Q&A The Column www.thecolumn.eu.com July 2006 Through the Eye of a Needle
Solid-phase dynamic extraction is a new method of automating sample
extraction by coating the inside of the injection syringe with sorbent.
This technique aims to take the tedium out of sample preparation and
reduce analysis times for a whole spectrum of chromatographic methods. The
Column spoke to Yassin Hardi of Chromtech to find out more. What is solid
phase dynamic extraction SPDE ? traditional SPME and to automate what is
often a time- consuming part of chromatographic analysis. One of the
Solid-phase dynamic extraction SPDE is an automated drawbacks of the
fibres used in SPME is that they are extremely method of extracting,
desorbing and analysing liquid or fragile. Since the SPDE syringe canulas
are made of stainless gaseous samples. In contrast to solid-phase micro
extraction steel they are mechanically rugged and reliable. SPME in which
the active sorbent material is externally Because the whole syringe canula
inside wall is coated onto a fibre, the coating for SPDE is located inside
the coated with sorbent phase, the extraction syringe needle, which means
much more of the sorbent capacity is much higher than with material 4.5
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Table of Contents for the Digital Edition of The Column - July 2006