A sol-gel based solid phase microextraction fiber for the analysis of aliphatic alcohols in apple juices

作者：Farhadi Khalil^*; Maleki Ramin; Tahmasebi Raheleh

来源：Journal of Separation Science, 2010, 33(1): 88-92.

DOI：10.1002/jssc.200900472

• Aliphatic alcohols
• Apple juice
• GC
• Headspace solid phase microextraction
• Sol-gel fiber coating

A new fiber based on titania-chitin sol-gel coated on a silver wire for the headspace solid phase microextraction of aliphatic alcohols from apple juice samples was developed. The influences of fiber coating composition and microextraction conditions (extraction temperature, extraction time, and ionic strength of the sample matrix) on the fiber performance were investigated. Also, the influence of temperature and time on desorption of analytes from fiber were studied. Under the optimized conditions, a porous fiber with a high extraction capacity and good thermal stability (up to 250 degrees C) was obtained. The proposed headspace solid-phase microextraction-GC method was successfully used for the analysis of aliphatic alcohols in apple juice and concentrate samples. The recovery values were from 92.8 to 98.6%. The RSD (n = 5) for all analytes were below 7.8%.

• 出版日期2010-1