carbon paste
Electrochemical Oxidation of Fragrances 4-Allyl and 4-Propenylbenzenes on Platinum and Carbon Paste Electrodes
... Abstract. The electrochemical oxidation behaviors of 4-allylbenzenes (estragole, safrole and eugenol) and 4-propenylbenzenes (anethole, asarone and isoeugenol) on platinum and carbon paste electrodes were ...
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Electrochemical behaviors and electrochemical determination of carbamazepine at ionic liquid modified carbon paste electrode in the presence of sodium dodecyl sulfate
... a carbon paste electrode (CPE) and a 1-benzyl-3-methylimidazole hexafluorophosphate ([BnMIM]PF 6 ) modified carbon paste electrode ([BnMIM]PF 6 ...
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Determination of paracetamol in pharmaceutical products using a carbon paste biosensor modified with crude extract of zucchini (Cucurbita pepo).
... DETERMINATION OF PARACETAMOL IN PHARMACEUTICAL PRODUCTS USING A CARBON PASTE BIOSENSOR MODIFIED WITH CRUDE EXTRACT OF ZUCCHINI (Cucurbita pepo). Crude extracts of several vegetables such as peach (Prunus ...
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Optimization of the carbon paste electrode preparation containing riboflavin immobilized on an inorganic support.
... OPTIMIZATION OF THE CARBON PASTE ELECTRODE PREPARATION CONTAINING RIBOFLAVIN IMMOBILIZED ON AN INORGANIC SUPPORT. The aim of this work was to optimize the preparation of electrodes with riboflavin (RF) ...
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Carbon paste electrodes modified with humic acids: study and determination of metals in aqueous solution.
... CARBON PASTE ELECTRODES MODIFIED WITH HUMIC ACIDS: STUDY AND DETERMINATION OF METALS IN AQUEOUS ...the carbon paste electrodes modified with humic acids have been used for studying the ...
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Anodic stripping voltammetric determination of copper (II) in wastewaters using a carbon paste electrode modified with chitosan.
... Finalmente, utilizando voltametria de redissolução anódica em um intervalo de potencial de –0,2 a 0,5 V, a uma velo- cidade de varredura de potencial de 25 mV s -1 , ocorre a oxidação de[r] ...
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J. Braz. Chem. Soc. vol.26 número3
... A carbon paste electrode modified with PB has been fabricated and used for determination of UDMH in the presence of ...bare carbon paste ...
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Voltammetric Determination of Zn
... Anodic stripping voltammetry (ASV) is an alternative and promising analytical technique for metal determination. Attractive features of ASV include low reagent and sample consumption, increased sensitivity, low detection ...
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J. Braz. Chem. Soc. vol.19 número7
... The carbon paste electrode was prepared by hand-mixing of graphite powder, paraffin and Th-HCF ...the carbon paste-working electrode was a Teflon rod with a hole (3 mm diameter and 5 mm deep) ...
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J. Braz. Chem. Soc. vol.21 número8
... and presence of benserazide and/or levodopa, using both an unmodiied carbon paste electrode and a CAMCPE. Figures 1 and 2 show that benserazide and levodopa oxidations occur only to a broad extent with ...
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J. Braz. Chem. Soc. vol.11 número4
... on carbon paste modified with crude extract of zucchini (Cucurbita pepo) for determining L-ascorbic acid in pharmaceutical formulations is stable, selective, sensitive, simple and low ...
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J. Braz. Chem. Soc. vol.20 número9
... The carbon paste was prepared by thoroughly hand- mixing measured quantities of graphite powder and Nujol or castor ...using carbon paste. The carbon paste was packed into the ...
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Eclet. Quím. vol.32 número2
... of trace amounts of zinc, lead and copper in sugar cane spirits have been proposed based on anodic stripping voltammetry with a hanging mercury drop [19]. Another work proposed the determination of copper in sugar cane ...
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J. Braz. Chem. Soc. vol.21 número9
... modiied carbon paste was prepared by hand-mixing graphite powder and APSil in a 40:60 ratio ...uniform paste. The paste was introduced into a cavity with ...
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J. Braz. Chem. Soc. vol.15 número6
... final paste was obtained after evaporation of the solvent. The modified carbon paste was packed into an electrode body, consisting of plastic cylindrical tube ...
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J. Braz. Chem. Soc. vol.28 número4
... The carbon paste electrodes (CPEs) are very popular due to their wide anodic potential range, low residual current, ease of fabrication, easy renewal and low ...
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J. Braz. Chem. Soc. vol.13 número5
... In these studies the modified carbon paste electrodes were prepared by inclusion of flavin adsorbed on silica gel modified with zirconium oxide (Si:Zr:flavin). RF, FMN and FAD were investigated for their ...
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J. Braz. Chem. Soc. vol.24 número1
... multiwall carbon nanotubes (MWCNTs) were added to the carbon paste matrix, it can be seen that MWCNTs were distributed on the surface of electrode with special three-dimensional structure (Figure ...
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J. Braz. Chem. Soc. vol.28 número1
... Scanning electron microscopy (SEM) photographs were taken with a JEOL JSM-IT300LV microscopy. The SEM images were obtained in the backscattered electrons (BSE) mode. To avoid SEM microscopy damage, it was removed the ...
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J. Braz. Chem. Soc. vol.21 número9
... The irst step of this study was to ind out the inluence of pH on the peak current in the 2.0 to 10.0 range using Britton Robinson buffers. However, it was found that at acid pH adjusted with nitric acid peak current of ...
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