Sherlan Lemos | UFPB - Universidade Federal da Paraíba (original) (raw)
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A preconcentrating/voltammetric multiwalled carbon nanotube modified glassy carbon electrode (MWC... more A preconcentrating/voltammetric multiwalled carbon nanotube modified glassy carbon electrode (MWCNT–GCE) has been developed for stripping analysis of carbendazim (Methyl Benzimidazol-2-yl Carbamate—MBC), based on dispersing MWCNT in water. The effect of experimental variables, such as the dispersion and loading of MWCNT, was assessed. A quasi-reversible behavior for MBC in acetic acid/acetate buffer 0.1 mol L À1 (pH 4.7) was verified and its high effective pre-concentration was attributed to the high adsorption capability and enormous surface area of the MWCNT. No evidence of carry-over effect, combined with the easiness of electrode preparation, led to the development of a highly sensitive and reliable method with an experimental work range from 0.256 to 3.11 mmol L À1 with a detection limit of 10.5 ppb for a short (60 s) accumulation period. Measurement of MBC in a river water sample was demonstrated. The accuracy of the method for real sample analysis was assessed by estimating the apparent recovery (93 AE 2.9% and 86 AE 4.1% for 4.3 Â 10 À7 mol L À1) for a MBC spiked river water sample.
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Fuel, 2015
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Revista Brasileira de Ciência do Solo, 2005
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Spectrochimica Acta Part B-Atomic Spectroscopy, 2011
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Fuel, 2014
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Synthetic Metals, 2009
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Sensors and Actuators B: Chemical, 2003
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Microchemical Journal, 2013
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Microchemical Journal, 2013
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Journal of Power Sources, 2007
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Journal of Plant Physiology, 2009
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Journal of Applied Polymer Science, 2000
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Journal of Analytical Atomic Spectrometry, 2011
J. Anal. At. Spectrom., 2011, Advance Article DOI:10.1039/C0JA00071J (Paper). Exploring the emiss... more J. Anal. At. Spectrom., 2011, Advance Article DOI:10.1039/C0JA00071J (Paper). Exploring the emission intensities of ICP OES aided by chemometrics in the geographical discrimination of mineral waters. Alexandre Luiz Souza ...
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Journal of Agricultural and Food Chemistry, 2004
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Journal of Agricultural and Food Chemistry, 2005
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A preconcentrating/voltammetric multiwalled carbon nanotube modified glassy carbon electrode (MWC... more A preconcentrating/voltammetric multiwalled carbon nanotube modified glassy carbon electrode (MWCNT–GCE) has been developed for stripping analysis of carbendazim (Methyl Benzimidazol-2-yl Carbamate—MBC), based on dispersing MWCNT in water. The effect of experimental variables, such as the dispersion and loading of MWCNT, was assessed. A quasi-reversible behavior for MBC in acetic acid/acetate buffer 0.1 mol L À1 (pH 4.7) was verified and its high effective pre-concentration was attributed to the high adsorption capability and enormous surface area of the MWCNT. No evidence of carry-over effect, combined with the easiness of electrode preparation, led to the development of a highly sensitive and reliable method with an experimental work range from 0.256 to 3.11 mmol L À1 with a detection limit of 10.5 ppb for a short (60 s) accumulation period. Measurement of MBC in a river water sample was demonstrated. The accuracy of the method for real sample analysis was assessed by estimating the apparent recovery (93 AE 2.9% and 86 AE 4.1% for 4.3 Â 10 À7 mol L À1) for a MBC spiked river water sample.
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Fuel, 2015
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Revista Brasileira de Ciência do Solo, 2005
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Spectrochimica Acta Part B-Atomic Spectroscopy, 2011
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Fuel, 2014
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Synthetic Metals, 2009
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Sensors and Actuators B: Chemical, 2003
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Microchemical Journal, 2013
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Microchemical Journal, 2013
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Journal of Power Sources, 2007
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Journal of Plant Physiology, 2009
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Journal of Applied Polymer Science, 2000
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Journal of Analytical Atomic Spectrometry, 2011
J. Anal. At. Spectrom., 2011, Advance Article DOI:10.1039/C0JA00071J (Paper). Exploring the emiss... more J. Anal. At. Spectrom., 2011, Advance Article DOI:10.1039/C0JA00071J (Paper). Exploring the emission intensities of ICP OES aided by chemometrics in the geographical discrimination of mineral waters. Alexandre Luiz Souza ...
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Journal of Agricultural and Food Chemistry, 2004
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Journal of Agricultural and Food Chemistry, 2005
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