Contamination of Organotin Compounds in Coastal Water of Southern Thailand

摘要

In this study, the determination of concentration of butyltin compounds (BTs), namely tributyltin (TBT), dibutyltin (DBT), and monobutyltin (MBT) were determined in surface sediment samples collected from 9 major fishery ports along the coastal area of Songkla, Pattani and Narathiwat province, southernmost of Thailand. Sampling was carried out during the year 2011-2012 and analyzed the above compounds for their possible sources and distribution in this area. The analytical results showed that TBT was commonly detected as a major pollutant at higher concentration levels than either DBT or MBT. Overall, sediment samples collected from Pattani and Songkla sampling locations were more polluted with TBT at higher concentrations than other locations. Pattani sampling locations were found to have the highest pollution level of total BTs, especially TBT detected as the major pollutant ranging from 56.92 % to 64.63 %. These findings showed that the degradation rate of TBT to the breakdown product of DBT and MBT was going on at very slow, which may associate with several parameters in the study area.