Applications of Ion Chromatography for Pharmaceutical and Biological Products

Applications of Ion Chromatography for Pharmaceutical and Biological Products
Author: Lokesh Bhattacharyya
Publisher: John Wiley & Sons
Total Pages: 421
Release: 2012-02-10
Genre: Medical
ISBN: 1118146999

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This is a comprehensive source of information on the application of ion chromatography (IC) in the analysis of pharmaceutical drugs and biologicals. This book, with contributors from academia, pharma, the biotech industry, and instrument manufacturing, presents the different perspectives, experience, and expertise of the thought leaders of IC in a comprehensive manner. It explores potential IC applications in different aspects of product development and quality control testing. In addition, an appendix section gives information on critical physical and chromatographic parameters related to IC and information on current manufacturers of IC systems, columns, and other components.

Pulsed Electrochemical Detection in High-Performance Liquid Chromatography

Pulsed Electrochemical Detection in High-Performance Liquid Chromatography
Author: William R. LaCourse
Publisher: Wiley-Interscience
Total Pages: 360
Release: 1997-08-18
Genre: Science
ISBN:

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A reliable, comprehensive, relevant view of HPLC and its applications The development of HPLC-PED represents the successful marriage of two powerful analytical technologies and has resulted in the best technique for sensitive and direct detection of biological compounds with poor optical detection properties. PED has been used extensively for the determination of carbohydrates and other polar aliphatic compounds, and as a result, numerous methods have been developed to enable the analysis of a wide variety of samples. Over the years, many articles, anecdotal information, and misinformation have permeated the scientific community, with the possible consequence of confusion or uncertainty with regard to PED on the part of the analyst. Pulsed Electrochemical Detection in High-Performance Liquid Chromatography presents a reliable, comprehensive, and relevant review of HPLC-PED and its applications. The book is divided into three major parts: background material necessary for a more thorough understanding of the principles and relevance of PED; an in-depth discussion of PED using voltammetry and other electroanalytical techniques and presenting the advantages, applicability, and optimization of all existing PED waveforms; and practical aspects of HPLC-PED, including a summary of the major applications and a look at future developments in the technique. Appendices include a pulsed voltammetry (PV) program specifically written to optimize pulsed amperometric detection (PAD) waveforms and all the known applications, categorized and listed in tabular form. For analytical chemists; biochemists; carbohydrate chemists; biotechnologists; undergraduate, graduate, and postdoctoral students; and lab technicians working in a range of areas including the pharmaceutical, medical, and food and beverage industries, this eminently readable guide is the first reliable book-length treatment of how to use PED coupled with HPLC.

Coulometric Electrode Array Detectors for HPLC

Coulometric Electrode Array Detectors for HPLC
Author: I.H. Acworth
Publisher: CRC Press
Total Pages: 393
Release: 2024-01-26
Genre: Science
ISBN: 1466563710

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This sixth volume in the book series Progress in HPLC-HPCE examines the enhancement of high- performance liquid chromatography through the development of an advanced mode of electrochemical detection (ECD) --- the coulometric array detection --- from its initial, yet problematic, amperometric (thin-layer) design to the highly sensitive, selective and stable coulometric (flow-through) design. Unlike amperometric electrodes, the coulometric electrode is 100% efficient and measures signals from all of the analyte passing through it, which leads to improved sensitivity as well as unique selectivity. The coulometric electrode array offers the resolution of the photodiode array with the extreme sensitivity of an electrochemical detector.

Application of Electrochemical Detectors for Improved Sensitivity in High Performance Liquid Chromatographic Separation and Quantitation of Ultratrace Pesticide and Coal Residues in Water

Application of Electrochemical Detectors for Improved Sensitivity in High Performance Liquid Chromatographic Separation and Quantitation of Ultratrace Pesticide and Coal Residues in Water
Author: James L. Anderson
Publisher:
Total Pages: 78
Release: 1982
Genre: Electrochemical analysis
ISBN:

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Electrochemical Detectors

Electrochemical Detectors
Author: T. Ryan
Publisher: Springer
Total Pages: 172
Release: 1984-08-01
Genre: Science
ISBN: 9780306417276

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The widely perceived utility of electrochemical detectors in High Performance Liquid Chromatography has focussed attention on a number of disparate aspects of electrochemistry related to their successful design and application. The papers in this volume deal with an extraordinarily wide range of topics but all have the common focus of electrochemical detection as a practical chromatographic tool. While it is certainly not essential to be familiar with the theoretical principles in order to utilize it successfully, the determined user of electrochemical detector will seek to have an understanding of the background. Some of the following pages will provide an excellent grounding as well as pointing the potential user in the direction of proven and possible applications in a variety of fields. The meeting, of which this book is a record, was the fifth event in the biannual Anglo-Czech Symposia in Electrochemistry. The organ izers of that meeting were extremely pleased to welcome a select group of scientists from the J Heyrovsky Institute of Physical Chemistry and Electrochemistry to the meeting, thus continuing a tradition of cooperation and friendship going back over ten years. The contributions of the visitors to the scientific content of the meeting were enthusiastically received and their participation in the informal and social activities can only have furthered the cause of cooperation and good will between our two countries.

Characterization of a Microfabricated Electrochemical Detector and Coupling with High Performance Liquid Chromatography

Characterization of a Microfabricated Electrochemical Detector and Coupling with High Performance Liquid Chromatography
Author: Evan T. Ogburn
Publisher:
Total Pages: 78
Release: 2009
Genre:
ISBN:

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A disposable micro-fabricated electrochemical cell has been developed, characterized with multiple electrochemical systems, and coupled with high performance liquid chromatography to form a high performance liquid chromatography electrochemical detection (HPLC-ED) system. The detection system consisted of the micro-fabricated electrochemical detector, a flow-cell and a fixture mounted with electrical connections leading from the detector to the potentiostat. The detector is easy to fabricate, inexpensive, and maintains a high performance level which makes it a practical choice for electrochemical detection. The simplicity of the fabrication process for this detector allows it to be used as a disposable device that can be replaced easily if its performance degrades. Parameters for the optimization of the performance were studied in a three-electrode system with a special focus on HPLC-ED, using ascorbic acid, acetaminophen, and potassium ferricyanide as model compounds. A separation of three pharmaceutical compounds, dextrorphan, levallorphan, and acetaminophen was also performed in order to demonstrate the performance of the novel detector in comparison to commercially available macro electrochemical detectors. It was determined that the micro-fabricated detector's performance was comparable to traditional non-disposable electrodes in these systems, especially HPLC-ED, which was the system of focus. The calibration curves constructed for each model compound showed linearity (R2> 0.99), the limit of detection reached picomolar (