FIELD: ecological studies. SUBSTANCE: samples are taken from natural media, organo-mineral compositions are isolated from samples by means of chloroform extract, transferred into solvent transparent for ultraviolet region of spectrum, content of sum of organo-mineral compositions is determined by spectrometric method and estimation of natural objects and industrial installations is given by excess of their content relative to background. EFFECT: improved efficiency of estimation of degrees of pollution of natural environment and objects related to industry.
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