Development Of An Electronic Nose For Environmental Monitoring: Detection Of Specific Environmentally Important Gases At Their Odor Detection Threshold Concentration

Sironi

Rosso

2014

Self Cite

197

116

Electronic nose applications in environmental monitoring are nowadays of great interest, because of the instruments' proven capability of recognizing and discriminating between a variety of different gases and odors using just a small number of sensors. Such applications in the environmental field include analysis of parameters relating to environmental quality, process control, and verification of efficiency of odor control systems. This article reviews the findings of recent scientific studies in this field, with particular focus on the abovementioned applications. In general, these studies prove that electronic noses are mostly suitable for the different applications reported, especially if the instruments are specifically developed and fine-tuned. As a general rule, literature studies also discuss the critical aspects connected with the different possible uses, as well as research regarding the development of effective solutions. However, currently the main limit to the diffusion of electronic noses as environmental monitoring tools is their complexity and the lack of specific regulation for their standardization, as their use entails a large number of degrees of freedom, regarding for instance the training and the data processing procedures.

Section: Electronic Nosesmentioning

confidence: 99%

Electronic Noses for Environmental Monitoring Applications

Sironi

Rosso

2014

Self Cite

197

116

“…In Italy, the research related to the development and application of the e-nose in the environmental field is very active [41,42,43,44,45,46,47,48,49,50,51,52]. Issues mainly dealt with:

The identification of a method to evaluate the performances of the electronic nose.

…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have dealt with issues relating the development of electronic noses as tools for the diagnosis of different cancer types (such as those involving lungs, bladders, and prostates) and the identification of different bacterial infections [ 27 , 28 , 29 , 30 , 31 , 32 ]; The environmental sector [ 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 ]; a recent review [ 36 ] on the application of electronic noses in environmental monitoring considered four main research activities: the analysis of parameters related to air quality; the analysis of parameters related to water quality; the process control; and the verification of efficiency of odour control systems. In Italy, the research related to the development and application of the e-nose in the environmental field is very active [ 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 ]. Issues mainly dealt with: The identification of a method to evaluate the performances of the electronic nose.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Indoor Odour Impact in a Naturally Ventilated Room

Eusebio

Derudi

et al. 2017

Self Cite

Indoor air quality influences people’s lives, potentially affecting their health and comfort. Nowadays, ventilation is the only technique commonly used for regulating indoor air quality. CO2 is the reference species considered in order to calculate the air exchange rates of indoor environments. Indeed, regarding air quality, the presence of pleasant or unpleasant odours can strongly influence the environmental comfort. In this paper, a case study of indoor air quality monitoring is reported. The indoor field tests were conducted measuring both CO2 concentration, using a photoacoustic multi-gas analyzer, and odour trends, using an electronic nose, in order to analyze and compare the information acquired. The indoor air monitoring campaign was run for a period of 20 working days into a university room. The work was focused on the determination of both CO2 and odour emission factors (OEF) emitted by the human activity and on the evaluation of the odour impact in a naturally ventilated room. The results highlighted that an air monitoring and recycling system based only on CO2 concentration and temperature measurements might be insufficient to ensure a good indoor air quality, whereas its performances could be improved by integrating the existing systems with an electronic nose for odour detection.

“…Since the first instrument developed mainly for laboratory use (EOS 835) [21], during the last years an innovative electronic nose was realized (EOS 507) [22], designed with the aim of guaranteeing better performance in the field under variable meteorological conditions and with diluted odours [23]. …”

Section: Introductionmentioning

confidence: 99%

Development of an Electronic Nose for Environmental Odour Monitoring

Dentoni

Sironi

et al. 2012

Self Cite

Exhaustive odour impact assessment should involve the evaluation of the impact of odours directly on citizens. For this purpose it might be useful to have an instrument capable of continuously monitoring ambient air quality, detecting the presence of odours and also recognizing their provenance. This paper discusses the laboratory and field tests conducted in order to evaluate the performance of a new electronic nose, specifically developed for monitoring environmental odours. The laboratory tests proved the instrument was able to discriminate between the different pure substances being tested, and to estimate the odour concentrations giving correlation indexes (R2) of 0.99 and errors below 15%. Finally, the experimental monitoring tests conducted in the field, allowed us to verify the effectiveness of this electronic nose for the continuous detection of odours in ambient air, proving its stability to variable atmospheric conditions and its capability to detect odour peaks.