Field evaluation of five volatile organic compound measurement techniques: Implications for green building decision making

Nirlo, Elena L.; Crain, Neil; Corsi, Richard L.; Siegel, Jeffrey A.

doi:10.1080/10789669.2014.969172

Cited by 9 publications

(4 citation statements)

References 26 publications

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“…TVOCs are composed of a multitude of volatile organic compounds, and each pollutant source is generating different kinds of VOCs. A comprehensive study showed that TVOC sensors have different sensitivity to various VOC sources, depending on their working principle [41]. This was shown to be most evident for PID sensors, which can be expected to produce agreeable results to laboratory air sampling only when measuring specific groups of compounds which they are calibrated for.…”

Section: Discussionmentioning

confidence: 99%

“…For TVOC measurements, no true reference was considered owing to the current technological limitations for measuring time-resolved TVOCs [41]. As an alternative, two professional grade TVOC monitors were deployed: a) GrayWolf AdvancedSense Pro with an IQ-610 Indoor Air Quality Probe with a 10.6 eV lamp (named here as GW) and a range of 0.02-20 ppm; and b) Aeroqual Photoionization Detector (PID, abbreviated as AerPID) with a 10.6 eV lamp and a range of 0.01-20 ppm and a factory accuracy calibration of < ±0.2 ppm + 10%.…”

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confidence: 99%

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Performance assessment of low-cost environmental monitors and single sensors under variable indoor air quality and thermal conditions

Demanega

Mujan

Singer

et al. 2021

Building and Environment

110

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Recent technological advancements have enabled the development and deployment of low-cost consumer grade monitors for ubiquitous and time-resolved indoor air quality monitoring. With their reliable performance, this technology could be instrumental in enhancing automatic controls and human decision making. We conducted a comprehensive performance evaluation of eight consumer grade multiparameter monitors and eight single-parameter sensors in detecting particulate matter, carbon dioxide, 18 total volatile organic compounds, dry-bulb air temperature, and relative humidity. In the controlled 19 chamber, we generated eight air pollution sources, each at two thermodynamic conditionscool and dry (20±1°C, 30±5%), and warm and humid (26±1°C, 70±5%). The majority of tested devices underreported reference particle measurements by up to 50%, provided acceptable responses for carbon dioxide within 15% and diverging results with poor quantitative agreement for total volatile organic compounds. Despite the reported disparities in quantitative agreements, most of the low-cost devices could detect source events and were strongly correlated with the reference data, suggesting that these units could be suitable for measurement-based indoor air quality management. Most of the tested devices have also proven to competently measure air temperature (within +/-0.6°C) and relative humidity (within +/-5% RH) and maintained a stable measurement accuracy over the two thermodynamic conditions.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Performance assessment of low-cost environmental monitors and single sensors under variable indoor air quality and thermal conditions

Demanega

Mujan

Singer

et al. 2021

Building and Environment

110

View full text Add to dashboard Cite

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“…The application of nitro-aromatic compounds (NAC) involves many industries, and NACs are important components in the manufacture of explosives. 1 They have relatively high stability and bioaccumulation ability 2 and are difficult to degrade. They are serious environmental pollutants accordingly.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-bodipy macromolecular fluorescent probes prepared by click reactions for highly sensitive and selective recognition of 2,4-dinitrophenylhydrazine

2022

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“…TVOCs sensors have different sensitivity to various VOC sources, depending on the environment [20]. The current limitations of the technologies in use cannot measure time resolved TVOCs [66]. Professional grade sensors have produced similar results to the laboratory air sampling which had been calibrated, but low-cost monitors have indicated poor relationship under different environmental testing conditions 17].…”

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confidence: 99%

Evaluating Indoor Air Quality Monitoring Devices for Healthy Homes

Peters,

Zhen

2023

Buildings

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In light of COVID-19, people are increasingly anxious about indoor air quality data in places where they live and work. Access to this data using a consumer-grade air quality monitor has become a way of giving agency to building users so that they can understand the ventilation effectiveness of the spaces where they spend their time. Methods: Fourteen low-cost, air quality devices marketed to consumers were tested (seven types, two of each product): AirBird, Airthings View Plus, Aranet4 Home, Awair Omni, Eve Room, Laser Egg + CO2, and Purple Air PA-1. The study focus was accuracy and useability using three methods: a low-cost laboratory setting to test accuracy for CO2; a comparison to a calibrated, research grade meter for particulate matter (PM2.5), temperature, and relative humidity; and short-term field testing in a residential environment to understand the quality of feedback given to users. Results: Relating to accuracy, all devices were within acceptable ranges for temperature, relative humidity, and CO2, and only one brand’s results met the accuracy threshold with the research grade monitor when testing PM2.5. In terms of usability, a significant variation in response time and data visualization was found on the devices or in the smartphone applications. Conclusions: While accuracy in IAQ data is important, in low-cost air quality devices marketed to consumers it is just as important that the data be presented in a way that can be used to empower people to make decisions and modify their indoor environment. We concluded that response time, user-interface, data sharing, and visualization are important parameters that may be overlooked if a study just focuses on accuracy. The design of the device, including its appearance, size, portability, screen brightness, and sound or light warning, must also be considered. The act of measuring is important, and more studies should focus on how users interpret and react to building performance data.

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Field evaluation of five volatile organic compound measurement techniques: Implications for green building decision making

Cited by 9 publications

References 26 publications

Performance assessment of low-cost environmental monitors and single sensors under variable indoor air quality and thermal conditions

Performance assessment of low-cost environmental monitors and single sensors under variable indoor air quality and thermal conditions

Chitosan-bodipy macromolecular fluorescent probes prepared by click reactions for highly sensitive and selective recognition of 2,4-dinitrophenylhydrazine

Evaluating Indoor Air Quality Monitoring Devices for Healthy Homes

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