[Determination of the migration of 16 PAHs from paper cups into food stimulants].

Objective: To study the variation of the residual polycyclic aromatic hydrocarbons (PAHs) from disposable paper cups into different food stimulants with time.

Methods: The disposable paper cups were soaked with water, 4% acetic acid, 20% ethanol and hexane respectively, and the 16 PAHs were extracted with CH2Cl2, and then determined by gas chromatography-mass spectrometry (GC-MS).

Results: The residual PAHs from disposable paper cups could be leached from the four stimulants, and the amounts increased with the increase of time. The mainly PAHs extracts were phenathrene, pyrene, naphthalene, anthracene and fluorene with lower molecular weight. Largest leaching ability of hexane was observed.

Conclusion: The supervision of disposable paper cups should be strengthened and it should be avoided using for prolonged immersion.