The Power of Online Proton Transfer Reaction - Mass Spectrometry (PTR-MS) Measurement of Odorous Emissions from a Pig House

被引：2
|
作者：
Van Huffel, Katrijn [1 ]
Hansen, Michael J. [2 ]
Feilberg, Anders [2 ]
Liu, Dezhao [2 ]
Van Langenhove, Herman [1 ]
机构：
[1] Univ Ghent, Dept Sustainable Organ Chem & Technol, Fac Bioscgioence Engn, Res Grp EnVOC, Coupure Links 653, B-9000 Ghent, Belgium
[2] Aarhus Univ, Res Grp Air Quality Engn, Dept Engn, DK-8200 Aarhus, Denmark
来源：
NOSE2014: 4TH INTERNATIONAL CONFERENCE ON ENVIRONMENTAL ODOUR MONITORING AND CONTROL | 2014年 / 40卷
关键词：
DYNAMIC OLFACTOMETRY; NITROUS-OXIDE; VENTILATION; WASTE; ODORANTS; SLURRY; AIR;
D O I：
10.3303/CET1440041
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Online monitoring of odorous compounds in the ventilation air was applied in an experimental pig house in Denmark. The measurements were executed by proton-transfer-reaction mass spectrometry (PTR-MS) while grab samples are used to confirm the identity of the compounds. Sorbent tubes samples were analysed by gas chromatography mass spectrometry analysis (GC-MS) and Tedlar bags samples by gas chromatography sulfur chemiluminescence detector (GC-SCD). For three target odorants, dimethyl sulfide, propanoic acid and p-cresol, the reproducibility after averaging over 1 hour was in the same order of magnitude for both grab and continuous sampling (<16 %). However, the detailed information on the concentration variations during the day provided by online measurements, can never be obtained by any analytic method requiring sample collection. The results emphasize the importance of a suitable strategy when taking grab samples for odour evaluation, for example for olfactometric measurements. Concentrations of odorants can easily differ by a factor of two within one week with similar weather circumstances and identical pigs.
引用
收藏
页码：241 / +
页数：2
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