Tzu Ting Yang 1, Shaw Tao Lin2, Hsueh Fen Hung1, Ruei Hao Shie3, Jyun Jie Wu1

  • 1 Department of Environmental Engineering and Health, Yuanpei University, No. 306, Yuanpei St., Hsin Chu 300, Taiwan
  • 2 Department of Applied Chemistry, Providence University, 200 Chung-Chi Rd., Salu Dist., Taichung City 43301, Taiwan
  • 3 Advanced Monitoring and Analytical Department, Industrial Technology Research Institute, No. 321, Kuang Fu Rd., Sec. 2, Hsin Chu 300, Taiwan

Received: July 12, 2012
Revised: October 9, 2012
Accepted: October 9, 2012
Download Citation: ||https://doi.org/10.4209/aaqr.2012.07.0182 

  • Download: PDF


Cite this article:
Yang, T.T., Lin, S.T., Hung, H.F., Shie, R.H. and Wu, J.J. (2013). Effect of Relative Humidity on Polycyclic Aromatic Hydrocarbon Emissions from Smoldering Incense. Aerosol Air Qual. Res. 13: 662-671. https://doi.org/10.4209/aaqr.2012.07.0182


 

ABSTRACT


Incense was burned in a controlled environment, in order to understand the effect of relative humidity on polycyclic aromatic hydrocarbons (PAHs) emissions from smoldering incense. The concentrations of individual PAHs were determined using the GC/MS analysis method. Incense was burned in a test chamber with a total airflow rate of 6.0 L/min, with relative humidity of 21.3 ± 1.0, 51.0 ± 0.2 and 90.5 ± 0.5%, at a constant temperature (28.9 ± 0.4°C). The results show that the rate at which the incense burns decreases linearly as the relative humidity increases, at the tested airflow rate. The sums of the total PAH and toxic equivalency emission factors for particulate and gas phases were 47467.39–50218.87 and 325.21–358.85 ng/g, for the incense used in this study, and these values also decrease as the relative humidity increases. The carcinogenic potency of PAHs emissions in the particulate phase is approximately 6 times higher than those of the gaseous phase, at the relative humidity tested.


Keywords: Polycyclic aromatic hydrocarbons; Incense; Emission factors; Total toxic equivalency; Relative humidity


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

Coronavirus COVID-19 articles from Aerosol and Air Quality Research

2018 Impact Factor: 2.735

5-Year Impact Factor: 2.827


SCImago Journal & Country Rank

Sign up to AAQR Newsletter

Sign up to receive latest research, letters to the editors, and review articles, delivered to your inbox every second week!