Abstract:

A gas Chromatography method was developed for the determination of tributyltin and triphenyltin in water. The samples were extracted by hexane, derivatived by NaBEt4 and determined by gas chromatography-flame photometric detection (GC-FPD). This method showed good linearity within the range of 0.5－10.0 mg/L and the correlation coefficient R2 were 0.9967 and 0.9982 for tributyltin and triphenyltin, respectively. In the two spiked level of 10 mg/L and 50 mg/L, the average recovery was 72.56%－119.9% and RSD was 3.724%－14.52%. The detection limit of tributyltin and triphenyltin were 0.0601, 0.1308 mg/L, respectively. The method was simple and feasible for the determination of organotin compounds in tap water with satisfactory results.

Key words: tributyltin, triphenyltin, gas chromatography flame photometric detector, water sample