MAGNETICALLY-INDUCED SOLID-PHASE MICROEXTRACTION FIBER ACTUATION SYSTEM FOR QUANTITATIVE HEADSPACE AND LIQUID SAMPLING

摘要

A magnetically-induced SPME fiber actuation system includes a SPME fiber holder and a SPME fiber holder actuator, for holding and magnetically actuating a SPME fiber assembly. The SPME fiber holder has a plunger with a magnetic material to which the SPME fiber assembly is connected, and the magnetic SPME fiber holder actuator has an elongated barrel with a loading chamber for receiving the SPME fiber assembly-connected SPME fiber holder, and an external magnet which induces axial motion of the magnetic material of the plunger to extend/retract the SPME fiber from/into the protective needle of the SPME fiber assembly.

主权项

1. A SPME fiber holder for holding a SPME fiber assembly of a type having a protective tube, a SPME fiber positioned inside the protective tube, and an end connector operably connected to the SPME fiber to actuate the SPME fiber between a retracted position in the protective tube and an extended position outside the protective tube, said SPME fiber holder comprising:
a plunger having a magnetic material and adapted to connectably receive the end connector of the SPME fiber assembly; and a hollow cylinder having an open end, an opposite closed end with an aperture, and a chamber adapted to receive through the open end the SPME fiber assembly-connected plunger so that the protective tube extends out through the aperture, whereby the plunger may be actuated to extend/retract the SPME fiber from/into the protective tube by an off-device magnet which induces axial motion of the magnetic material of the plunger.