Abstract: The clement mercury is of high vaporabilily at room temperature and ofstrong affinity for gold.Based on these characteristics of mercury,a new method—gaseous enrichment-stripping voltammctry for the determination of mercury was developed.The method is specific and quite sensitive.It was shown that the concentration range of mercury that could be quantitatively determined with a model 883 polarogragh was 0.2-8.0 ppb.The detection limit was 0.05 ppb.The method has been satisfactorily employed to analyse practical samples.