Micro scale flow through sorbent plate collection device

US8409510B2 · kind B2 · utility

Assignees

• United States of America as represented by the Secretary of the Air Force · US
• University of Louisville Research Foundation, Inc. · US

Inventors

• Robert Andrew McGill · Lorton, US
• Michael A. Martin · Hamilton, CA
• Mark Crain · Notre Dame, US
• Kevin Walsh · Louisville, US
• Eric Houser · Springfield, US
• Stanley V. Stepnowski · Alexandria, US
• Viet K. Nguyen · Gaithersburg, US

Key dates

• Filing date: Oct 2, 2006
• Grant date: Apr 2, 2013
• Expiry date: Jul 1, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/255
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In the invention, a collection device includes a flow through micro scale plate arranged to collect analyte. The plate includes holes, and sorbent coating on contact surfaces of the plate. The holes pass analyte fluid flow, for example analyte vapor so that fluid flow for collection may be generally perpendicular to the sorbent plate. Preferred embodiment plates include an integrated heater trace. In preferred embodiments, a high substantially perpendicular flow is used for collection and concentration, and during desorption and delivery a low substantially parallel flow is used. The low flow is selected to meet constraints of a detector system.