2014
DOI: 10.5935/0100-4042.20140312
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New Sorbent With Lower Hydrophobicity for Solid Phase Extraction: Preparation and Characterization

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“…4–8,19,21,22. It is important to highlight that a large number of studies involving adsorption of electroactive organic species, such as phenolic compounds 23, pesticides 24, drugs 25 and dyes 26 are found in literature. All these studies could be conducted using the voltammetric approach described here with the same advantages of simplicity, low time analysis, high temporal resolution and low reagents consumption.…”
Section: Resultsmentioning
confidence: 99%
“…4–8,19,21,22. It is important to highlight that a large number of studies involving adsorption of electroactive organic species, such as phenolic compounds 23, pesticides 24, drugs 25 and dyes 26 are found in literature. All these studies could be conducted using the voltammetric approach described here with the same advantages of simplicity, low time analysis, high temporal resolution and low reagents consumption.…”
Section: Resultsmentioning
confidence: 99%
“…Após a evaporação do solvente, os analitos foram recuperados em 5 mL de eletrólito de suporte, tampão B.R.0,04 mol L -1 pH = 2, seguido do registro de voltamogramas de pulso diferencial. Antes de cada pré-concentração, 10 mL de metanol foram eluídos pelos cartuchos para remoção dos possíveis O objetivo inicial deste trabalho era quantificar PROP em formulações farmacêuticas e em águas residuais, através de um método voltamétrico desenvolvido utilizando um eletrodo de pasta de carbono modificado com Si(PDAS), uma vez que este material apresenta capacidade de retenção do PROP por meio de interações hidrofílicas com o suporte de sílica e hidrofóbicas com a camada polimérica[63].…”
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