity of the sensor to the source of sound; (3) The high frequency time series data for the baseline current can be decomposed into constituent frequencies, which depend on the frequency of the acoustic stimulation and the sampling rate; (4) A mixed sound can be decomposed into the individual sound frequencies that make up the mixture.…”
Section: Resultsmentioning
confidence: 99%
“…In addition to the target gas reactions, there are baseline current reactions taking place at the working electrode, most likely oxygen reduction and electrode oxidation. [3] These result in a non-zero baseline current at the working electrode in the absence of target gas, caused by humidity dependent variations of the sulfuric acid concentration between the working and reference electrodes. [4,5] Electrochemical sensors have been explored as a low-cost method for measuring the concentration of critical pollutant gases in outdoor, typically urban, environments.…”
Section: Introductionmentioning
confidence: 99%