Mass-spectrometric study of unithiol water-acetonitril solutions

Unithiol test is widely used for study of biological effect on living organisms of geomagnetic and space physical factors; the test is based on semi oxidation time measurements done electrochemically or photo metrically. To measure the products of unithiol oxidation reaction and rates of their production, ESI mass-spectrometric study has been made. Unithiol associates cathionated with Na+ have been found in mass-spectra of its water-acetonitrile solutions with general formula (C3H7O3S3Na) n Na+ with n up to 8; they present in essential amount together with Na+ cathionated monomer ion. Associate peak intensities were decreased with the molecular number, but their total intensity was higher than that of monomer. The associate total intensity grows with increase in concentration, this is an evidence for their production directly in the solution. Unithiol oxidation process study can give additional information about the outer factor effect on oxidation and reduction processes in a living body.