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PASSIVE SAMPLERS VS SENTINEL ORGANISMS: ONE-YEAR MONITORING OF PRIORITY AND EMERGING CONTAMINANTS IN COASTAL WATERS
Pintado-Herrera, M.G., I.J. Allan, E. Gonzalez-Mazo, and P.A. Lara-Martin.
Environmental Science & Technology 54(11):6693-6702(2020)
Silicone rubber passive samplers and caged Ruditapes philippinarum were deployed together to examine the suitability of these methods for determining spatial and temporal variability of priority and emerging contaminants in the Cadiz Bay in Spain. Seasonal trends observed for some compound classes were attributed to fluctuations in their sources or changes in the hydrodynamic conditions, respectively. Up to 42 out of 48 (in seawater) and 27 out of 37 (in biota) target analytes were detected. Conversely, spatiotemporal differences in the concentrations of target contaminants in clam tissues were minimal. Higher field bioaccumulation factors (log BAF>5) were found for priority substances. Silicone rubber passive samplers proved to be more sensitive than sentinel organisms for monitoring spatiotemporal changes in the dissolved aqueous concentrations of contaminants. In contrast, the latter allowed for a more realistic evaluation of the potential uptake and bioaccumulation of each compound.
Environmental Science & Technology 54(11):6693-6702(2020)
Silicone rubber passive samplers and caged Ruditapes philippinarum were deployed together to examine the suitability of these methods for determining spatial and temporal variability of priority and emerging contaminants in the Cadiz Bay in Spain. Seasonal trends observed for some compound classes were attributed to fluctuations in their sources or changes in the hydrodynamic conditions, respectively. Up to 42 out of 48 (in seawater) and 27 out of 37 (in biota) target analytes were detected. Conversely, spatiotemporal differences in the concentrations of target contaminants in clam tissues were minimal. Higher field bioaccumulation factors (log BAF>5) were found for priority substances. Silicone rubber passive samplers proved to be more sensitive than sentinel organisms for monitoring spatiotemporal changes in the dissolved aqueous concentrations of contaminants. In contrast, the latter allowed for a more realistic evaluation of the potential uptake and bioaccumulation of each compound.
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