Divinylbenzene samplers as surrogate tool for biological monitoring of (micro)pollutants in the marine environment
Huysman, S.; Vanryckeghem, F.; Smedes, F.; Van Langenhove, H.; Demeestere, F.; Vanhaecke, L. (2018). Divinylbenzene samplers as surrogate tool for biological monitoring of (micro)pollutants in the marine environment, in: ASSET 2018 summit on on Global Food Inegrity, 28-31 May 2018, Belfast, Ireland: Abstracts.
In: (2018). ASSET 2018 summit on on Global Food Inegrity, 28-31 May 2018, Belfast, Ireland: Abstracts. Queen's University Belfast: Belfast.
A plethora of indicators have been used as monitoring tools to evaluate the impact of emerging contaminants on human and ocean health. Nevertheless, the analysis of bio-indicators results in some disadvantages, i.e. lack of cost-efficiency, labor intensive and depending on the metabolization of the organism. Therefore, this study presents a novel surrogate-biomonitoring technique, based on a divinylbenzene (DVB) sorbent, for mimicking the bioaccumulation of aquatic organisms. Static exposure designs were used for investigating the kinetic parameters of 186 emerging contaminants (i.e. 28 pesticides, 7 personal care products, 52 pharmaceuticals, 70 hormones and 27 plasticizers). The latter were successfully calculated and validated by a model that was used for evaluating the bioaccumulation (Greenwood et al, 2007). During the validation, the models displayed significant (p<0.05) non-linear correlations, which resulted in the determination of kinetic and equilibrium parameters. The uptake rates and partition water coefficients ranged respectively between 5 to 40 L.d-1 and 5 to 10. Additionally, the DVB was extensively calibrated for using this novel technique as a quantitative surrogate of aquatic organisms. Finally as a proof of principle, DVB samplers were directly applied in marine waters and accumulated a broad polarity range of compounds (Log P from 2 to 10). Moreover, the uptake rates obtained by the laboratory pseudo-static exposure design were 100-fold lower than the field due to the enclosing glass fiber of the DVB. In conclusion, this unique technique lead to quantify the risk of emerging contaminants that can be accumulated by aquatic organisms.
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