A5068252600- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Calcium signaling and nucleotide metabolism
- Toxin Mechanisms and Immunotoxins
- Analytical chemistry methods development
- GABA and Rice Research
- Pesticide Exposure and Toxicity
- Pharmacological Effects and Assays
- Geography and Environmental Studies
- Olfactory and Sensory Function Studies
- Analytical Chemistry and Chromatography
- Antioxidant Activity and Oxidative Stress
- Insect and Pesticide Research
- Biochemical Analysis and Sensing Techniques
- Polyamine Metabolism and Applications
- Transgenic Plants and Applications
- Advanced Chemical Sensor Technologies
- Animal Nutrition and Physiology
- Water Quality Monitoring and Analysis
Universidade Federal da Paraíba
2011-2022
Centro Universitário de João Pessoa
2015
A preconcentrating/voltammetric multiwalled carbon nanotube modified glassy 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 experimental variables, such as the dispersion and loading MWCNT, was assessed. quasi-reversible behavior MBC acetic acid/acetate buffer 0.1 mol L−1 (pH 4.7) verified its high effective pre-concentration attributed to adsorption capability enormous...
Standard methods for the detection of carbamate pesticides are expensive, time-consuming, and require highly trained employees. Thus, electroanalytical considered to be rapid, simple low-cost alternatives. Here, we develop sensitive voltammetric determination methomyl (a pesticide) using a bare boron-doped diamond electrode, square wave voltammetry (SWV), differential pulse (DPV) Britton–Robinson buffer (pH 2.0) as supporting electrolyte. Methomyl has three oxidation processes: meantime...
The electrocatalytic activity of cobalt(II)-phthalocyanine immobilized in a carbon paste electrode for citric acid oxidation under diffusion-controlled electrochemical process was employed to develop selective flow injection amperomettric analysis method. Under optimized conditions, rapid and reliable determinations (65 samples per hour) were achieved analyses commercial fruit juices with minor pretreatment the samples. A linear response accomplished ranging from 0.25 15 mmol L(-1)...
Xylitol is a reduced sugar with anticariogenic properties used by insulin-dependent diabetics, and which has attracted great attention of the pharmaceutical, cosmetics, food dental industries. The detection xylitol in different matrices generally based on separation techniques. Alternatively, this paper, application boron-doped diamond (BDD) electrode allied to differing voltammetric techniques presented study electrochemical behavior xylitol, develop an analytical methodology for its...
Ricin, (Ricinus communis agglutinin, RCA) is one of the most poisonous naturally occurring substances and has great potential for bioterrorism because no antidote exists. Fast detection at low concentrations a challenge, vital to development proper countermeasures. In this study, square wave adsorptive stripping voltammetric (SWAdSV) method determining RCA using cathodically polarized boron-doped diamond (BDD) electrode presented. An irreversible electrochemical oxidation peak was identified...
A simple and low cost method is presented for triclocarban determination in personal care products drinking water.
Ricin, Ricinus communis agglutinin 60 – RCA 60, is a deadly phytotoxic protein which inhibits ribosomes (class II), and there no known effective antidote in living organisms. Ricin composed of two polypeptide chains, A B, linked covalently by single disulfide bond. The analytical methods for the detection are commonly laborious, expensive, require skilled labor, involve sophisticated equipment. Aimed at development electroanalytical detection, here we studied electrochemical oxidation on...
A ·gua pode ser considerada como um fator de limitaÁ„o para o desenvolvimento industrial. No Brasil, por exemplo, teve-se a cultura do paÌs no mundo com mais disponibilidade doce e isso n„o aprendemos gerir nossa adequadamente. Esse mau gerenciamento comprometer sua qualidade, gastando-se ainda tratamentos, floculaÁ„o, abrandamento, desmineralizaÁ„o filtragem ativa. da chuva uma Ûtima fonte alternativa, vem que captaÁ„o armazenamento proporciona boa qualidade ind˙stria previne cheias. Um dos...