References of "Goeyens, Léo"
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See detailA review of dietary and non-dietary exposure to bisphenol-A.
Geens, Tinne; Aerts, Dominique; Berthot, Carl et al

in Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association (2012), 50(10), 3725-40

Due to the large number of applications of bisphenol-A (BPA), the human exposure routes are multiple. We aimed to review shortly the food and non-food sources of BPA, and to evaluate their contribution to ... [more ▼]

Due to the large number of applications of bisphenol-A (BPA), the human exposure routes are multiple. We aimed to review shortly the food and non-food sources of BPA, and to evaluate their contribution to the human exposure. Food sources discussed here include epoxy resins, polycarbonate and other applications, such as paperboard and polyvinylchloride materials. Among the non-food sources, exposures through dust, thermal paper, dental materials, and medical devices were summarized. Based on the available data for these exposure sources, it was concluded that the exposure to BPA from non-food sources is generally lower than that from exposure from food by at least one order of magnitude for most studied subgroups. The use of urinary concentrations from biomonitoring studies was evaluated and the back-calculation of BPA intake seems reliable for the overall exposure assessment. In general, the total exposure to BPA is several orders of magnitude lower than the current tolerable daily intake of 50 mug/kg bw/day. Finally, the paper concludes with some critical remarks and recommendations on future human exposure studies to BPA. [less ▲]

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See detailPotential Impact of Fertilization Practices on Human Dietary Intake of Dioxins in Belgium
Dumortier, Pierre ULg; Elskens, Marc; Focant, Jean-François ULg et al

in Science of the Total Environment (2012), 423

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See detailEvaluation of the use of CALUX-results for dioxins and dioxin-like PCBs analysis for quantitative human exposure assessments
Vromman, Valérie; Baert, Katleen; Vanderperren, Huig et al

in Food Control (2012), 27(2), 314-321

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See detailREVISED EU-CRITERIA FOR APPLYING BIOANALYTICAL METHODS FOR SCREENING OF FEED AND FOOD FOR DIOXINS AND DIOXIN-LIKE PCBS.
Hoogenboom, LAP; Hadrich, Johan; Eppe, Gauthier ULg et al

in Organohalogen Compounds (2010), 72

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See detailAssessment of the chemical contamination in home-produced eggs in Belgium: General overview of the CONTEGG study
Van Overmeire, Ilse; Pussemier, Luc; Wageneers, Nadia et al

in Science of the Total Environment (2009), 407(15), 4403-4410

This overview paper describes a study conducted for the Belgian Federal Public Service of Health, Food Chain Safety and Environment during 2006–2007. Home-produced eggs from Belgian private owners of hens ... [more ▼]

This overview paper describes a study conducted for the Belgian Federal Public Service of Health, Food Chain Safety and Environment during 2006–2007. Home-produced eggs from Belgian private owners of hens were included in a large study aiming to determine concentration levels of various environmental contaminants. Bymeans of the analyses of soil samples and of kitchen waste samples, obtained from the same locations, an investigation towards the possible sources of contaminants was possible. Eggs, soils, faeces and kitchen waste samples were checked for the presence of dioxins, PCBs (including dioxin-like PCBs), organochlorine pesticides, trace elements, PAHs, brominated flame retardants and mycotoxins. The study design, sampling methodology and primary conclusions of the study are given. It was found that in some cases dioxin-like compounds were present at levels that are of concern for the health of the egg consumers. Therefore, measures to limit their contamination in eggs, produced by hens of private owners, were proposed and deserve further attentio [less ▲]

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See detailANALYSIS OF DIOXINS AND DIOXIN-LIKE PCBS IN HOME PRODUCED EGGS: LEVELS AND SOURCES
Van Overmeire, Ilse; Eppe, Gauthier ULg; Waegeneers, Nadia et al

in Organohalogen Compounds (2008)

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See detailINTAKE OF DIOXINS AND DIOXIN-LIKE PCBs CONSUMING HOME PRODUCED VERSUS COMMERCIAL EGGS
Sioen, Isabelle; Bilau, Maaike; Van Overmeire, Ilse et al

in Organohalogen Compounds (2008)

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See detailValidation and interpretation of CALUX as a tool for the estimation of dioxin-like activity in marine biological matrixes.
Windal, Isabelle; Van Wouwe, Nathalie; Eppe, Gauthier ULg et al

in Environmental Science & Technology (2005), 39(6), 1741-1748

Among the different analytical tools proposed as an alternative to the very expensive gas chromatography high-resolution mass spectrometry (GC-HRMS) analyses of polychlorodibenzo-p-dioxin and ... [more ▼]

