Methodological variation in headspace analysis of liquid samples using electronic nose

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dc.contributor.author Knobloch, Henri
dc.contributor.author Turner, Claire
dc.contributor.author Spooner, Andrew
dc.contributor.author Chambers, Mark
dc.date.accessioned 2009-07-25T11:46:30Z
dc.date.available 2009-07-25T11:46:30Z
dc.date.issued 2009-06-04
dc.identifier.citation Henri Knobloch, Claire Turner, Andrew Spooner, Mark Chambers, Methodological variation in headspace analysis of liquid samples using electronic nose, Sensors and Actuators B: Chemical, Volume 139, Issue 2, 4 June 2009, Pages 353-360 en_UK
dc.identifier.issn 0925-4005
dc.identifier.uri http://hdl.handle.net/1826/3482
dc.identifier.uri http://dx.doi.org/10.1016/j.snb.2009.03.007
dc.description.abstract In past years, numerous electronic nose (e-nose) developments have been published describing analyses of solid-, liquid- or gaseous media in microbiological-, environmental-, agricultural- or medical applications. However, little has been reported about complex methodological pitfalls that might be associated with commercially available e-nose technology. In this paper, some of these pitfalls such as temperature, the use of filters and mass flow using different sampling methods (static- and dynamic sampling) are described for two generations of conducting polymer e-noses (ST114/214, CPs, both Scensive Tech. Ltd.). A comparison with metal oxide semiconducting field effect transistor/metal oxide semiconductor (MOSFET/MOS) e-noses regarding stability across replicates and over time was made. Changes in temperature were found to give larger sensor responses, whereas the application of filters led to quantitative and qualitative changes in sensor responses due to a change in mass flow which was also affected by the sampling method. Static sampling provided more stable flows across replicates. Variation was investigated for CPs and MOSFET/MOS e-noses that gave different responses over time and across replicates. These methodological factors cause a lack of stability and reproducibility, demonstrating the pitfalls of e-nose technology and therefore limit their utility for discriminating between samples. en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.subject Electronic nose en_UK
dc.subject Temperature effect en_UK
dc.subject Headspace en_UK
dc.subject Filter en_UK
dc.subject Sampling method en_UK
dc.title Methodological variation in headspace analysis of liquid samples using electronic nose en_UK
dc.type Article en_UK


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