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Article

The Influence of Hydrogen on the Indications of the Electrochemical Carbon Monoxide Sensors

Faculty of Fire Safety Engineering, The Main School of Fire Service, 52/54 Słowackiego St., 01-629 Warsaw, Poland
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Received: 15 November 2019 / Revised: 13 December 2019 / Accepted: 16 December 2019 / Published: 18 December 2019
(This article belongs to the Special Issue Green Technologies in Air Treatment)
This article examines electrochemical carbon monoxide (CO) sensors used as mobile devices by rescue and firefighting units in Poland. The conducted research indicates that the presence of chlorine (Cl2), ammonia (NH3), hydrogen sulfide (H2S), hydrogen chloride (HCl), hydrogen cyanide (HCN), nitrogen (IV) oxide (NO2), and sulfur (IV) oxide (SO2) in the atmosphere does not affect the functioning of the electrochemical CO sensor. In the case of this sensor, there was a significant cross effect in relation to hydrogen (H2). It was found that the time and manner of using the sensor affects the behavior in relation to H2. Such a relationship was not recorded for CO. Measurements in a mixture of CO and H2 confirm the effect of hydrogen on the changes taking place inside the sensor. Independently of the ratio of H2 to CO, readings of CO were flawed. All analyses showed a significant difference between the electrochemical CO sensor readings and the expected values. Only in experiments with a 1:3 mixture of CO and H2 was the relative error less than 15%. The relative error in the analyzed concentration range for a sensor with an additional compensation electrode ranged from 7% to 38%; for a sensor without this electrode, it ranged from 23% to 55%. It was ascertained that in the cases of measurements for tests carried out at higher concentrations of H2 in relation to CO, a sensor with an additional electrode is significantly better (more accurate) than a sensor without such an electrode. Differences at the significance level p = 0.01 for measurements made in the CO:H2 mixture at a ratio of 1:3 were ascertained. View Full-Text
Keywords: electrochemical sensor (EC), crossing effect; measurement carbon monoxide; interfering gases; hydrogen electrochemical sensor (EC), crossing effect; measurement carbon monoxide; interfering gases; hydrogen
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MDPI and ACS Style

Majder-Łopatka, M.; Węsierski, T.; Dmochowska, A.; Salamonowicz, Z.; Polańczyk, A. The Influence of Hydrogen on the Indications of the Electrochemical Carbon Monoxide Sensors. Sustainability 2020, 12, 14. https://0-doi-org.brum.beds.ac.uk/10.3390/su12010014

AMA Style

Majder-Łopatka M, Węsierski T, Dmochowska A, Salamonowicz Z, Polańczyk A. The Influence of Hydrogen on the Indications of the Electrochemical Carbon Monoxide Sensors. Sustainability. 2020; 12(1):14. https://0-doi-org.brum.beds.ac.uk/10.3390/su12010014

Chicago/Turabian Style

Majder-Łopatka, Małgorzata, Tomasz Węsierski, Anna Dmochowska, Zdzisław Salamonowicz, and Andrzej Polańczyk. 2020. "The Influence of Hydrogen on the Indications of the Electrochemical Carbon Monoxide Sensors" Sustainability 12, no. 1: 14. https://0-doi-org.brum.beds.ac.uk/10.3390/su12010014

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