Show simple item record

dc.contributor.authorGallego Piñol, Eva
dc.contributor.authorRoca Mussons, Francisco Javier
dc.contributor.authorPerales Lorente, José Francisco
dc.contributor.authorGuardino Solà, Xavier
dc.contributor.authorGadea Carrera, Enrique
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.identifier.citationGallego, E. [et al.]. Development of a method for determination of VOCs (including methylsiloxanes) in biogas by TD-GC/MS analysis using Supel™ Inert Film bags and multisorbent bed tubes. "International journal of environmental analytical chemistry", 16 Març 2015, vol. 95, núm. 4, p. 291-311.
dc.description.abstractAn analytical method based on TD-GC/MS was developed and validated for the determination of volatile organic compounds (VOCs), including linear and cyclic volatile methylsiloxanes (VMSs), in biogas. Biogas was first sampled in Supel™ Inert Film bags and subsequently dynamically sampled onto multisorbent bed tubes (Carbotrap, Carbopack X and Carboxen 569) using portable pump equipment. Two sample volumes, 100 and 250 ml, were evaluated. Desorption efficiency values for both volumes are in the range of 99–100% for almost all studied compounds while breakthrough values (%VOC on sample tube back section) are below 1% for most evaluated VOCs. However, acetaldehyde, carbon disulphide, ethanol and 1,3-butadiene have breakthrough values higher than 5%. Method detection limits were in the range of 0.01–0.8 ng per sample. The most abundant VOCs in biogas were terpenes with concentrations between 500 and 700 mg m-3. Other important families were ketones, aromatic hydrocarbons and alkanes, with concentrations in the range of 36–46 , 20–35 and 14–16 mg m-3, respectively. VMSs presented average concentrations of 4.9 ± 0.4 mg m-3. Additionally, the Supel™ Inert Film bags were evaluated for stability for 4 days at room temperature. Although several VOC families’ concentrations in the bag increased or decreased significantly (t-test; p = 0.01, n = 5) 2 days after collection, recoveries were around 70–130% for most studied VOCs. The results shown demonstrate that the presented methodology is reliable and satisfactory for the evaluation of VOCs in biogas and presents an alternative to the currently existing biogas analytical techniques.
dc.format.extent21 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Impacte ambiental
dc.subject.lcshVolatile organic compounds
dc.subject.othervolatile methylsiloxanes
dc.subject.othervolatile organic compounds
dc.subject.otherwaste treatment
dc.titleDevelopment of a method for determination of VOCs (including methylsiloxanes) in biogas by TD-GC/MS analysis using Supel™ Inert Film bags and multisorbent bed tubes
dc.subject.lemacCompostos orgànics volàtils -- Aspectes ambientals
dc.contributor.groupUniversitat Politècnica de Catalunya. CEPIMA - Center for Process and Environment Engineering
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author’s final draft)
upcommons.citation.authorGallego, E.; Roca, F.; Perales, J.; Guardino, X.; Gadea, E.
upcommons.citation.publicationNameInternational journal of environmental analytical chemistry

Files in this item


This item appears in the following Collection(s)

Show simple item record

Except where otherwise noted, content on this work is licensed under a Creative Commons license: Attribution-NonCommercial-NoDerivs 3.0 Spain