Organizing co mmittee

 = 2C
6
H
6
О
6
 + Se + Н
2
О + 2NaOH
(reaction 1) 
UV spectroscopic, FTIR-spectroscopy, and DLS studies were carried out to 
determine the amount, structure, size, and shape of SeNPs synthesized in the Na-CMC 
matrix. 
According to the results, UV absorption intensities were not observed in Na-СMС, 
SeO
3
2-
-СMС solutions, and the free passage of UV rays from the transparent solution 
confirms that red SeNPs were not formed in the solutions. After the reduction of SeO
3
2-
ions with C
6
H
8
O
6
, in the solution of Na-CMC the content of SeNPs were 0,0237 mg/ml 
in solution and solution colored red and the absorption of 
A=3.5%
of the UV rays with a 
wavelength of λ
max 
=300-350 nm in the solution characterizes the formation of SeNPs in 
the solution. The hydrodynamic diameter of SeNPs and their diffusion in solution were 
investigated by dynamic light scattering (DLS) and spherical SeNPs with diameters of 
70-97 nm and a scattering rate of 60% were formed in the solution.
In conclusion, the amount, size, and size control of SeNPs formed in the Na-CMC 
solution could be characterized by UV-spectroscopy, FTIR-spectroscopy, and DLS. 
This work was funded by the Ministry of Innovative Development of the Republic 
of Uzbekistan. Uzbekistan-Belarus № MRB-2021-538 was implemented within the 
framework of the international research project "Production of anti-tumor drugs, 
chemical-pharmaceutical, medical-biological properties on the basis of polymer-
stabilized selenium nanoparticles" (2022-2023). 

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Poster presentation 
302