TOMSK REGIONAL CENTER FOR COLLECTIVE USE
Analytical Center of Natural Systems Geochemistry
Differential Thermal Analysis (STA409РС)
Thermal analysis allows
• study of thermal processes and reactions that occur in heated minerals and rocks
• identification and determination of thermoactive minerals
• qualitative and quantitative phase analysis of finely divided polymineral natural mixtures without dividing them into monomineral fractions
• study of the kinetics and heats of phase transformations and chemical reactions
• the FT/IR-6600 IR-Fourier device measures the optical spectrum of gaseous substances.
X-ray analysis (Panalytical X ’PERT PRO diffractometer)
The analysis is effective in the study of clay minerals, carbonates and chlorides due to their small particle size, and determines
structural features of rocks, ores and mixtures of minerals • size of structural heterogeneities and crystallites, size of coherent scattering regions
• quantitative phase composition
• crystallinity index
• unit cell dimensions of minerals.
Inductively Coupled Plasma Mass Spectrometry (Agilent 7500cx)
Determines the concentration of trace elements (from Li to U) with high sensitivity (up to 10-10 wt.% in solutions and up to 10-7 wt.% in the solid phase). Quantitative analysis methods are used
• rocks and ores for the content of rare and trace elements, noble metals
• natural waters
• biological objects of plant and animal origin.
Atomic Emission Spectroscopy (iCAP 7400 Duo)
ICP-AES methods have been developed to determine
• silicate composition
• distribution of nonferrous (heavy) metals in aqueous solutions, grounds, soils, rocks and ores, metals and alloys, petroleum products. It has exceptional sensitivity with a detection limit of up to 0,001-0,01 ppm.
Laser Ablation System (Analyte Excite)
The excimer laser ablation system allows local (from 10 microns) studies of the chemical and isotopic composition. It is possible to study materials such as
• transparent glass
• bones, fossils
• various minerals (zircon, apatite, xenotime, monazite, baddeleyite).
Scanning Electron Microscopy (VEGA II LMU)
An electron microscope with a set of attachments allows
• morphology analysis of the topographic surface of the material: shear fractures, pore space, etc. (SE)
• determinate variations of mineral and elemental compositions (BSE)
• semi-quantitative determination of the phase chemical composition at a local point on the surface using an Oxford INCA Energy350 energy-dispersive microanalysis
• crystal orientation mapping and defect research (EBSD)
• study of the internal structure of mineral grains by cathodoluminescent analysis.