Application of Novel Activated Carbon Fiber Solid‐Phase Microextraction to Analysis of Chlorohydrocarbons in Water

Abstract

Activated carbon fiber (ACF) used as an extraction fiber in solid‐phase microextraction (SPME) procedure has been investigated. By coupling with gas chromatography‐mass spectrometry (GC‐MS), ACF‐SPME has shown to be suitable for the determination of chlorohydrocarbons in water with headspace. The optimal phosphoric acid concentration in preparing ACF is found to be 30% since higher phosphoric acid concentration leads to the degeneration of the peak shape. An optimized method with acceptable linearity and a relative standard (RSD) value less than 10% for each compound has been established based on extensive parametric experiments such as the effects of adsorption time, the impact of desorption conditions, etc. Due to the excellent adsorption efficiency compared to other available commercial fibers, ACF has been recommended as a great alternative fiber for SPME procedure.

Keywords:

• Solid‐phase microextraction
• Activated carbon fiber
• Phosphoric acid concentration
• Fiber activating
• Chlorohydrocarbons
• HS‐GC‐MS

Acknowledgments

We acknowledge the financial support for the research from the National Science and Technology Council of P.R. China (96‐A23‐01‐07) and the National High Technology Research and Development Project (2002AA649030).