Renyi Zhang

US Patent:

7375317, May 20, 2008

Filed:

Jul 29, 2005

Appl. No.:

11/193560

Inventors:

Renyi Zhang - College Station TX, US

Assignee:

The Texas A&M University System - College Station TX

International Classification:

H01J 49/40
G01N 27/64

US Classification:

250287, 250282

Abstract:

A method and apparatus for conducting mass spectrometry. The mass spectrometry may be accomplished by ion drift-chemical ionization mass spectrometry. One embodiment includes a chemical ionization mass spectrometer comprising an ion drift zone having an ion conductor that transports positive or negative ions. The chemical ionization mass spectrometer further comprises an ion source that produces the positive or negative ions and a mass spectrometer.