Please use this identifier to cite or link to this item:
Title: Gas chromatography - optical fiber detector for assessment of fatty acids in urban soils
Author: Silva, Lurdes
Cachada, Anabela
Pereira, Ruth
Freitas, Ana Cristina
Rocha-Santos, Teresa A. P.
Panteleitchouk, Teresa S. L.
Pereira, Maria E.
Duarte, Armando Costa
Keywords: Fatty acids
Urban soil
Issue Date: 2011
Publisher: Elsevier
Abstract: Fatty acids have been used as biomarkers of the microbial community composition of soils and they are usually separated and quantified by gas-chromatography coupled to a flame ionization detector (GC-FID). The aim of this study was to develop, validate and apply a methodology based on gas chromatography coupled to optical fiber detection (GC-OF) for screening five fatty acids used as indicators of fungal and bacterial communities in urban soils. The performance of the GC-OF methodology (optical fiber detector at 1,550 nm) was evaluated by comparison with the GC-FID methodology and it was found that they were comparable in terms of linear range, detection limit and analytical errors. Besides these similar analytical characteristics, the GC-OF is much cheaper than the GC-FID methodology. Different concentrations were determined for each fatty acid indicator which in turn varied significantly between the soil samples analyzed from Lisbon ornamental gardens. Additionally, the GC-OF showed a great potential as alternative for determination of eleven or more fatty acids in urban soils.
Peer review: yes
DOI: 10.1016/j.talanta.2011.03.044
ISSN: 0039-9140
Appears in Collections:CESAM - Artigos
DBio - Artigos
DQ - Artigos

Files in This Item:
File Description SizeFormat 
Silva et al. - 2011 - Gas chromatography - Optical fiber detector for as.pdf517.58 kBAdobe PDFrestrictedAccess

Formato BibTex MendeleyEndnote Degois 

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