METHOD TO DETECT SPATIAL DISTRIBUTION AND CONCENTRATION OF COMPONENT IN PORE SPACE OF POROUS MATERIAL Russian patent published in 2012 - IPC G01N23/83 

FIELD: measurement equipment.

SUBSTANCE: application: to detect spatial distribution and concentration of a component in a pore space of a porous material. The invention concept is as follows: it consists in the fact that a contrast X-ray substance is pumped into a sample of a porous material, such as a water-soluble salt of metal with high atomic weight that enters into a selective ion-exchange reaction with a surveyed component, of the common formula: R⁺M^-, where R⁺ is selected from the group {Ba ⁺; Sr²⁺; Tl⁺; Rb⁺…}, and M^- is selected from the group {Cl_n; NO_n; OH_n; CH₃COO, SO₄; …} in accordance with the table of solubility of inorganic substances in water, upon completion of the reaction of selective ion exchange, a non-contrast displacement agent is pumped into a sample, the sample is scanned by means of X-ray microtomography to define spatial distribution and concentration of a surveyed component by means of analysis of the produced computer tomographic image.

EFFECT: higher X-ray contrast of low-contrast components contained in a pore space, when doing computer tomography of porous material samples.

2 cl, 2 dwg