Importance of Thermal Parameters in Solid-Phase Micro-Extraction (SPME) Analysis

被引：0
|
作者：
S. Helle
S. Neunlist
P. Llopiz
A. C. Faust
S. Walter
机构：
[1] Laboratoire de Limnologie Organique,
[2] Laboratoire des Matériaux Minéraux,undefined
[3] Groupe Sécurité et Ecologie Chimiques,undefined
来源：
Journal of Thermal Analysis and Calorimetry | 1999年 / 56卷
关键词：
SPME; surface; trace analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
SPME is a powerful trace analysis technique which involves several thermal processes: fiber cleaning, conditioning, surface analyte adsorption, and desorption in the analytical device. Fiber conditioning is a main operation, since it results in a severe modification of the fiber surface, enhancing its adsorptive properties. The influence and orders of magnitude of the thermal parameters required for desorption are evaluated and discussed. The cooling down due to adsorbate desorption is completely negligible in comparison with the heat transfer capabilities of the system. Thus, the limiting factor is not heat transfer, but desorption activation energy.
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页码：681 / 690
页数：9
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