Determination of linuron in water and vegetable samples using stripping voltammetry with a carbon paste electrode |
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| Authors: | de Lima F Gozzi F Fiorucci A R Cardoso C A L Arruda G J Ferreira V S |
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| Affiliation: | a Department of Chemistry, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Caixa Postal 549, Campo Grande, MS 79070-900, Brazil;b Universidade Estadual de Mato Grosso do Sul, Rod. Dourados-Itahum, km 12, s/n., Caixa Postal 351, Dourados, MS 79804-970, Brazil |
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| Abstract: | A carbon paste electrode was used for the electrochemical determination of linuron concentrations in water and vegetable extracts. Optimal conditions were established with respect to electrode activation (electrochemical pretreatment), time accumulation, potential accumulation, scan rate, and pH. The limit of detection achieved with a pre-concentration step was 23.0 μg L−1. Recovery measurements in vegetable extract and natural water samples were in the range of 98-103%, indicating that the proposed electrochemical method can be employed to analyze linuron in these matrices. The determination results were in good agreement with HPLC results. |
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| Keywords: | Linuron Square-wave voltammetry Water Vegetables Carbon paste electrode |
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