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According to the conclusion of laboratory studies of the gamma spectroscopy department of the geological environment of the Institute of Geology of the National Academy of Sciences of Azerbaijan (06/01/2011), measurements using the SARI-2 gamma spectrometer showed that the natural zeolite-clinoptilolite of the Aydag deposit corresponds to the Technical Conditions TŞAZ1781832-01- in terms of radioactivity 2001 and State standards (RSN-31-93, QOST 3010894, GOST 12.1.007-76) and can be used for the production of food additives.

Table 4. The physical characteristics of the zeolite of the Aydag deposit.

№№	Parameter Name	Parameter value
1	Specific Pore Volume V	0,34 cm3 / g
2	Specific micropore volume Vm	0,13 cm3 / g
3	Density ɣ	1,75 g / сm3
4	Pore diameter dk	4± 0,5 Å
5	Mechanical strength index	0,75 kg/mm2
6	Heat resistance	≤ 6400С

According to the conclusion of the Russian Research Center for Emergency Situations of the Ministry of Health of Russia, the natural zeolite-clinoptilolite of the Aydag deposit, in terms of the concentration of polychlorinated dibenzo-p-dioxins and dibenzofurans, complies with the permissible standards (PROTOCOL No. 1BD / 02, 08.07.2002).

Not every clinoptilolite-zeolite is suitable for medical purposes. Its suitability must be indicated in the appropriate passports.

Zeolite-clinoptilolite is a highly effective adsorbent. Studies have shown that natural zeolite adsorbs various substances hazardous to health. The zeolite lattice structure allows it to function as an ion-exchange filter and selective adsorbent. The adsorption and exchange of ions depends on their charge and magnitude. The larger the ion size corresponds to the pore size at the entrance to the clinoptilolite lattice, the easier they will be captured and delayed by the lattice. The inlet pore diameter is approximately 4 angstroms, which corresponds to the diameter of ammonium ions.

Zeolite-clinoptilolite adsorbs: ammonia, heavy metals, radionuclides,

organochlorine and organofluorine compounds, arsenic, as well as most of the toxins released during the life of viruses, bacteria and fungi.