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EC number: 239-622-4
CAS number: 15571-58-1
study procedure described in Bouwman, 2010, report was based on the OECD
guideline No. 305, 1996.
final target concentrations were 0.25 and 2.5 µg/l (based on water
solubility and detection limits of the analytical methods used). The
uptake phase lasted for 30 days, during which samples were taken from
the test medium and from the fish.
were based on both dioctyltin (DOT) and monooctyltin (MOT). Results were
based on DOT, due to the fact
that MOT-concentrations were below the Limit Of Quantification (LOQ) for the
target concentration of 0.25 µg/I. The mean concentrations of DOT were
0.19 ± 0.048 µg/l and 2.6
of the concentrations of both DOT and MOT in fish tissues during the
30-day uptake phase showed
measured concentrations that were always below the Limit of
the concentrations of both DOT and MOT in fish were constantly below the
LOQ during the
uptake phase, a depuration phase was not considered to be significant.
Therefore, the bioconcentration test was terminated after 30 days of
exposure. In addition to the analytical work already performed on tin
species, fish samples taken after 30 days of exposure were analysed on
mean BCF-values based on dioctyltin at target concentrations of 0.25 and
2.5 µg/I were1294 and
99, respectively. The mean BCF-values based on total tin at target
concentrations of 0.25
and 2.5 µg/I were 178 and 58, respectively.
high value found at the target concentration of 0.25 µg/I was in fact
due to the analytical methodology
limit, which could not be further improved. Nevertheless, total tin
analysis supports the fact that tin species do not bioaccumulate in fish
on the result found for the highest target concentration of 2.5 µg/I,
the BCF is at leastless
than 100 and therefore the substance does not bioconcentrate.
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