The United States of America as Represented by the United States

James F Kimmons

Robert Scott Glass

Joel Del Eckels

Brian D Andresen

Dino R Ciarlo

David W Myers

Sam P Perone

Walter H Martin

Robert F Keville

A gas chromatograph-mass spectrometer (GC-MS) for use as a field portable organic chemical analysis instrument. The GC-MS is designed to be contained in a standard size suitcase, weighs less than 70 pounds, and requires less than 600 watts of electrical power at peak power (all systems on). The GC-MS includes: a conduction heated, forced air cooled small bore capillary gas chromatograph, a small injector assembly, a self-contained ion/sorption pump vacuum system, a hydrogen supply, a dual computer system used to control the hardware and acquire spectrum data, and operational software used to control the pumping system and the gas chromatograph. This instrument incorporates a modified commercial quadrupole mass spectrometer to achieve the instrument sensitivity and mass resolution characteristic of laboratory bench top units.

Portable gas chromatograph-mass spectrometer

An electrochemical detection system is described comprising in combination:

Electrochemical sensor/detector system and method

A portable mass spectrometer is described having one or more electrostatic focusing sectors and a magnetic focusing sector, all of which are positioned inside a vacuum chamber, and all of which may be adjusted via adjustment means accessible from outside the vacuum chamber. Mounting of the magnetic sector entirely within the vacuum chamber permits smaller magnets to be used, thus permitting reductions in both weight and bulk.

Portable mass spectrometer with one or more mechanically adjustable

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Manteca, CA, United States of America

James F Kimmons