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Direct lead determination in wine by hydride generation-atomic absorption spectrometry
Authors:Jesus Sanz  Puy Basterra  Javier Galban  Juan R. Castillo
Affiliation:(1) Analytical Chemistry Department, University College of La Rioja, University of Zaragoza, Logroño, Spain;(2) Analytical Chemistry Department, Faculty of Sciences, University of Zaragoza, Zaragoza, Spain
Abstract:In this work, a method for direct lead determination in wine, without wet or dry sample attack, by lead hydride generation-atomic absorption spectrometry, is proposed. To do this, ammonium persulphate is employed as the oxidizing agent, and sodium borohydride is used as the reducing agent. The pH value must be 1.0.Lead content in wine is determined by the analyte addition technique, and the result is compared with those obtained by three different methods.
Keywords:lead  hydride generation  AAS  wine sample
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