Journal
TALANTA
Volume 100, Issue -, Pages 145-152Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2012.07.074
Keywords
Biogas; Tedlar bags; Thermal desorption; GC-MS
Categories
Funding
- Departament d'Innovacio, Universitats i Empreses, Generalitat de catalunya [SGR 223]
- CDTI, Ministerio de Ciencia e Innovacion, Spanish Government, Programa Ingenio [CEN-2008-1027]
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Different sampling methods involving the collection of biogas by Tedlar bags or adsorption tubes, and different GC-MS injection systems, loop injection or cold trap injection (with bags or by tube desorption), were compared to establish the best method to determine the minority compounds in biogas from sewage treatment plants (STPs). A study of parameters is included, such as the stability of compounds in Tedlar bags or cartridges and the adsorption effect of some less volatile compounds in the thermal desorption system (TD). The optimized methods allowed to determine most compounds at low mg m(-3) levels. Among them, maximum values of D5 (4.84 mg m(-3)), decane (95-118 mg m(-3)) and H2S (2223 mg m(-3)) were found in biogas samples. (C) 2012 Elsevier B.V. All rights reserved.
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