Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: Nazzari, M.*
Sciarra, A.*
Quattrocchi, F.*
Title: A simple and sensitive gas chromatography–electron capture detection method for analyzing perfluorocarbon tracers in soil gas samples for storage of carbon dioxide
Title of journal: International Journal of Greenhouse Gas Control
Series/Report no.: /14 (2013)
Publisher: Elsevier
Issue Date: May-2013
DOI: 10.1016/j.ijggc.2012.12.029
Keywords: Perfluorocarbon tracers; Soil gas; Carbon dioxide storage; Leakage monitoring; GC–ECD
Abstract: Co-injection of a conservative tracer during the geological sequestration of CO2 can imprint a marker to the injected gas that can be easily recognized during soil gas surveys in case of CO2 leakage from the reservoir toward the surface. In this work, an ultra-trace detection method, based on gas chromatography with electron capture detection for analyzing perfluorocarbon tracers (PFTs) in soil gas samples was optimized. Three totally fluorinated cycloalcane compounds consisting of five and six atom carbon rings were selected for this purpose. We evaluated the feasibility of collecting PFTs on adsorbent tube packed with a commercial graphitized carbon black (Carbotrap™ 100) sampling 2 L of soil gas. The sorbent tubes were then analyzed by using a two-stage thermal desorption process. The developed method allows to quickly determine these compounds at very low fL/L level, method identification limits ranged from 1.3 to 5.8 fL/L. Moreover, it shows good precision, evaluated by within-day and between-day studies. A preliminary survey of the PFT soil gas background concentrations, conducted by analyzing some soil gas samples collected in two different areas in Central Italy and in the Po Plain, ascertained the PFT background concentration lower than MIL.
Appears in Collections:04.02.01. Geochemical exploration
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
International Journal of Greenhouse Gas Control 14 (2013) 60–64.pdfMain article275.38 kBAdobe PDFonly authorized users View/Open
A simple and sensitive gas chromatography- electron capture detection method for analyzing perfluorocarbon tracers in soil gas samples for storage of carbon dioxide.pdfManuscript281.41 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA