Determination of bisphenol A migrated from polyvinyl chloride hoses by GC/MS

Bisphenol A migration from polyvinyl chloride (PVC)hose to water was quanti fied. Pure water was poured into nine bent PVC hoses and then retained for 24 hours at room temperature. The water samples were extracted with dichlor omethane. The extracts were concentrated and derivatized with N,O-bis (trim ethylsilyl) trifluoroacetamide. The derivatized samples were determined by GC/MS. Bisphenol A was detected from all samples. The migration levels of b isphenol A from PVC hoses ranged from 4.0 to 1730 mu g/l. The detection lim it was 0.03 mu g/l. These migration levels were much higher than the migrat ion levels from polycarbonate foodstuffs. To confirm the relation between t he migration period and the levels, migration tests in which the migration period was changed from 0 to 24 hours were carried out. The migration level of bisphenol A rose from 8.7 to 558 mu g/l with the migration period. Sinc e the water which passed through a PVC hose was contaminated with bisphenol A at ppb level, PVC hose might be a significant source of environmental bi sphenol A.