Analytical methods applied for ozone gas detection: A review

Recent trends in ozone sensing technology

“…1,2 At the ground level, the air quality standard for ozone is 60 ppb for 8 h. The concentration range recognized by OSHA for workstations as the occupational exposure limit (OEL) is 50-200 ppb, which is the recommended contact duration. 3,4 The primary source of ozone in the troposphere is the stratosphere, 5,6 while its second source is the photochemical reactions of NO x and volatile organic compounds (VOCs). 7 In the rst step, oxygen free radicals are formed due to the photolysis of nitrogen dioxide (NO 2 ).…”

A minireview of recent developments in ozone detection using optical chemodosimeters

“…Numerous analytical approaches, including UV/Visspectrometry, surface-enhanced Raman scattering, HPLC, electrochemical, chemiluminescence, and fluorescence techniques, have been applied for the detection of ozone. [31][32][33][34][35][36] However, fluorescence, chemiluminescence, and bioluminescence spectroscopic techniques have attracted a lot of interest from scientists because of their great sensitivity, outstanding selectivity, ease of operation, accuracy, affordability, quick response, low detection limits, non-invasive and nondestructive nature, high temporal and spatial resolution, and real-time monitoring capability in biological cells. [37][38][39][40][41] With this objective in mind, much effort has been expended over the past few decades to develop optical chemodosimeters (fluorescence, chemiluminescence, and bioluminescence) that can selectively detect O 3 .…”

AirQuality Lab-on-a-Drone: A Low-Cost 3D-Printed Analytical IoT Platform for Vertical Monitoring of Gaseous H2S

“…Despite their ability to provide near real-time responses, low cost, low power supply requirements, and low weight and size, these sensors usually have limits of detection on the order of ppmv, and their applications in realworld scenarios are not well-grounded due to the lack of field validation and calibration. 21 Additionally, MOX-based sensors are highly affected by changes in relative humidity. 22,23 On the other hand, gas sensors based on chemical methods that rely on a chemical collection of the analyte by a renewable reagent solution have been seen as an excellent alternative for gas sensing.…”