Laboratory for Radiogenic Isotope Geochemistry
Facility in the School of Earth and Space Sciences, USTC, includes an ultra-clean laboratory, equipped for the preparation of samples for isotopic analysis of U, Th, Pb, Sm, Nd, Rb, Sr, Re and Os elements. Concentration analyses are performed by the isotope dilution technique. Separation and purification of elements are done by ion exchange column chemistry in filtered-air boxes.
Thermal Ionization Mass Spectrometer (TIMS) - Finnigan MAT-262
The Laboratory for Radiogenic Isotope Geochemistry in USTC runs a Finnigan MAT-262 solid source thermal ionization mass spectrometer. This instrument was installed in 1996 and used for measurements of isotopic composition of U, Th, Pb, Sm, Nd, Rb, Sr, Os elements.
This MAT-262 mass spectrometer is equipped with adjustable Faraday multi-collectors and one collector of the Secondary Electron Multiplier (SEM) that allow for simultaneous measurement of several separate isotopes. The MAT-262 can measure isotopic ratios of elements in positive or negative ion modes.
MAT-262 Mass Spectrometer