Monitoring the purification of tobacco smoke in air assisted by ZnO nanowires and using MEMS-FTIR spectrometer for online continuous analysis of volatile organic compounds (VOCs)

2019 ◽  
Author(s):  
Léonce Martine Gnambodoe-Capochichi ◽  
Alaa Fathy ◽  
Young Jai Kim ◽  
Mazen Erfan ◽  
Marie Le Pivert ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Tobacco Smoke ◽  
Zno Nanowires ◽  
Continuous Analysis ◽  
Volatile Organic ◽  
Ftir Spectrometer

scholarly journals Continuous Monitoring of Air Purification: A Study on Volatile Organic Compounds in a Gas Cell

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 934 ◽  
Author(s):  
Alaa Fathy ◽  
Marie Le Pivert ◽  
Young Jai Kim ◽  
Mame Ousmane Ba ◽  
Mazen Erfan ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Indoor Air ◽  
Air Purification ◽  
Gas Cell ◽  
Oxide Nanowires ◽  
Continuous Adsorption ◽  
Volatile Organic ◽  
Ftir Spectrometer ◽  
Preliminary Study

Air pollution is one of the major environmental issues that humanity is facing. Considering Indoor Air Quality (IAQ), Volatile Organic Compounds (VOCs) are among the most harmful gases that need to be detected, but also need to be eliminated using air purification technologies. In this work, we tackle both problems simultaneously by introducing an experimental setup enabling continuous measurement of the VOCs by online absorption spectroscopy using a MEMS-based Fourier Transform infrared (FTIR) spectrometer, while those VOCs are continuously eliminated by continuous adsorption and photocatalysis, using zinc oxide nanowires (ZnO-NWs). The proposed setup enabled a preliminary study of the mechanisms involved in the purification process of acetone and toluene, taken as two different VOCs, also typical of those that can be found in tobacco smoke. Our experiments revealed very different behaviors for those two gases. An elimination ratio of 63% in 3 h was achieved for toluene, while it was only 14% for acetone under same conditions. Adsorption to the nanowires appears as the dominant mechanism for the acetone, while photocatalysis is dominant in case of the toluene.

Study of sorptive properties of trap systems for selective enrichment of volatile organic compounds from tobacco smoke samples

2008 ◽  
Vol 90 (1) ◽  
pp. 51-64 ◽  
Author(s):  
Bogusław Buszewski ◽  
Tomasz Ligor ◽  
Wojciech Filipiak ◽  
Maria Teresa Vasconcelos ◽  
Matevž Pompe ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Tobacco Smoke ◽  
Selective Enrichment ◽  
Volatile Organic

Characterization of Infrared Chemical Sensors Modified with ZnO Nanowires for the Detection of Volatile Organic Compounds

2005 ◽  
Vol 59 (8) ◽  
pp. 1002-1008 ◽  
Author(s):  
Jyisy Yang ◽  
Yu-Ru Shih ◽  
I-Cherng Chen ◽  
Chung-I Kuo ◽  
Yih-Shiaw Huang
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Enrichment Factors ◽  
Zno Nanowires ◽  
Regression Coefficients ◽  
Sensing System ◽  
Sensing Systems ◽  
Volatile Organic ◽  
Quantitative Analyses

In this paper we describe the application and characterization of zinc oxide (ZnO) nanowires in an infrared (IR) chemical sensing system for the detection of volatile organic compounds (VOCs). Under suitable conditions, we grew ZnO nanowires on the surfaces of IR internal reflection elements (IREs) and obtained successful results for the detection of VOCs. ZnO nanowires offer a large surface area to effectively adsorb the examined species; the sensitivity of these IR sensing systems was increased by 3- to 15-fold after surface treatment with the ZnO nanowires. To explore the performance of this type of sensor, we correlated the morphologies of the ZnO nanowires grown on the surfaces of the IREs with the adsorption behavior observed during the sensing of the VOCs. To characterize the properties of the ZnO nanowires during the detection of VOCs having a range of functionalities, we classified the VOCs and examined their enrichment factors by comparing the IR signals detected in the presence and absence of the ZnO nanowires. Our results indicate that the ZnO nanowires exhibited better performance for the detection of aromatic-type VOCs than they did for non-aromatic compounds. For quantitative analyses, we examined several compounds for their responses toward varying quantities of injected VOCs. Our results indicate that the IREs treated with ZnO nanowires display acceptable linearity in their standard curves; the linear regression coefficients were higher than 0.995 for a range of volatile compounds.

Indoor Chemistry:  Ozone and Volatile Organic Compounds Found in Tobacco Smoke

2001 ◽  
Vol 35 (13) ◽  
pp. 2758-2764 ◽  
Author(s):  
Richard J. Shaughnessy ◽  
T. J. McDaniels ◽  
Charles J. Weschler
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Tobacco Smoke ◽  
Volatile Organic ◽  
Indoor Chemistry

scholarly journals Effects of Nicotine and Tobacco-Related Products on the Feeding Behavior of the German Cockroach (Blattodea: Blattellidae)

2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Vincenzo Di Ilio ◽  
Michael A Birkett ◽  
John A Pickett
Keyword(s):  
Volatile Organic Compounds ◽  
Feeding Behavior ◽  
Organic Compounds ◽  
Tobacco Smoke ◽  
Local Environment ◽  
German Cockroach ◽  
Insect Behavior ◽  
Olfactory Responses ◽  
Feeding Experiments ◽  
Volatile Organic

AbstractAnimals use olfaction to detect developmentally significant volatile organic compounds (VOCs) in their local environment. As part of a wider study aiming to demonstrate that the olfactory responses of animals to VOCs can be modified through the creation of a drug-addicted status and association with a selected VOC, we investigated nicotine and tobacco smoke particulate (TSP) extract as possible addictive compounds for male German cockroaches, Blattella germanica (Linnaeus). In feeding experiments using an artificial food stimulus, food treated with TSP extract was preferred over untreated food. Surprisingly, nicotine, which was expected to be the most important addictive tobacco component, did not induce noticeable effects on cockroach behavior. Both TSP extract and nicotine were shown to be phagostimulants. Olfactometry assays that measured odor-mediated insect behavior demonstrated that male B. germanica did not choose TSP-extract-treated food even when attempts were made specifically to train them via this modality. These results support a hypothesis that B. germanica needs to consume TSP-containing food to show a clear preference for this stimulus and that gustatory mechanisms are involved due to compounds present in the TSP extract.

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