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Title: Porous protective solid phase micro-extractor sheath

Abstract

A porous protective sheath for active extraction media used in solid phase microextraction (SPME). The sheath permits exposure of the media to the environment without the necessity of extending a fragile coated fiber from a protective tube or needle. Subsequently, the sheath can pierce and seal with GC-MS septums, allowing direct injection of samples into inlet ports of analytical equipment. Use of the porous protective sheath, within which the active extraction media is contained, mitigates the problems of: 1) fiber breakage while the fiber is extended during sampling, 2) active media coating loss caused by physical contact of the bare fiber with the sampling environment; and 3) coating slough-off during fiber extension and retraction operations caused by rubbing action between the fiber and protective needle or tube.

Inventors:
;
Publication Date:
Research Org.:
Univ. of California, Oakland, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175291
Patent Number(s):
6,871,556
Application Number:
09/917,475
Assignee:
The Regents of the University of California (Oakland, CA)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Andresen, Brian D., and Randich, Erik. Porous protective solid phase micro-extractor sheath. United States: N. p., 2005. Web.
Andresen, Brian D., & Randich, Erik. Porous protective solid phase micro-extractor sheath. United States.
Andresen, Brian D., and Randich, Erik. 2005. "Porous protective solid phase micro-extractor sheath". United States. https://www.osti.gov/servlets/purl/1175291.
@article{osti_1175291,
title = {Porous protective solid phase micro-extractor sheath},
author = {Andresen, Brian D. and Randich, Erik},
abstractNote = {A porous protective sheath for active extraction media used in solid phase microextraction (SPME). The sheath permits exposure of the media to the environment without the necessity of extending a fragile coated fiber from a protective tube or needle. Subsequently, the sheath can pierce and seal with GC-MS septums, allowing direct injection of samples into inlet ports of analytical equipment. Use of the porous protective sheath, within which the active extraction media is contained, mitigates the problems of: 1) fiber breakage while the fiber is extended during sampling, 2) active media coating loss caused by physical contact of the bare fiber with the sampling environment; and 3) coating slough-off during fiber extension and retraction operations caused by rubbing action between the fiber and protective needle or tube.},
doi = {},
url = {https://www.osti.gov/biblio/1175291}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {3}
}

Works referenced in this record:

Direct solid phase microextraction of complex aqueous samples with hollow fibre membrane protection
journal, January 1996