Methods, sensors and replacements for the detection and / or analysis of compounds that present simultaneously four nuclear magnetic resonance and four nuclear magnetic resonance or four nuclear magnetic resonance

摘要

A walnut compound can be used for quadrupole resonance B walnut can be used for magnetic resonance The method includes: (a) applying 1erh1 magnetic field to banded nucleon a in the range of quadruple resonance frequency of nucleon a, and applying 2O magnetic field Ho and 3R magnetic field H2 to banded nucleon B, wherein the 1R pulse of Ho and H1 ignites at the same time, and H2 transforms in frequency. When the quadruple resonance signal of nucleon a reaches the maximum, Ho is turned off,(c) Digitize and add the signal signal detected during ho shutdown to synchronize with the stimulation pulse of H1; (d) re ignite Ho (c) after completion, so as to increase and reduce the minimum volume of detectable and / or analyzable compounds;(e) Repeat (b) a (d) until an appropriate Senal noise ratio is obtained to detect the compound; and (f) in the case of a positive or negative Senal, a warning signal is issued to detect and / or analyze the next compound. The sensor elements include: the first coil to generate Ho, the second coil to generate H1, and the third coil to generate h2.2. Its shell surrounds a tunnel, passes through the conveyor belt, and passes through the sensor element