Among the different analytical tools proposed as an alternative to the very expensive gas chromatography high-resolution mass spectrometry (GC-HRMS) analyses of polychlorodibenzo-p-dioxin and polychlorodibenzofurans, Chemically Activated LUciferase gene eXpression (CALUX) in vitro cell bioassay is very promising. It allows the analyses of a high number of samples since it is relatively fast, inexpensive, and sensitive. However, this technique is not yet widely applied for screening or environmental monitoring. The main reasons are probably the lack of validation and the difficulty in interpreting the global biological response of the bioassay. In this paper, the strict quality control criteria set up for the validation of CALUX are described. The validation has shown good repeatability (relative standard deviation (RSD) = 9%) and good within-lab reproducibility (RSD = 15%) of the results. The quantification limit, in the conditions applied in this paper, is 1.25 pg CALUX-TEQ/g fat. Comparison of CALUX and GC-HRMS analysis was made for various marine matrixes (fishes, mussels, starfishes, sea birds, and marine mammals). Good correlations are usually observed, but there are systematic differences between the results. Attempts are made to identify the origin of the discrepancy between the two methods. [less ▲]

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See detailRemoval of PCDD/Fs and DL-PCBs from fish oil by activated carbon: Compliance with European Legislation
Eppe, Gauthier ULg; Carbonnelle, Sophie; Hellebosch, Laeticia et al

in Organohalogen Compounds (2005), 67

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See detailComparison of the rat and mouse cell lines commercially available for CALUX bioassays
Goeyens, Leo; Windal, Isabelle; Scippo, Marie-Louise ULg et al

in Organohalogen compounds (2004), 66

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See detailValidation and discussion of CALUX analysis for marine samples
Windal, Isabelle; Van Wouwe, Nathalie; Carbonnelle, Sophie et al

in Organohalogen Compounds (2003)

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See detailSelective adsorption of dioxins and PCBs from marine oils on activated carbon
De Meulenaer, Bruno; Maes, Jeroen; Van Heerswynghels, Peter et al

in Organohalogen Compounds (2003)

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See detailAnalysis of PCDD/Fs in human blood plasma using CALUX bioassay and GC-HRMS: a comparison
Van Wouwe, Nathalie; Eppe, Gauthier ULg; Xhrouet, Céline ULg et al

in Organohalogen Compounds (2003)

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See detailNutrient depletions in the Ross Sea and their relation with pigment stocks
Goeyens, Leo; Elskens, Marc; Catalano, Giulio et al

in Journal of Marine Systems (2000), 27

The present article depicts a first attempt to relate the governing nutrient uptake regime and phytopigment signature of the Ross Sea. Based on nutrient and phytopigment data obtained during two cruises ... [more ▼]

The present article depicts a first attempt to relate the governing nutrient uptake regime and phytopigment signature of the Ross Sea. Based on nutrient and phytopigment data obtained during two cruises in the Ross Sea, two distinct groups were recognised. The first one was characterised by moderate nutrient nitrate and silicic acid depletions in combination with relatively high diatom and Phaeocystis abundance. The second group showed very low nutrient depletions and very poor diatom abundance. Average depth specific nitrate depletions were 8.1 and 1.1 μM and average silicic acid depletions were 21.5 and 1.3 μM, respectively. The nutrient consumption patterns did not match the conditions of silicic acid excess (SEA) or nitrate excess areas (NEA), a clear trend being probably obscured by very poor seasonal maturity of several sampling stations. The contrast between both groups is largely explained by small differences in nitrogen uptake regime of the major phytoplankters. During early season, the diatoms meet the majority of their nitrogen requirements by nitrate uptake, with few exceptions where ammonium is the most important nitrogenous substrate. On average, their nitrate uptake capacity is lower than that of Phaeocystis (average specific nitrate uptake rates were 0.021 and 0.036 day y-1 for diatoms and Phaeocystis, respectively). The latter phytoplankton always shows predominance of nitrate uptake. Both groups are subject to inhibition of nitrate uptake when ammonium availability increases, and it is likely that the diatoms are more sensitive to the inhibitory effect of ammonium. [less ▲]

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See detailBiogeochemical Studies conducted in the OMEX Area during the BELGICA cruises: Preliminary Results
Chou, Lei; Loijens, Michèle; Paucot, Hugues et al

Poster (1994, October)

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See detailPrimary production and nutrient fluxes in the Gulf of Biscay.
Elskens, Marc; Chou, Lei; Dauby, Patrick ULg et al

in Progress in Belgian Oceanographic Research (1993)

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