Concentrations of As, Cu, Fe, Hg, Pb and Zn and activity concentrations from
234,238U and 210
Po in water, fillet, liver and gills were determined in three stocked fish
species from the Luis L. Leon reservoir, located in Northern Mexico. The considered
species were Lepomis cyanellus, Cyprinus carpio and Ictalurus furcatus.
238U and 234U
activity concentration (AC) in fillet samples showed values of 0.007–0.014 and
0.01–0.02 Bq∙kg−1 wet weight (ww), respectively. Liver samples for L. cyanellus, C. carpio
and I. furcatus present 210
Po AC of 1.16–3.26, 0.70–1.13 and 0.93–1.37 Bq∙kg−1
ww.
Arsenic, mercury and lead concentration intervals in fillet samples were 0.13–0.39,
0.005–0.126 and 0.009–0.08 mg∙kg−1 ww, respectively, while in gill samples they were
0.11–0.43, 0.002–0.039 and 0.02–0.26 mg∙kg−1 ww. The elemental Bioaccumulation Factor
(BAF) for fish tissues with respect to their concentrations in water was determined. L.
cyanellus showed the highest BAF values for As and total U, being BAFAs = 37 and
40 L∙kg−1 in fillet and gills, respectively, and BAFU total = 1.5 L∙kg−1
in fillet. I. furcatus
showed the highest BAF values for Hg and Pb, being BAFHg = 40 and 13 L∙kg−1
in fille
