3. Results and Discussion
3.1. Organotin Determination
Separation of the organotin compounds was performed
on a standard HP-5MS capillary column.
The sample chosen for the study of BTs identification
is that of the Beni Saf’s fishery, which is very frequented
by tankers. The different ions fragments of TBT and
DBT are given in Table 2, masses are calculated for the
120
Sn isotope. The most abundant ions appear in M-114
for the TBT and M-59 for the DBT, with a loss respect-
tively of two and one butyl fragments and the molecular
ion M+
appear at 292. Plzák et al. [23], obtained similar
results.
The abundance distributions of TBT and DBT in mus-
sel tissues, found in all sites and calculated from surfaces
of the peaks, using TeBT as standard, are shown in Ta-
ble 3. Results show well that all the analyzed sites are
contaminated by BTS.
Table 3 shows the existence of contamination of the
mussels by TBT practically in all sampled locations. The
profiles are marked by peaks of concentration with a very
clear preponderance of the TBT whose concentration
reaches a maximum for the site of Mers El Kebir (1896