Study of the comparative dynamics of the incorporation of tissue free-water tritium (TFWT) in bulrushes (Typha latifolia) and carp (Cyprinus carpio) in the Almaraz nuclear power plant cooling reservoir

Modifying action of tritium on the charophytes bioelectrical response to anthropogenic pollution

“…Moreover, an observed modifying phenomenon occurred due to the action of HTO of very low activity concentration providing ~ 0.05 i^Gyxh"' dose rate of external exposure, which is much lower than the recently proposed dose rate value of 10 |iGyxh ' as a Predicted-No-Effect Value for freshwater ecosystems [15,16]. As might have been expected, we determined that at neutral pH Al alone did not significantly affect chloride and potassium transport systems involved in electrical excitation of PM.…”

Induction of reactive oxygen species and algal growth inhibition by tritiated water with or without copper

“…In this study, we showed that exposure of Chlamydomonas reinhardtii to HTO caused both a significant reduction in the maximal biomass (−23% after 96 h) and a delay in the time needed to reach 50% of maximum cell density. These effects were observed at high exposure activities (up to 59 MBq mL −1 ), whereas environmentally relevant levels in surface freshwater ranges from 0.053 to 0.43 Bq mL −1 (Baeza et al, 2009). However, such high HTO activities could be encountered locally downstream of Nuclear Power Plants (0.001–0.004 MBq mL −1 —Pierrard, 2008), prior to the homogeneous dilution of authorized liquid releases in the rivers (typical liquid radioactive releases by French nuclear facilities under normal operating conditions are about 10 13 Bq per year—Garnier‐Laplace et al, 2009).…”

“…For example, a field study performed before and during operation of the Temelín NPP (Bohemia), showed that 3 H was the only radionuclide which impacted the hydrosphere (Hanslík et al, 2009), at an activity of 0.013 Bq mL −1 in the river. Another study showed that environmental tritium activities reached 0.053–0.43 Bq mL −1 downstream of the Arrocampo NPP reservoir (Spain; Baeza et al, 2009).…”

Tritium uptake in rainbow trout (Oncorhynchus mykiss): HTO and OBT-spiked feed exposures simultaneously

“…There are no temporal and seasonal parameters. For example, Baeza et al (2009) reported that the tritium activity levels in the surface water of the Arrocampo Nuclear Power Plant (NPP) were found to range between 53 and 433 Bq/L, while the mean tritium activity in the carp (Cyprinus carpio) was between 41 and 216 Bq/L in the same period. In the case of carp muscle, the mean bio-concentration factor was 0.8, with a range of 0.44-1.78.…”