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.

Abstract: A nuclear magnetic resonance (NMR) method for detecting hydrogen peroxide includes providing a liquid sample in a static magnetic field; stimulating a spin signal in the sample by exciting the sample with a first electromagnetic pulse having a frequency corresponding to the hydrogen NMR frequency in the static magnetic field; waiting for a first time period; refocusing the spin signal in the sample for a first number of times by a series of second electromagnetic pulses having a frequency corresponding to the hydrogen NMR frequency in the static magnetic field, said second electromagnetic pulses being separated by a first echo time, while sampling a first train of spin signals in between the second electromagnetic pulses; and refocusing the spin signal in the sample for a second number of times by a series of third electromagnetic pulses having a frequency corresponding to the hydrogen frequency in the static magnetic field, said third electromagnetic pulses being separated by a second echo time while samplin