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The use of an automated device in the direct simultaneous determination of heavy metals in commercial coca cola by differential pulse anodic stripping voltammetry technique



The use of an automated device in the direct simultaneous determination of heavy metals in commercial coca cola by differential pulse anodic stripping voltammetry technique



Analytical Letters 16(A-11): 853-865



The performance of a polarographic analyzer equipped with a long-lasting, sessile-drop Hg electrode was described in the direct, simultaneous determination of heavy metals (Cd, Cu and Pb) in some Coca Cola samples (drawn from commercial bottles or cans). The determinations were performed by differential pulse anodic stripping voltammetry [DPASV] using a programed fully automated sequence (i.e., deposition-stripping-recording). The results obtained (1-3, 6-25 and 1.5-3.3 ppb for Cd, Cu and Pb, respectively) and those previously obtained in the stripping analysis of some seawater and mineral water samples suggested that the proposed automated device ensured sufficient sensitivity and accuracy to be employed in the DPASV determination of toxic metals (at trace and subtrace levels) in natural waters and beverages.

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Accession: 006785779

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