3.2. Tin, Cu and Zinc Determination
The Sn, Cu and Zn concentrations found in the samples,
collected at the stations shown in Figure 1 and using the
sample preparation and analytical methods described
above, were 0.40 - 3.55 μg·g−1
Sn, 9.62 - 67.03 μg·g−1
Cu
and 87.13 - 731.51 μg·g−1
Zn. The metals distribution is
shown in Table 4.
3.2.1. Tin Determination
The concentration of Sn measured implies that traces of
old, organotin-based formulations may also have been
present. Indeed, the degradation of organotin compounds
occurs by biotic or abiotic processes, the transformation
is similar for both cases and leads via subsequent deal-kylation or dearylation to inorganic tin, as shown in
Scheme 1 [38].
Consequently, the SAA results showed that the highest
concentrations of Sn are respectively in the Beni Saf’s