Determination of Trace Lead in Vinegar by Flow Injection Hydride Generation - atomic Absorption Spectrometry

Abstract

Abstract: The paper studied the determination of trace lead in vinegar by flow injection hydride generation-atomic absorption spectrometry. It also studied the effects which the solution concentration of oxidizer, hydrochloric acid, potassium borohydride and the airflow applied to the sample determination. It determined the optimum experiment conditions. When Pb2+ is between 0 and 0. 12mg/L, good linear relation is formed. The rate of Pb2+ reclamation is from 96% to 105% and the detection limit 0.32μg/L. This method is simple, quick and sensitive. It has a satisfactory result in sample assaying.

Key words: flow injection, atomic absorption spectrometry, hydride generation, vinegar, lead

WEI Li-Bin, LUO Sheng-Tie, SONG Chang-You. Determination of Trace Lead in Vinegar by Flow Injection Hydride Generation - atomic Absorption Spectrometry[J]. FOOD SCIENCE, 2006, 27(6): 184-186.

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Determination of Trace Lead in Vinegar by Flow Injection Hydride Generation - atomic Absorption Spectrometry

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