[Determination of dibutyltin compounds in polyvinyl chloride resin by capillary gas chromatography].
Dibutyltin compounds (DBTC) in polyvinyl chloride resin (PVC) were examined by capillary gas chromatography using a flame photometric detector (FPD). DBTC was extracted with a carbon tetrachloride-methanol (2:1) mixture under reflux. The extract was mixed with a hydrobromic acid solution. Dibutyltin dibromide was converted to dibutyldipentyltin (DBDPeT) by the Grignard reaction with pentylmagnessium bromide and then subjected to gas chromatography. A linear correlation between the amount of tin and peak height was observed in the range of 7.8 to 250 pg of tin on log-log paper. Recoveries of DBTC added to PVC were 92.6-108.1%. The results show that this procedure is more useful and sensitive (the detection limit is 3-4 pg, as tin) than previous methods reported.
Ohhira
S
S
Matsui
H
H
D002849:Chromatography, Gas / Q000379:methods; D009947:Organotin Compounds / Q000032:analysis*; D011143:Polyvinyl Chloride / Q000032:analysis*; D011145:Polyvinyls / Q000032:analysis*; D012117:Resins, Synthetic / Q000032:analysis*
D009947:Organotin Compounds; D011145:Polyvinyls; D012117:Resins, Synthetic; D011143:Polyvinyl Chloride; C020735:dibutyldichlorotin; C010409:dibutyltin dilaurate