Nuclear magnetic resonance method for detecting hydrogen peroxide and apparatus for performing said method

US8242779B2 · kind B2 · utility

Assignee

• RWTH Aachen · DE

Inventors

• Bernhard Blumich · Simmerath, DE
• Lisandro Buljabasich Gentiletti · Aachen, DE
• Federico Casanova · Aachen, DE
• Juan Francisco Perlo · Aachen, DE

Key dates

• Filing date: Oct 13, 2009
• Grant date: Aug 14, 2012
• Expiry date: Dec 8, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N24/084
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A nuclear magnetic resonance (NMR) method for detecting hydrogen peroxide includes stimulating a spin signal in a liquid sample in a static magnetic field by exciting the sample with a first electromagnetic pulse having a frequency corresponding to a hydrogen NMR frequency; after a first time period, refocusing the spin signal by a series of second electromagnetic pulses also having the NMR-corresponding frequency and separated by a first echo time, while sampling a first train of spin signals; and refocusing the spin signal by a series of third electromagnetic pulses having the NMR-corresponding frequency and separated by a second echo time while sampling a second train of spin signals, the second echo time different from the first echo time. First and second spin-spin relaxation times are derived from the trains of spin signals, and a quotient of the spin-spin relaxation times indicates the presence of hydrogen peroxide.