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| Dabrin, A.; Ghestem, J. -p.; Uher, E.; Gonzalez, Jean-louis; Allan, I. J.; Schintu, M.; Montero, N.; Balaam, J.; Peinerud, E.; Miege, C.; Coquery, M.. |
| Passive sampling devices (PS) are widely used for pollutant monitoring in water, but estimation of measurement uncertainties by PS has seldom been undertaken. The aim of this work was to identify key parameters governing PS measurements of metals and their dispersion. We report the results of an in situ intercomparison exercise on diffusive gradient in thin films (DGT) in surface waters. Interlaboratory uncertainties of time-weighted average (TWA) concentrations were satisfactory (from 28% to 112%) given the number of participating laboratories (10) and ultra-trace metal concentrations involved. Data dispersion of TWA concentrations was mainly explained by uncertainties generated during DGT handling and analytical procedure steps. We highlight that DGT... |
| Tipo: Text |
Palavras-chave: DGT; Uncertainty; Blank; Continental waters; Coastal waters. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00294/40560/39614.pdf |
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| Urien, N.; Farfarana, A.; Uher, E.; Fechner, Lise; Chaumot, A.; Geffard, O.; Lebrun, J. D.. |
| Kinetic parameters (uptake from solution and elimination rate constants) of Cu, Ni and Pb bioaccumulation were determined from two Gammarus pulex and three Gammarus fossrum wild populations collected from reference sites throughout France in order to assess the inter-species and the natural inter-population variability of metal bioaccumulation kinetics in that sentinel organism. For that, each population was independently exposed for seven days to either 2.5 mu g L-1 Cu (39.3 nM), 40 mu g L-1 Ni (681 nM) or 10 mu g L-1 Pb (48.3 nM) in laboratory controlled conditions, and then placed in unexposed microcosms for a 7-day depuration period. In the same way, the possible influence of metal exposure history on subsequent metal bioaccumulation kinetics was... |
| Tipo: Text |
Palavras-chave: Amphipods; Trace metals; Life history; Kinetic parameters; Inter-population variability. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00417/52840/54270.pdf |
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