Claims
- 1. A holder for an SPME fiber, comprising:
a plunger assembly in which an SPME fiber is adapted to be mounted, and a pair of end caps removably mounted to opposite ends of said plunger assembly in a sealing relation to the plunger assembly.
- 2. The holder of claim 1, wherein said plunger assembly includes a pair of removably interconnect barrel sections, each having an opening extending longitudinally therethrough and in which an associated SPME fiber is adapted to be mounted.
- 3. The holder of claim 2, wherein a first of said pair of barrel sections is provided with a sheath mounted in said opening therein and extending from said first barrel section for protecting an associated SPME fiber, and wherein a second of said pair of barrel section is provided with a pusher and constructed to be rotationally and laterally moved to enable movement of an associated SPME fiber within said sheath for exposing or retracting such an associated SPME fiber.
- 4. The holder of claim 2, wherein each of said pair of barrel sections is provided with seal which provides sealing with and retaining of an associated end cap.
- 5. The holder of claim 4, wherein an outer end section of each of said pair of barrel section has a reduced cross-section, a groove located in each said reduced cross-sections, and wherein said seal comprises an σ-ring mounted in each groove.
- 6. The holder of claim 3, wherein one of said end caps includes a member for retaining an outer end of said sheath.
- 7. The holder of claim 3, wherein said second of said pair of barrel sections is constructed to include a U-shaped groove having a pair of leg sections and an interconnecting section, and wherein said pusher is provided with a member that is movable along said U-shaped groove when said pusher is moved rotationally and laterally.
- 8. The holder of claim 3, in combination with an SPME fiber assembly located with said openings of said pair of barrel sections, and comprising a spring, a pair of end members, and an SPME fiber, and wherein lateral movement of said pusher in one direction causes compression of said spring and outward movement of said SPME fiber located within said sheath for exposure of an end of said SPME fiber to a selected condition, and wherein lateral movement of said pusher in an opposite direction withdraws said SPME fiber to be within said sheath.
- 9. The combination of claim 8, wherein one of said pair of end members of said SPME fiber assembly is positioned in an abutting relation with an inner end of one of said pair of barrel sections.
- 10. The combination of claim 8, wherein another of said pair of end members of said SPME fiber assembly is removably secured to said pusher.
- 11. The combination of claim 8, wherein said SPME fiber assembly additionally includes a longitudinally extending member mounted to at least contact an inner end of said SPME fiber, extend through said spring and through one of said pair of end members, and at least contact another of said pair of end members, whereby lateral movement of said plunger causes lateral movement of said longitudinally extending member and movement of said SPME fiber.
- 12. An SPME holder, comprising:
a pair of interconnected barrel sections each having an opening extending therethrough, a pair of end caps operatively mounted to said pair of barrel sections, each of said pair of barrel sections having an opening extending therethrough, one of said pair of barrel sections having a sheath extending therefrom, another of said pair of barrel sections including a pusher operatively connected thereto, an SPME fiber assembly positioned in said openings in said pair of barrel sections and having an SPME fiber extending into said sheath, a pair of end members with one abutting an end of said one of said pair of barrel sections and another removably mounted to said pusher, a spring located intermediate said pair of end members, and a longitudinally extending member within said spring and at least adapted to contact said SPME fiber and said another end member, whereby lateral movement of said pusher causes movement of said SPME fiber within said sheath.
- 13. The SPME holder of claim 12, wherein said another of said pair of barrel sections includes a groove, and wherein said pusher includes a member adapted to move along said groove.
- 14. The SPME holder of claim 12, wherein one of said end caps is provided with a member for retaining an end of said sheath.
- 15. The SPME holder of claim 12, wherein each of said barrel sections is provided with a seal member which both seals with and retains an associated end cap thereon.
- 16. The SPME holder of claim 15, wherein each seal member comprises an σ-ring.
- 17. The SPME holder of claim 12, wherein each of said pair of interconnected barrel sections includes a threaded end section for removably interconnecting said barrel sections.
- 18. The SPME holder of claim 12, wherein each of said pair of barrel sections include an outer reduced diameter end section, said pair of end caps being mounted to said reduced diameter end sections.
- 19. The SPME holder of claim 18, wherein each of said reduced diameter end sections is provided with a groove, and an σ-ring positioned in said groove.
RELATED APPLICATION
[0001] This application is a continuation-in-part of U.S. application Ser. No. 09/834,138, filed Apr. 12, 2001, entitled Solid Phase Microextraction Field Kit.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09834138 |
Apr 2001 |
US |
Child |
10126792 |
Apr 2002 |
US |