Determination of tetracycline in environmental water samples at a graphite-polyurethane composite electrode
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منابع مشابه
Determination of Paracetamol at a Graphite-Polyurethane Composite Electrode as an Amperometric Flow Detector
Um eletrodo compósito de grafite-poliuretana sem modificação foi avaliado como um detector amperométrico para análise em fluxo, na determinação de paracetamol (APAP) em formulações farmacêuticas. Uma curva analítica foi obtida com região linear entre 5,00 x 10 e 5,00 x 10mol L, com um limite de detecção de 18,9 mol L e 180 determinações por hora, depois de parâmetros otimizados como potencial d...
متن کاملDetermination of hydroquinone in a square wave voltammetry procedure using a graphite-polyurethane composite electrode
In order to a better characterization of a graphite-polyurethane composite intended to be used as a voltammetric sensor, the performance in a square wave voltammetric procedure was investigated. Using hydroquinone (HQ) as a probe, the electrode showed to be useful in square wave voltammetry with limit of detection of 0.28 μmol L-1, with recoveries between 99.1 and 101.5%. The results of the pro...
متن کاملUtilization of electrodeposition on a graphite probe modified with palladium in determination of lead by graphite furnace atomic absorption spectrometry in water and environmental samples
In this work a rapid and selective procedure for separation and preconcentration of lead(Pb2+) before determination by electrothermal atomic absorption spectrometry (ETAAS) wasdeveloped. The procedure is based on the electrodeposition on a graphite probe modified withpalladium. The lead was deposited from acetate buffer solution at pH 5.5. Various parameters,such as pH of solutions, deposition ...
متن کاملPossibilities Of Using A New Graphite-Castor Oil Polyurethane Composite Electrode As An Amperometric Flow Detector
The performance of a new graphite castor oil polyurethane composite electrode is evaluated as an amperometric flow injection detector using hydroquinone (HQ) as a probe. HQ was determined in photographic developers with a minimum detectable net concentration of 100 μmol L-1, and 81 determinations h-1, after optimization of parameters such as the detection potential, sample loop volume, and carr...
متن کاملElectrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode
An exfoliated graphite-polystyrene composite electrode was evaluated as an alternative electrode in the oxidation and the determination of oxalic acid in 0.1 M Na2SO4 supporting electrolyte. Using CV, LSV, CA procedures, linear dependences I vs. C were obtained in the concentrations range of oxalic acid between 0.5 to 3 mM, with LOD =0.05 mM, and recovery degree of 98%, without need of surface ...
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ژورنال
عنوان ژورنال: Journal of the Brazilian Chemical Society
سال: 2012
ISSN: 0103-5053
DOI: 10.1590/s0103-50532012000500020