References of "Focant, Jean-François"
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See detailPLE for extraction of dioxins in animal feed and ingredients
Focant, Jean-François ULg; Scholl, Georges ULg; De Pauw, Edwin ULg et al

in Organohalogen Compounds (2010, September), 72

Within the entire complex procedure required to measure dioxins and related compounds in biological matrices, the extraction step is often seen as a well controlled step. Although maybe true for many ... [more ▼]

Within the entire complex procedure required to measure dioxins and related compounds in biological matrices, the extraction step is often seen as a well controlled step. Although maybe true for many human and food-related matrices, the situation is very different for animal feed and feed ingredients. Specific European guidelines (e.g. Commission Directive 2006/13/EC, Commission Regulation (EC) No 152/2009) exist for animal feed but only list general requirements for the various stages of the procedure. The liberty is left to laboratories to select, for example, the tools used for the extraction steps. This has the advantage to allow ‘in-house’ methods to be used, as long as they satisfy with all the requirements of the EU Regulation. In that context, it is foreseen that the European Committee for Standardization (CEN) will soon propose a standard for the determination of PCDD/Fs and PCBs in animal feed that would be the reference method to be used to solve potential issues in case of dispute over results reported from different laboratories. A major point of concern is that it has been reported earlier1 that most commonly accepted extraction procedure can conduct to significantly different results for the extraction of dioxins and related compounds in feed and feed additives such as mineral clays and various oxides. Several non-instrumental and instrumental automated approaches are available for extraction. Soxhlet extractors have long been the most used tools for non-instrumental extraction of solids. They have proven to be very efficient but some limitations encouraged the development of other approaches based on instrumental techniques. For feed extraction, pressurized liquid extraction (PLE) (also branded as accelerated solvent extraction ASE®) is the technique of choice for high sample throughput. This study reports on the investigation of the use of various solvent mixtures, extraction temperatures, and instruments (parallel PLE, sequential ASE®) for the extraction of 17 PCDD/Fs and 12 dioxin-like PCBs in mineral clay, bovine feed, fish meal, and in-house quality control animal compound feed. [less ▲]

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See detailThe smell of death - a new method to detect buried remains: GCxGC-TOFMS
Dekeirsschieter, Jessica ULg; Brasseur, Catherine ULg; De Koning, Sjaak et al

Conference (2010, September)

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See detailTotal Solution for Rapid Sample Preparation
Focant, Jean-François ULg

Conference (2010, July)

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See detailA ‘cook book’ method for dioxin & PCBs analysis
Focant, Jean-François ULg; Shirkhan; Patterson Jr

Poster (2010, June)

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See detailInvestigations of the GCxGC-HRMS coupling
Focant, Jean-François ULg; Patterson Jr

Conference (2010, June)

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See detailSome Analytical Aspects of GCxGC-(ID)MS
Focant, Jean-François ULg

Scientific conference (2010, May)

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See detailNew and old contaminants in the River Meuse catchment
Geraerts; Belpaire; Focant, Jean-François ULg et al

Conference (2010, April)

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See detailAnalytical Aspects of POPs
Focant, Jean-François ULg

Conference (2010, April)

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See detailAqueous Sample Preparation by FMS
Focant, Jean-François ULg

Scientific conference (2010, April)

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See detailCryogenic Zone Compression for the Measurement of Dioxins
Focant, Jean-François ULg; Patterson Jr

Scientific conference (2010, April)

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See detailPLE for Extraction of Dioxins in Animal Feed and Ingredients
Focant, Jean-François ULg

Scientific conference (2010, April)

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See detailRecent Biomonitoring Data for POP Studies in food and human
Focant, Jean-François ULg

Scientific conference (2010, March)

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See detailSome Analytical Aspects of Comprehensive Two-Dimensional GC (GCxGC) MS
Focant, Jean-François ULg

Scientific conference (2010, February)

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See detailGCXGC coupled to fast scanning quadrupole MS for trace analysis of POPs
Kinet; De Pauw, Edwin ULg; Focant, Jean-François ULg

in Book of abstracts (2010, January)

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See detailA ‘cook book’ method for dioxin analysis
Focant, Jean-François ULg; Shirkhan; Patterson Jr

in Book of abstract (2010, January)

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See detailDietary intake of PCDD/Fs and dioxin-like PCBs of the Belgian Population
Windal, Isabelle; Vandevijvere, S.; Maleki, M. et al

in Chemosphere (2010), 79

The World Health Organization recommends assessing human exposure to contaminants on a regular basis. In order to assess the current dietary exposure of the Belgian adult population to PCDD/Fs and dioxin ... [more ▼]

The World Health Organization recommends assessing human exposure to contaminants on a regular basis. In order to assess the current dietary exposure of the Belgian adult population to PCDD/Fs and dioxin-like PCBs and to update exposure estimates of 2000–2001, a total diet study was designed. The mean dietary intake of PCDD/Fs and dioxin-like PCBs in the Belgian adult population in 2008 was estimated to be 0.72 pg TEQ kgbw-1 d-1 (middle bound concentrations, TEF of 1998) based on occurrence data of 2008 and national food consumption data of 2004. This value is clearly below the Tolerable Weekly Intake (TWI) of 14 pg TEQ kgbw-1 week-1 set by the Scientific Committee on Food of the European Commission and below the provisional tolerable monthly intake of 70 pg TEQ kgbw-1 month-1 set by the Joint FAO/WHO Expert Committee on Food Additives. Considering the cumulative distribution, the intake was less than 1 pg TEQ kgbw-1 d-1 for more than 80% of the population, and less than 2 pg TEQ kgbw-1 d-1 for the entire population. When using the 2005 TEF instead of the 1998 TEF, the mean dietary intake in the Belgian adult population was estimated to be 0.61 pg TEQ kgbw-1 d-1. [less ▲]

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See detailScreening for Organohalogen Compounds in Human Blood Plasma Using GCxGC-TOFMS and Scripting.
Brasseur, Catherine ULg; Hilton; Focant, Jean-François ULg et al

Scientific conference (2009, December)

Detailed reference viewed: 20 (6 ULg)