Determination of azinphos-methyl by adsorptive stripping voltammetry |
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Authors: | Pedro Hernández Encarnacion Lorenzo Lucas Hernández |
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Affiliation: | Analytical Chemistry Department, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid Spain |
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Abstract: | A very sensitive electrochemical stripping procedure for azinphos-methyl (Guthion) is reported. Accumulation is achieved by adsorption of the compound on a hanging mercury drop electrode. The adsorptive stripping response was evaluated with respect to accumulation time and potential, concentration dependence, electrolyte and other variables. The determination limit is 0.2 ng ml?1 after 300 s accumulation and 0.4 ng ml?1 after 180 s accumulation. The procedure was applied to spiked river water. |
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Keywords: | Adsorptive stripping Azinphos-methyl Guthion Waters |
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