Revisiting the method for measuring ammonia concentrations in ambient air or exhaust air stream using acid traps

Pius M. Ndegwa, Venkata K. Vaddella, Hungsoo Joo, Alexander N. Hristov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Strong acid solutions have been widely used in acid traps to determine concentrations of ammonia in ambient air or exhaust air stream. A study was carried out to examine factors that might affect the efficiency of sulfuric acid traps. An inverse relationship between the efficiency of the acid traps and the amount of ammonia to be trapped was observed. For the same volume of acid, the efficiency of the acid trap increased with the acid depth but overall, the efficiency at any given acid depth decreased as the amount of ammonia through the trap increased. The efficiency of the acid traps decreased at similar rates as the concentration of ammonia in the sample air increased but the efficiency of the trap was significantly higher at the lower airflow rate. Multi-point calibrations within the entire range of target measurements is recommended to provide accurate corrections of the measurements. This is an abstract of a paper presented at the 102nd AWMA Annual Conference (Detroit, MI 6/16-19/2009).

Original languageEnglish (US)
Title of host publication102nd Air and Waste Management Association Annual Conference and Exhibition 2009
Pages2678-2689
Number of pages12
StatePublished - Dec 1 2009
Event102nd Air and Waste Management Association Annual Conference and Exhibition 2009 - Detroit, MI, United States
Duration: Jun 16 2009Jun 19 2009

Publication series

NameProceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA
Volume4
ISSN (Print)1052-6102

Other

Other102nd Air and Waste Management Association Annual Conference and Exhibition 2009
CountryUnited States
CityDetroit, MI
Period6/16/096/19/09

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Energy(all)

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  • Cite this

    Ndegwa, P. M., Vaddella, V. K., Joo, H., & Hristov, A. N. (2009). Revisiting the method for measuring ammonia concentrations in ambient air or exhaust air stream using acid traps. In 102nd Air and Waste Management Association Annual Conference and Exhibition 2009 (pp. 2678-2689). (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA; Vol. 4).