Ernesto Saiz
Portable, low-cost, Raspberry Pi-based optical sensor (PiSENS): continuous monitoring of atmospheric nitrogen dioxide
Saiz, Ernesto; Banicevic, Ivana; Espinoza Torres, Sergio; Bertata, Salma; Picasso, Gino; O'Brien, Matthew; Radu, Aleksandar
Authors
Ivana Banicevic
Sergio Espinoza Torres
Salma Bertata
Gino Picasso
Matthew O'Brien m.obrien@keele.ac.uk
Aleksandar Radu
Abstract
We have developed a sensing system that utilizes a low-cost computer (Raspberry Pi) and its imaging camera as an optical sensing core for the continuous detection of NO2 in the air (PiSENS-A). The sensor is based on colour development as a consequence of the interaction of the gas with an absorbing solution. The PiSENS-A is thoroughly calibrated over the hourly mean which is used as one of the key metrics in evaluating air quality. The calibration was performed in the range of 0 < [NO2] < 476 μg m−3 chosen to contain the threshold used to determine compliance to the UK's Air Quality Standard Regulations (2010) expressed as a maximum of 18 permitted exceedances of [NO2]hourly mean = 200 μg per m3 per year. Lab-based measurements were evaluated against UV-vis. The average precision expressed as a relative standard deviation was: RSD% = 2.8%, while the correlation of mock samples was excellent (Pearson's r = 1.000). Field-based measurements were evaluated against chemiluminescence-based instrument exhibiting a correlation coefficient of R2 = 0.993. The PiSENS-A was also deployed as an independent air quality analyser at the Keele University campus.
Citation
Saiz, E., Banicevic, I., Espinoza Torres, S., Bertata, S., Picasso, G., O'Brien, M., & Radu, A. (in press). Portable, low-cost, Raspberry Pi-based optical sensor (PiSENS): continuous monitoring of atmospheric nitrogen dioxide. Analytical Methods, 15(4), 482-491. https://doi.org/10.1039/d2ay01433e
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 22, 2022 |
Online Publication Date | Dec 22, 2022 |
Deposit Date | May 30, 2023 |
Journal | Analytical Methods |
Print ISSN | 1759-9660 |
Electronic ISSN | 1759-9679 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 15 |
Issue | 4 |
Pages | 482-491 |
DOI | https://doi.org/10.1039/d2ay01433e |
Keywords | General Engineering; General Chemical Engineering; Analytical Chemistry |
Public URL | https://keele-repository.worktribe.com/output/427345 |
You might also like
9 Immobilized Reagents and Multistep Processes
(2018)
Book Chapter
Downloadable Citations
About Keele Repository
Administrator e-mail: research.openaccess@keele.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search