Summary
Computerized potentiometric stripping analysis (PSA) was used for the determination of lead in wine samples. With this analytical method the sample preparation is limited to dilution with an appropriate supporting electrolyte (0.5 mol/l HCl and 40 mg/l Hg2+). Due to very high sensitivity the time needed for one determination can be reduced to 2 min. This method for lead determination in wine was compared with results from voltammetry and ETAAS from various laboratories participating in two BCR studies. With PSA it is possible to determine cadmium, lead and copper in wine after a single dilution with an appropriate supporting electrolyte. For other elements such as Bi, Tl, Hg, Sn, As, Zn determination procedures are under development.
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References
Eschnauer H (1986) Naturwissenschaften 73:281–290
Marin C, Ostapczuk P (1992) Fresenius J Anal Chem 343:881–886
Eschnauer HR, Stoeppler M (1992) Hazardous metals in the environment. Elsevier, Amsterdam London New York Tokyo
Ostapczuk P (1993) Fresenius J Anal Chem (in press)
Mannino S, Fragepane G, Bianco M (1989) Electroanal 1:177–180
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Froning, M., Mohl, C. & Ostapczuk, P. Interlaboratory quality control for lead determination in wine by potentiometric stripping analysis. Fresenius J Anal Chem 345, 233–235 (1993). https://doi.org/10.1007/BF00322598
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DOI: https://doi.org/10.1007/BF00322598