Effects of Water Removal Devices on Ambient Inorganic Air Pollutant Measurements

Dong-June Kim, Trieu-Vuong Dinh, Joo-Yeon Lee, In-Young Choi, Dong-Jin Son, In-Young Kim, Young Sunwoo and Jo-Chun Kim
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Dong-June Kim: Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Korea
Trieu-Vuong Dinh: Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Korea
Joo-Yeon Lee: Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Korea
In-Young Choi: Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Korea
Dong-Jin Son: Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Korea
In-Young Kim: Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Korea
Young Sunwoo: Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Korea
Jo-Chun Kim: Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Korea

IJERPH, 2019, vol. 16, issue 18, 1-9

Abstract: Water vapor is a pivotal obstacle when measuring ambient air pollutants. The effects of water vapor removal devices which are called KPASS (Key-compound PASSer) and Cooler. On the measurement of O 3 , SO 2 , and CO at ambient levels were investigated. Concentrations of O 3 , SO 2 , and CO were 100 ppb, 150 ppb, and 25 ppm, respectively. The amount of water vapor varied at different relative humidity levels of 30%, 50%, and 80% when the temperature was 25 °C and the pressure was 1 atm. Water vapor removal efficiencies and recovery rates of target gases were also determined. The KPASS showed a better performance than the Cooler device, removing 93.6% of water vapor and the Cooler removing 59.2%. In terms of recovery, the KPASS showed a better recovery of target gases than the Cooler. Consequently, it is suggested that the KPASS should be an alternative way to remove water vapor when measuring O 3 , SO 2 , and CO.

Keywords: KPASS; cooler; ozone; sulfur dioxide; carbon monoxide; water removal device; ambient air pollutants (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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