Study on Detection Methods of Alkylphenols in Plastics for Footwear Productions.

A method for determination of alkylphenols in the plastics for footwear productions was developed by gas chromatography mass spectrometry. The samples were obtained from ultrasonic extraction, and the extraction solvent, temperature and time were optimized. After purified with a membrane filter, the extracts were quantitatively determined by a GC-MS method, and then their quantification was performed by an external standard method. The calibration curves of alkylphenols were linear in the range of 0. 1~10 mg/L with correlation coefficients (r²) more than 0. 995. The detection limit was in the range of 0. 3~1. 1 mg/kg. The spiked average recoveries varied from 80. 7 % to 113. 3 % at three spiked levels with the relative standard deviations (n=6) of 1. 3 %~8. 6 %. The method developed by this work was simple, rapid, accurate, stable, and reproducible for determination of alkylphenols in the plastics for footwear productions. [ABSTRACT FROM AUTHOR]