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DOE OSTI · 1264416

Surface sampling concentration and reaction probe with controller to adjust sampling position

Van Berkel, Gary J.·ElNaggar, Mariam S.
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Abstract

A method of analyzing a chemical composition of a specimen is described. The method can include providing a probe comprising an outer capillary tube and an inner capillary tube disposed co-axially within the outer capillary tube, where the inner and outer capillary tubes define a solvent capillary and a sampling capillary in fluid communication with one another at a distal end of the probe; contacting a target site on a surface of a specimen with a solvent in fluid communication with the probe; maintaining a plug volume proximate a solvent-specimen interface, wherein the plug volume is in fluid communication with the probe; draining plug sampling fluid from the plug volume through the sampling capillary; and analyzing a chemical composition of the plug sampling fluid with an analytical instrument. A system for performing the method is also described.

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Van Berkel, Gary J., ElNaggar, Mariam S.. 2016-07-19. Surface sampling concentration and reaction probe with controller to adjust sampling position. https://www.osti.gov/biblio/1264416

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