32 research outputs found
Can seafood safety be compromised in the ocean of tomorrow?.
Autoria na publicação: FABIOLA FOGAĂA
Bioaccessibility of contaminants of emerging concern in raw and cooked commercial seafood species: insights for food safety risk assessment.
Autoria na publicação: FABIOLA FOGAĂA
Aandacht voor veiligheid
De komende decennia worden er tussen de 500.000 en 1.500.000 woningen gebouwd waarvan een groot deel in laag Nederland. Deze studie laat zien dat door deze woningen overstromingsbestendig te bouwen schadereductie mogelijk is. Het schaderisico wordt dan nog eens een factor 2 minder als naast een Business as Usual variant nieuwbouwwoningen worden opgehoogd tot +5 m NAP. De kosten van opgehoogde nieuwbouwhuizen zijn hoger en variĂ«ren tussen de 0,4 en 1.7 miljard euro/jaar, hetgeen overeenkomt met 0,1-0,5% van het BNP. Dijkversterking levert de hoogste reductie op in het schaderisico bij de gehanteerde scenarioâs. Gevolgbeperkende maatregelen in de ruimtelijk ordening als additionele oplossingsrichting zijn echter goed mogelijk als er ook een economische perspectief is bijvoorbeeld door middel van multifunctioneel ruimtegebruik
The ability of societies to adapt to twenty-first-century sea-level rise
Against the background of potentially substantial sea-level rise, one important question is to what extent are coastal societies able to adapt? This question is often answered in the negative by referring to sinking islands and submerged megacities. Although these risks are real, the picture is incomplete because it lacks consideration of adaptation. This Perspective explores societies' abilities to adapt to twenty-first-century sea-level rise by integrating perspectives from coastal engineering, economics, finance and social sciences, and provides a comparative analysis of a set of cases that vary in terms of technological limits, economic and financial barriers to adaptation and social conflicts
Strong Sorption of PCBs to Nanoplastics, Microplastics, Carbon Nanotubes, and Fullerenes
The presence of microplastic and
carbon-based nanoparticles in
the environment may have implications for the fate and effects of
traditional hydrophobic chemicals. Here we present parameters for
the sorption of 17 CB congeners to 10â180 ÎŒm sized polyethylene
(micro-PE), 70 nm polystyrene (nano-PS), multiwalled carbon nanotubes
(MWCNT), fullerene (C<sub>60</sub>), and a natural sediment in the
environmentally relevant 10<sup>â5</sup>â10<sup>â1</sup> ÎŒg L<sup>â1</sup> concentration range. Effects of salinity
and sediment organic matter fouling were assessed by measuring the
isotherms in fresh- and seawater, with and without sediment present.
Sorption to the âbulkâ sorbents sediment organic matter
(OM) and micro-PE occurred through linear hydrophobic partitioning
with OM and micro-PE having similar sorption affinity. Sorption to
MWCNT and nano-PS was nonlinear. PCB sorption to MWCNT and C<sub>60</sub> was 3â4 orders of magnitude stronger than to OM and micro-PE.
Sorption to nano-PS was 1â2 orders of magnitude stronger than
to micro-PE, which was attributed to the higher aromaticity and surfaceâvolume
ratio of nano-PS. Organic matter effects varied among sorbents, with
the largest OM fouling effect observed for the high surface sorbents
MWCNT and nano-PS. Salinity decreased sorption for sediment and MWCNT
but increased sorption for the polymers nano-PS and micro-PE. The
exceptionally strong sorption of (planar) PCBs to C<sub>60</sub>,
MWCNT, and nano-PS may imply increased hazards upon membrane transfer
of these particles
UV-filters and musk fragrances in seafood commercialized in Europe Union : occurrence, risk and exposure assessment
In the framework of the FP7 ECsafeSeafood project, 62 seafood samples commercialized in Europe Union from several representative species - mackerel, tuna, salmon, seabream, cod, monkfish, crab, shrimp, octopus, perch and plaice - were analysed for residues of 21 personal care products (PCPs), including 11 UV-filters (UV-Fs) and 10 musk fragrances (musks). PCPs analysis were performed by Quick, Easy, Cheap, Effective Rugged, Safe (QuEChERS), combined with liquid-liquid extraction (LLE) or dispersive solid-phase extraction (dSPE), followed by gas chromatography-tandem mass spectrometry (GC-MS/MS). The results showed the presence in a wide range of samples of nine out of eleven UV-Fs compounds analysed, namely 2-ethylhexyl salicylate (EHS), 2-ethylhexyl,4-methoxycinnamate (EHMC), 4-methylbenzylidenecamphor (4-MBC), benzophenone-1 (BP1), benzophenone-3 (BP3), isoamy1-4-methoxycinnamate (IMC), 2,2'-dihydroxy-4,4'-dimethoxybenzophenone (DHMB), homosalate (HS), and octocrylene (OC), whereas galaxolide (HHCB), galaxolide lactone (HHCB-lactone), and tonalide (AHTN) were the most found musks. The potential risks to human health associated with the exposure to eight of the more prevalent PCPs - EHS, EHMC, 4-MBC, BP1, BP3, IMC, HHCB, and AHTN- through seafood consumption were assessed for consumers from five European countries (Belgium, Ireland, Italy, Portugal and Spain). Results showed that the human exposure to UV-Fs and musks estimated from the concentration values found in seafood and the daily consumption of concerned seafood species, were far below toxicological reference values
Polluted porpoises: Generational transfer of organic contaminants in harbour porpoises from the southern North Sea
Persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs), polybrominated diphenylethers (PBDEs) and hexachlorobenzene (HCB), bioaccumulate in marine ecosystems. Top predators contain high levels of POPs in their lipid-rich tissues, which may result in adverse effects on their reproductive, immune and endocrine functions. Harbour porpoises (Phocoena phocoena) are among the smallest of cetaceans and live under high metabolic demand, making them particularly vulnerable to environmental pressures. Using samples from individuals of all maturity classes and sexes stranded along the southern North Sea (n = 121), we show the generational transfer of PCBs, PBDEs and HCB from adults to foetuses. Porpoise placentas contained 1.3-8.2 mg/kg lipid weight (lw) Sum-17PCB, 9 mg/kg lw). This was particularly true for adult males (92.3% >9 mg/kg lw), while adult females had relatively low PCB levels (10.5% >9 mg/kg lw) due to offloading. Nutritional stress led to higher offloading in the milk, causing a greater potential for toxicity in calves of nutritionally stressed females. No correlation between PCB concentration and parasite infestation was detected, although the probability of a porpoise dying due to infectious disease or debilitation increased with increasing PCB concentrations. Despite current regulations to reduce pollution, these results provide further evidence of potential health effects of POPs on harbour porpoises of the southern North Sea, which may consequently increase their susceptibility to other pressures