Determination of Aromatic Amines in Play-clay by Solid Phase Extraction and Gas Chromatography-Mass Spectrometry
A method for the determination of nine aromatic amines in play-clay by solid phase extraction and gas chromatography-mass spectrometry was developed.The samples were extracted twice by ultrasonic extraction by methanol,the extract was evaporated,and then concentrated solution with the reducing agent reacted 30 min at 70 ℃.After extraction using Oasis HLB SPE column,the aromatic amines were collected and analyzed by gas chromatography-mass spectrometry.The nine primary aromatic amines can be separated and determined successfully by this method.Under the optimized conditions,the respective detection limits were 5 mg/kg,the spiked recoveries of samples were in the range of 70%-110%.The method is accurate,rapid and high sensitive.It can be applied to analyze the primary aromatic amine of real play-clay samples.