Abstract
ABSTRACTAn analytical gas chromatography-mass spectrometry (GC-MS) method was investigated for the determination of trace butyltin compounds (BTs) (tributyltin [TBT] and its derivatives dibutyltin [DBT] and monobutyltin [MBT]) in seawater collected from some west Algerian harbors. BTs were detected in all samples from all investigated sites. Levels of total BT concentrations detected in seawater ranged from 0.045 to 0.798 μg Sn L−1. Higher concentrations of BTs were found in seawater collected from Bethioua (0.798 μg Sn L−1), an oil terminal, and Mers El Kébir shipyard (0,585 μg Sn L−1). This suggested that maritime activities close to the harbors play a major role as the source of BTs. Indeed, the harbor of Bethioua is frequented by many tankers. TBT was the predominant compound in seawater collected from almost all the sampling locations, indicating the fresh input of TBT in the harbors.
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