title: [Simultaneous determination of lead and copper in food by differential potential stripping with the presence of emulgent OP].
abstract: The effect of different surfactants on the stripping analysis of Pb and Cu was studied. The optimum condition for simultaneous determination of Pb and Cu in foods by the differentital potential stripping analysis in the 0.3 mol/L HCl media and by using emulgent OP as spike agent was described. The contents of Pb and Cu in soft drinks, fermented wine and flavourings with added standards were determined directly by synchronous mercury plating. The recovery of the added standard samples were 95%-105%, and relative standard deviation was 0.8%-7.9%. The proposed method has been applied to the sample analysis.
authors.affiliation: Hebei Tangshan Epidemic Prevention Station, Tangshan, China.
authors.forename: W
authors.initials: W
authors.lastname: Zhang
authors.forename: Z
authors.initials: Z
authors.lastname: Hu
mesh_terms: D019342:Acetic Acid / Q000032:analysis; D001628:Beverages / Q000032:analysis*; D003300:Copper / Q000032:analysis*; D006801:Humans; D007854:Lead / Q000032:analysis*; D011199:Potentiometry / Q000379:methods; D013501:Surface-Active Agents; D014920:Wine / Q000032:analysis
chemical_list: D013501:Surface-Active Agents; D007854:Lead; D003300:Copper; D019342:Acetic Acid