2009
DOI: 10.1016/j.talanta.2009.04.024
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A simple and sensitive detection of diquat herbicide using a dental amalgam electrodeA comparison using the chromatographic technique

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Cited by 28 publications
(10 citation statements)
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“…Table 2 shows a comparison between the results presented in the present work and similar data obtained by using other electrode surfaces, which indicated that the calculated DL and QL values have lower threshold than the corresponding values from other works, developed using other electrode surfaces, such as amalgam [14], gold [15] and mercury electrodes [17]. Moreover, the results presented in this work were obtained without activation or cleaning of the electrode surface between each voltammetric measure due to the adsorption process of the diquat herbicide being greatly minimised by the use of HBDD.…”
supporting
confidence: 78%
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“…Table 2 shows a comparison between the results presented in the present work and similar data obtained by using other electrode surfaces, which indicated that the calculated DL and QL values have lower threshold than the corresponding values from other works, developed using other electrode surfaces, such as amalgam [14], gold [15] and mercury electrodes [17]. Moreover, the results presented in this work were obtained without activation or cleaning of the electrode surface between each voltammetric measure due to the adsorption process of the diquat herbicide being greatly minimised by the use of HBDD.…”
supporting
confidence: 78%
“…The electrochemical mechanism associated to reversible peaks involves the formation of the adsorbed species on the electrode surfaces [14,15,18]. However, the use of the HBDD minimizes the adsorption process, for this, when the HBDD is used as electrode surface, the redox mechanism for diquat herbicide is severely modified.…”
Section: Preliminary Experimentsmentioning
confidence: 99%
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“…Neste potencial, a reação de desprendimento de hidrogênio promove a completa remoção de reagente e/ou produtos adsorvidos, promovendo uma reprodutibilidade de 2 a 3% nas respostas voltamétricas. 41,42,49,50 Estabilidade química e mecânica A estabilidade química dos SAE permite que possam ser empregados em meios agressivos, tais como meio fortemente ácido ou básico e em solventes orgânicos e, também, em meios onde possam ocorrer reações com formação de gases, pois a superfície sólida e compacta não permite a contaminação ou deterioração da superfície eletródica. Mikkelsen e colaboradores 51 desenvolveram um sistema automatizado para monitoramento contínuo de traços de metais em águas naturais, de drenagem e residuárias de plantas de tratamento de águas, utilizando elétrodos de amálgamas dentárias.…”
Section: Fácil Renovação Da Superfície Eletródicaunclassified
“…In the experimental procedure the authors used ionic liquids (ILs) and laccase to produce a biosensor. Melo et al 145 proposed a simple and sensitive method for detection of diquat herbicide in water and potato samples using dental amalgam electrode. Santos et al 146 proposed an imaging mass spectrometry method using laser ablation inductively coupled plasma spectrometry for Cu, Zn, Cd, Hg and Pb determination and metal distribution in longitudinal tissue sections of marine snail Nassarius retic.…”
mentioning
confidence: 99%