Comparison of gas sampling bags to temporarily store hydrogen sulfide, ammonia, and greenhouse gases

N. Akdeniz, K. A. Janni, L. D. Jacobson, B. P. Hetchler

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

1 Scopus citations

Abstract

The National Air Emission Monitoring Study (NAEMS) project measured gas emissions using automated semi-continuous gas analyzers. A more practical and cost effective gas sampling technique is to use portable systems to fill 50 L gas sample bags over 24 h sampling periods and measure gas concentrations later in a laboratory. For this technique, a gas sampling bag that can retain gases over 24 h is needed. The main objective of the study was to assess the impact of initial gas concentrations (low, medium, and high) and storage times (2, 6, 12, 24, 36, 48h) on hydrogen sulfide, total reduced sulfur, ammonia, methane, and nitrous oxide stability in Tedlar® and FlexFoil® bags. Bag reusability and background contamination were also investigated. Although it is not perfect, the FlexFoil® bag was recommended for 48 h storage of gases. Percent recovery from FlexFoil® bags was above 75% except for total reduced sulfur at high concentration levels. No gas generation/emission was observed from new FlexFoil® bags. FlexFoil® bags were more durable to mechanical stress and ageing effects. There was no need to use a cover to protect samples from sunlight. The cost of FlexFoil® bags was lower than that of Tedlar® bags.

Original languageEnglish (US)
Title of host publicationASABE - International Symposium on Air Quality and Waste Management for Agriculture 2010
Pages69-75
Number of pages7
StatePublished - Dec 1 2010
EventInternational Symposium on Air Quality and Waste Management for Agriculture 2010 - Dallas, TX, United States
Duration: Sep 13 2010Sep 16 2010

Publication series

NameASABE - International Symposium on Air Quality and Waste Management for Agriculture 2010

Other

OtherInternational Symposium on Air Quality and Waste Management for Agriculture 2010
Country/TerritoryUnited States
CityDallas, TX
Period9/13/109/16/10

Keywords

  • Ammonia
  • FlexFoil bag
  • Gas sampling
  • Greenhouse gases
  • Hydrogen sulfide
  • Tedlar bag

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