Selective and Sensitive Determination of Mercury(II) Ions in River Water by an Automatic HPLC System Combined with On-Line Column Enrichment as 2-Mercaptopyrimidine Chelate
Abstract:A selective and sensitive determination method for mercury (Hg) ions in river water by reversed phase high performance liquid chromatography (HPLC) has been developed. Two mL of water sample containing Hg(II) ions was put into a 4 mL sample tube. To the sample tube, 500 mL of 2 mol=L (M) acetate buffer solution (pH 4.5), and 50 mL of 0.01 M 2-mercaptopyrimidine (MP) were added to form a neutral Hg chelate. The Hg chelate subsequently became preconcentrated in a reversed phase mini column. By switching the valv… Show more
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