【Abstract】 The paper reports the method applieable for determination of traces of mercury in 2.0mol·L -1 HCl 1.5 mol·L -1 NaCl 1.0μg·ml -1 Cd 2+ medium with differential pulse anoldic stripping voltammetry.Stripping peak and concentration of Hg is linear in range of 0.50～100ng·ml -1 when the deposition time is 5min.The relative standard deviation of 4.0ng·ml -1 Hg 2+ is 8.87% while n=8.After enrichment and separation of Hg in synthetic samples is obtained by using a microcolumn of sulfhydry cotton,the average recovery is about 80%.更多还原