ЯМР во временной области (ТД-ЯМР)

ЯМР во временной области (ТД-ЯМР)

The full name of time-domain nuclear magnetic resonance is Time domain NMR, or TD-NMR for short.

ЯМР во временной области (ТД-ЯМР) is a NMR technique based on relaxation time detection. Time-domain NMR is generally tested and analyzed through T1 and T2 relaxation times. It is a characterization method, and the testing process is fast and non-destructive.

Time-domain NMR is widely used in scientific research and industrial quality control, with applications spanning food, сельское хозяйство, material science, petroleum energy, nano-pharmaceuticals… such as solid fat content (СФК) тестирование, seed oil content testing, fiber Oiling rate test, material aging and cross-linking degree, quantitative test of live animal body fat, и т. д..

Compared with the frequency-domain NMR analyzer, the time-domain NMR analyzer is generally a benchtop NMR based on permanent magnets, while the frequency-domain NMR is generally a superconducting magnet.

Time-domain NMR is to study the interaction between molecules, such as molecular mobility, from the difference in relaxation time; frequency-domain NMR is to study the internal structure information of sample molecules from the frequency difference.

Application direction of time-domain NMR:

1. Food quality related: water molecular mobility, water holding capacity, water binding, hydration;
2. Agricultural field: seed oil content, seed moisture content, seed soaking process, seed germination;
3. Food and agricultural product processing: drying process research, миграция влаги, moisture distribution, low temperature freeze drying;
4. Material domain: polymer aging, cross-linking, hardness research, и т. д.;
5. Industrial field: содержание твердого жира, fiber oiling rate;
6. Geological energy domain: core pore analysis, displacement experiment, freezing and thawing, frozen soil, конкретный

The features of time-domain NMR:

1. Based on permanent magnet technology, the maintenance cost is low;
2. Desktop NMR, the instrument is small and easy to install;
3. The instrument is easy to operate and can realize automatic operation;
4. Time-domain nuclear magnetic resonance is generally designed as a single-use function, and there is no requirement for operators;
5. The permanent magnet material is stable and the instrument is very durable;
6. The application of time-domain NMR continues to expand, with powerful functions and wide application scenarios;
7. The time-domain NMR test process is non-destructive, быстрый, green and pollution-free;

NIUMAG Time Domain NMR