INTERFERENCE EFFECTS AND THEIR ELIMINATION BY STANDARD ADDITION AND SUCCESSIVE DILUTION METHOD AT THE MERCURY DETERMINATION BY CONTINUOUS-FLOW COLD VAPOR ATOMIC-ABSORPTION SPECTROMETRY

The general character of the interference effects occurring in the con tinuous flow old vapour technique was estimated. It was found that all elements, which are reduced together with the mercury either to their elemental form or to the form of unstable volatile hydrides that deco mpose at the room temperature, are the virtual interferents. The mecha nism of interferences has been proposed.It was found that the standard addition and successive dilution (SASD) method may be used successful ly for evaluation of analytical signals measured by this technique in the presence of interferents. It was also found that the equipment sys tem can memorize the interference effects and deform the results of th e successive samples.