Brigham Young University

Samuel E Tolley

Milton L Lee

Edgar D Lee

Aaron Roe Hawkins

Jeffrey L Jones

Alan L Rockwood

H Dennis Tolley

Randall W Waite

Daniel E Austin

Stephen A Lammert

Anzi Wang

A system and method for thermal gradient gas chromatography wherein a front or injection end of a column is heated to a higher temperature than a back or detector end to thereby create a thermal gradient having a profile that is substantially monotonically non-increasing and has a positive second derivative, and then providing a heat source to raise the thermal gradient and cause it to remain stationary or to travel through the column while maintaining a desired profile.

Gas chromatography using a thermal gradient that is substantially monotonically non-increasing and has a positive second derivative

A scaled down version of a toroidal radio frequency (RF) ion trap mass analyzer operating with RF trapping voltages on the order of 1 kVyet despite the reduced dimensions, retains roughly the same ion trapping volume as conventional 3D quadrupole ion traps, wherein the curved geometry enables construction of a compact mass analyzer and easy interface with conventional electron multipliers.

Miniature toroidal radio frequency ion trap mass analyzer

A coaxial hybrid ion trap that uses two substantially planar opposing plates to generate electrical focusing fields that simultaneously generate at least two different types or shapes of trapping regions, wherein a first trapping region is a quadrupole trapping region disposed coaxially with respect to the opposing plates, and wherein a second trapping region is a toroidal ion trap having a toroidal trapping region that is simultaneously created around the quadrupole trapping region.

Coaxial hybrid radio frequency ion trap mass analyzer

A single set of electrodes, wherein different electrical potentials are applied to the single set of electrodes at different times in order to perform both ion mobility-based spectrometry and mass spectrometry (MS) on a sample of ions, wherein the ions are processed by performing ion mobility-based spectrometry and mass spectrometry in any sequence, any number of times, and as isolated or superposed procedures in order to trap, separate, fragment, and/or analyze charged particles and charged particles derived from atoms, molecules, particles, sub-atomic particles and ions.

Single device for ion mobility and ion trap mass spectrometry

Growing community of inventors

Springville, UT, United States of America

Samuel E Tolley