References of "Focant, Jean-François"
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See detailAnalysis of Dioxins and Dioxin-like PCBs in Feed and Food
Faye, B; Focant, Jean-François ULiege

Scientific conference (2015, May)

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See detailInvestigation of Mainstream Tobacco Smoke Particulate Phase by HS-SPME-GC×GC-HRTOFMS
Lizak, Radoslaw ULiege; Huston-Fulmer, L; Binkley, J et al

Poster (2015, May)

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See detailAre Dechloranes a source of concern? Food control and dietary intake estimation
Calaprice, Chiara ULiege; L'Homme, B; Calvano, DC et al

Scientific conference (2015, May)

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See detailTrappist Beers Analysis, Exploring the Secrets of Monks
Focant, Jean-François ULiege; L'Homme, B; Allen, C et al

Conference (2015, May)

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See detailInvestigation of Mainstream Tobacco Smoke Particulate Phase by HS-SPME-GC×GC-HRTOFMS
Lizak, Radoslaw ULiege; Brokl, M; Wright, C et al

Scientific conference (2015, May)

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See detailFast Chromatographic Method for Explosive Profiling
Stefanuto, Pierre-Hugues ULiege; Perrault, Katelynn A.; Focant, Jean-François ULiege et al

in Chromatography (2015), 2

Security control is becoming a major global issue in strategic locations, such as airports, official buildings, and transit stations. The agencies responsible for public security need powerful and ... [more ▼]

Security control is becoming a major global issue in strategic locations, such as airports, official buildings, and transit stations. The agencies responsible for public security need powerful and sensitive tools to detect warfare agents and explosives. Volatile signature detection is one of the fastest and easiest ways to achieve this task. However, explosive chemicals have low volatility making their detection challenging. In this research, we developed and evaluated fast chromatographic methods to improve the characterization of volatile signatures from explosives samples. The headspace of explosives was sampled with solid phase micro-extraction fiber (SPME). Following this step, classical gas chromatography (GC) and comprehensive two-dimensional GC (GC×GC) were used for analysis. A fast GC approach allows the elution temperature of each analyte to be decreased, resulting in decreased thermal degradation of sensitive compounds (e.g., nitro explosives). Using fast GC×GC, the limit of detection is further decreased based on the cryo-focusing effect of the modulator. Sampling of explosives and chromatographic separation were optimized, and the methods then applied to commercial explosives samples. Implementation of fast GC methods will be valuable in the future for defense and security forensics applications. [less ▲]

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See detailGCxGC-TOFMS and supervised multivariate approaches to study human cadaveric decomposition olfactive signatures
Stefanuto, Pierre-Hugues ULiege; Perrault, Katelynn A.; Stadler, Sonja et al

in Analytical Bioanalytical Chemistry (2015), 407(16), 4767-4778

In forensic thanato-chemistry, the understanding ofthe process of soft tissue decomposition is still limited. Abetter understanding of the decomposition process and thecharacterization of the associated ... [more ▼]

In forensic thanato-chemistry, the understanding ofthe process of soft tissue decomposition is still limited. Abetter understanding of the decomposition process and thecharacterization of the associated volatile organic compounds(VOC) can help to improve the training of victim recovery(VR) canines, which are used to search for trapped victimsin natural disasters or to locate corpses during criminal investigations.The complexity of matrices and the dynamic natureof this process require the use of comprehensive analyticalmethods for investigation. Moreover, the variability of theenvironment and between individuals creates additional difficultiesin terms of normalization. The resolution of the complexmixture of VOCs emitted by a decaying corpse can beimproved using comprehensive two-dimensional gas chromatography(GC× GC), compared to classical singledimensionalgas chromatography (1DGC). This study combinesthe analytical advantages of GC×GC coupled to timeof-flight mass spectrometry (TOFMS) with the data handlingrobustness of supervised multivariate statistics to investigatethe VOC profile of human remains during early stages ofdecomposition. Various supervised multivariate approachesare compared to interpret the large data set. Moreover, earlydecomposition stages of pig carcasses (typically used as humansurrogates in field studies) are also monitored to obtain adirect comparison of the two VOC profiles and estimate therobustness of this human decomposition analog model. In thisresearch, we demonstrate that pig and human decompositionprocesses can be described by the same trends for the majorcompounds produced during the early stages of soft tissuedecomposition. [less ▲]

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See detailINCREASE OF SENSITIVITY BY USING TIMED-CRYOGENIC ZONE COMPRESSION (t-CZC) APPLIED TO BDE-209 ON GC/HRMS
Mehlmann, H; Krumwiede, D; Focant, Jean-François ULiege

Conference (2015, April)

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See detailHow far are we in the chase after the lowest detectable level for Dioxins?
Focant, Jean-François ULiege; L'Homme, B; Calaprice, Chiara ULiege et al

Scientific conference (2015, April)

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See detailMeasurement of ultra-trace levels of Dechloranes in food and feed.Assessment of dietary intake.
Calaprice, Chiara ULiege; L'Homme, B; Focant, Jean-François ULiege

Scientific conference (2015, April)

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See detailGC×GC-TOFMS: A tool to demystify…
Focant, Jean-François ULiege

Conference (2015, April)

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See detailMeasurement of ultra-trace levels of Dechloranes in food and feed. Assessment of dietary intake
Calaprice, Chiara ULiege; L'Homme, Benjamin; Calvano, Cosima Damina et al

Conference (2015, April)

Detailed reference viewed: 16 (0 ULiège)
See detailDioxins in food, Challenges in Analysis
Focant, Jean-François ULiege

Scientific conference (2015, March 19)

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