Gb. Jiang et al., Dioctyltin and tributyltin detection at trace levels in water and beverages by capillary gas chromatography with flame photometric detection, FRESEN J AN, 363(3), 1999, pp. 256-260
A simple chromatographic procedure has been developed for the sensitive det
ermination of dioctyltin and tributyltin compounds in water and beverages.
Dioctyltin and tributyltin react with NaBH4 at pH 5 to produce volatile hyd
rides which can be quantitatively extracted into CH2Cl2. The corresponding
dioctyltin hydride derivative is identified by HPLC-ES-MS and measured by f
lame photometric detection using the quartz surface-induced tin emission. D
etection limits of less than 0.7 pg of tributyltin and 10 pg of dioctyltin
were achieved. Results showed that up to 9.5 ng/mL levels of dioctyltin wer
e present in beverages.