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- W2893142359 abstract "It has been suggested that open pit mining and upgrading of bitumen in northern Alberta releases Tl and other potentially toxic elements to the Athabasca River and its watershed. We examined Tl and other trace elements in otoliths of Trout-perch (Percopsis omiscomaycus), a non-migratory fish species, collected along the Athabasca River. Otoliths were analyzed using ICP-QMS, following acid digestion, in the metal-free, ultraclean SWAMP laboratory. Compared to their average abundance in the dissolved (<0.45 μm) fraction of Athabasca River, Tl showed the greatest enrichment in otoliths of any of the trace elements, with enrichments decreasing in the order Tl, Sr, Mn, Zn, Ba, Th, Ni, Rb, Fe, Al, Cr, Ni, Cu, Pb, Co, Li, Y, V, and Mo. Normalizing Tl in the otoliths to the concentrations of lithophile elements such as Li, Rb, Al or Y in the same tissue reveals average enrichments of 177, 22, 19 and 190 times, respectively, relative to the corresponding ratios in the water. None of the element concentrations (Tl, Li, Rb, Al, Y) or ratios were significantly greater downstream of industry compared to upstream. This natural bioaccumulation of Tl most likely reflects the similarity in geochemical and biological properties of Tl+ and K+. Thallium is enriched in fish otoliths, relative to the chemical composition of the river, to the same degree both upstream and downstream of industry." @default.
- W2893142359 created "2018-10-05" @default.
- W2893142359 creator A5020969470 @default.
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- W2893142359 creator A5052520162 @default.
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- W2893142359 creator A5078258471 @default.
- W2893142359 creator A5085415122 @default.
- W2893142359 creator A5088609862 @default.
- W2893142359 date "2019-02-01" @default.
- W2893142359 modified "2023-09-27" @default.
- W2893142359 title "Bioaccumulation of Tl in otoliths of Trout-perch (Percopsis omiscomaycus) from the Athabasca River, upstream and downstream of bitumen mining and upgrading" @default.
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- W2893142359 doi "https://doi.org/10.1016/j.scitotenv.2018.09.318" @default.
- W2893142359 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30373047" @default.
- W2893142359 hasPublicationYear "2019" @default.
- W2893142359 type Work @default.