Introduction to Thermal Ionization Mass Spectrometry
Thermal ionization mass spectrometry (TIMS) is a mass spectrometry technique based on the separation and purification of samples on the surface of high melting metal strips such as Re and Ta, which generates thermal ionization by high temperature heating. It is mainly used in the measurement of high-precision isotope ratios in the fields of geochemistry, cosmic chemistry and geochronology, as well as atomic weight determination and high-precision isotope dilution analysis.
TIMS instruments have mainly experienced the development process from single receiver to multiple receivers. The representative instruments of the multi-receiver type mainly include Finnigan's MAT261 and 262, the newly launched TritonTI and VG's VG354, VG Sector54 and VG Sector 54-30. The advent of multi-reception mass spectrometry has made it possible to measure isotope ratios with high accuracy, high accuracy, and speed.