Automatic solid-phase microextraction sampling apparatus

Details Automatic solid-phase microextraction sampling apparatus Automatic solid-phase microextraction sampling apparatus

2011-08-30

2011-08-30

Larkin, Daniel S (Department: 2856)

Measuring and testing

Gas analysis

Gas chromatography

C073S061520, C073S061550, C422S069000, C422S070000, C422S507000, C436S161000

Reexamination Certificate

active

08006540

ABSTRACT:
An automatic solid-phase microextraction (SPME) sampling apparatus having a mobile sampler arm with a holder for a probe carrying a fiber9and an intermediate bracket for transferring the probe between a probe storage tray and the gas chromatograph injector. In the various probe handling stages, the probes are collected by a magnetic member attached to the end of the plunger in the holder, at the free end of the holder's body and at the lower end of the block for guiding the probe needle. The magnetic member interacts with a ferromagnetic connector attached to one end of the fiber and with a ferromagnetic flange attached to the end of the needle containing the fiber in order to place the probe on the transfer bracket or remove it therefrom. The apparatus can perform analyses on fibers that have already been exposed, extract analytes from samples, and subsequently transfer them for desorption in the gas chromatograph in a fully automatic way.

REFERENCES:
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patent: 7178414 (2007-02-01), Kokosa
patent: 2004/0025302 (2004-02-01), Alcaraz et al.
patent: 2004/0241874 (2004-12-01), Abdel-Rehim
patent: 2005/0011831 (2005-01-01), Pawliszyn
patent: 2401174 (2004-11-01), None

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