Publication
Title
Pathways and factors for food safety and food security at PFOS contaminated sites within a problem based learning approach
Author
Abstract
Perfluorooctanesulfonic acid (PFOS) and related substances have been listed in Annex B of the Stockholm Convention. The implementation requires inventories of use, stockpiles, and environmental contamination including contaminated sites and measures for (risk) reduction and phase out. In most countries monitoring capacity is not available and therefore other approaches for assessment of contaminated sites are needed. Available informations about PFOS contamination in hot spot areas and its bio-accumulation in the food webs have been merged to build up a worst-case scenario We model PFOS transfer from 1 to 100 ng L-1 range in water to extensive and free-range food producing animals, also via the spread of contaminated sludges on agriculture soils. The modeling indicates that forages represented 78% of the exposure in ruminants, while soil accounted for >80% in outdoor poultry/eggs and pigs. From the carry-over rates derived from literature, in pork liver, egg, and feral fish computed concentration falls at 101, 28 and 2.7 ng g(-1), respectively, under the 1 ng L-1 PFOS scenario. Assuming a major consumption of food produced from a contaminated area, advisories on egg and fish, supported by good agriculture/farming practices could abate 75% of the human food intake. Such advisories would allow people to become resilient in a PFOS contaminated area through an empowerment of the food choices, bringing the alimentary exposure toward the current Tolerable Daily Intake (TDI) of 150 ng kg(-1) body weight d(-1) proposed by the European Food Safety Authority (EFSA). (C) 2014 Elsevier Ltd. All rights reserved.
Language
English
Source (journal)
Chemosphere. - Oxford, 1972, currens
Publication
Oxford : Pergamon-elsevier science ltd, 2015
ISSN
0045-6535 [print]
1879-1298 [online]
Volume/pages
129(2015), p. 192-202
ISI
000353732600025
Full text (Publishers DOI)
Full text (publishers version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 11.06.2015
Last edited 22.04.2017
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