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 O3, SO2, and CO at ambient levels were investigated. Concentrations of O3, SO2, 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 O3, SO2, and CO.
Subject
Health, Toxicology and Mutagenesis,Public Health, Environmental and Occupational Health
Reference31 articles.
1. Air pollution and control action in Beijing
2. Evolution of WHO Air Quality Guidelines;Maynard,2017
3. Air Quality—Determination of Ozone in Ambient Air—Ultraviolet Photometric Method,1998
4. Water Vapor Interference in the UV Absorption Measurement of Atmospheric Ozone;Wilson,2005
5. Effect of Water and Carbon Dioxide in Chemiluminescent Measurement of Oxides of Nitrogen
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献