New developments in analytical chemistry research /Breanna Granger, editor.

Includes bibliographies and index.

NEW DEVELOPMENTS IN ANALYTICAL CHEMISTRY RESEARCH; NEW DEVELOPMENTS IN ANALYTICAL CHEMISTRY RESEARCH; Library of Congress Cataloging-in-Publication Data; Contents; Preface; Chapter 1: Analytical Methods for Organic and Inorganic Toxics Determination in Cosmetics Products; Abstract; Abbreviations; Introduction; Parabens; Regulatory Status of Parabens; Phthalates; Regulatory Status of Phthalates; Heavy Metals; Regulatory Status of Heavy Metals; Sample Pre-Treatment; Chromatographic Assays; Electrochemical Assays; Conclusion; References.

Chapter 2: Bioinspired Chemically Modified Electrodes for Electroanalysis1Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista, ; Rio de Janeiro, Brazil; 2Departamento de Ciências Exatas e Sociais Aplicadas, Universidade Sagrado Coração, Bauru, ; São Paulo, Brazil; 3Departamento de Físico-Química, Universidade Federal Fluminense, Outeiro de São João Batista, ; Rio de Janeiro, Brazil; 4Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Alfenas, Alfenas, ; Minas gerais, Brazil; Abstract; Introduction.

A Brief Overview Regarding History and Fundamentals of ElectroanalysisIonic Equilibrium and Electrolytes: Basic Important Aspects; General Basic Aspects of Voltammetric Approaches: External Perturbation; Supporting Electrolytes and Mass-Transport Mechanisms: Chemical Environment x Analyte; Double Layers and their Influence on Electroanalysis: Chemical Environment x External Perturbation; Working Electrode Materials; Solid Electrodes: Main Platforms for Modifications; Metal Electrodes; Carbon Based Electrodes; Glassy Carbon Electrodes (GCE); Carbon Composite Electrodes (Carbon Pastes, CPE).

Carbon Fiber Electrodes (CFE)Doped Diamond Electrodes (DDE); Chemically Modified Electrodes (CME): Seeking Natureś Recognition Capabilities; Enzymatic Biosensors; Immunosensors; Molecularly Imprinted Sensors (MIP-based Sensors); Electronic Tongues and Noses: Promising Trends; Acknowledgments; References; Chapter 3: Enhanced Electrochemical Properties of Multi-Walled Carbon Nanotube Paste Electrode for Simultaneous Determination of Phenolic Compounds in the Presence of Surfactant; Abstract; 1. Introduction; 2. Experimental; 2.1. Apparatus; 2.2. Reagents.

2.3. Preparation of Carbon Nanotube Paste Sensor2.4. Experimental Procedure; 3. Results and Discussion; 3.1. Influence of CPB on the Oxidation of Phenolic Compounds; 3.2. Comparative Study of Carbon Nanotubes Paste Sensor with Glassy Carbon Electrode; 3.3. Simultaneous Determination of Hydroquinone, Catechol, Guaiacol and 4-Nitrophenol; 3.4. Influence of Carbon Nanotube and Mineral Oil; 3.5. Influence of CPB Surfactant on Simultaneous Determination of Hydroquinone, Catechol, Guaiacol and 4-Nitrophenol.

Carbon-based nanomaterials such as carbon nanotubes (CNT), carbon black and fullerenes are interesting materials for the development of analytical methods. In electrochemistry, carbon nanotubes improves the electron transfer and provides an improvement in the analytical sensitivity and selectivity of phenolic compounds determination. This book discusses several topics on analytical chemistry including enhanced electrochemical properties of multi-walled carbon nanotube paste electrode for simultaneous determination of phenolic compounds in the presence of surfactant; analytical methods for orga.

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