Troubleshooting Lc Systems
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Troubleshooting LC Systems
Author: John W. Dolan
language: en
Publisher: Springer Science & Business Media
Release Date: 1989-03-01
Over the last 15 years, high-performance liquid chromatogra phy (LC) has made the transition from an instrument used only by experts in research labs to a tool used for routine applications by relatively unskilled workers. With this transition have come in instrumentation and column technology. In major advances the past, the operator had to be a jack-of-all-trades, with a screw driver, soldering iron, and various wrenches as constant compan ions in the LC lab. Today, many instruments contain micropro cessors as powerful as those of mainframe computers of earlier days. With this technology has come a variety of self-diagnostic tools that allow the LC system to locate many of its own prob lems. Traditionally, well-honed LC troubleshooting skills have been a result of years of work at the bench. Today the LC system itself often can do a better job of troubleshooting than the operator can. Yet many of the problems of the past are still the major problems of today: air bubbles, check valves, detector lamps, and, of course, problems with the separation. An added pressure on the operator of today's LC system is that of productivity-the lab often cannot afford unnecessary downtime. This means that the operator has to be a troubleshooting expert, or has to have that expertise at his or her fingertips. The present book was written to provide this expertise in an easy-to-use format for users at all levels of experience.
High-Performance Liquid Chromatography of Peptides and Proteins
This book consists of a series of 82 precise, easy-to-read articles by internationally renowned scientists and emphasizes the practical approach to HPLC with minimal theory, although the underlying principles for peptide and protein separations are clearly expressed. All of the major modes of microbore, ultrafast and analytical HPLC are discussed, including size-exclusion, ion-exchange, reversed-phase, hydrophobic interaction, and affinity and immunoaffinity chromatography. A section on preparative HPLC, including displacement techniques, is also presented. Problem-solving approaches to the separation of various classes of biologically active peptides and proteins are thoroughly explored, while the importance of peptide standards for monitoring column performance and for optimizing separation conditions is emphasized. Several articles focus on the choice of the correct detection method (electrochemical, UV, fluorescence), as well as the need for a proper knowledge of approaches to column and instrument maintenance and trouble-shooting. A section on predictive approaches deals with both computer simulation of peptide separations and peptide structure. The book also includes complementary techniques to HPLC, as well as other useful applications of HPLC. It enables both novice and experienced chromatographers to realize the full potential of this extremely powerful technique, in the process making an important contribution to scientific literature.
Chromatographic Systems
Chromatographic Systems: Maintenance and Troubleshooting, Second Edition provides a clear and concise guide for chromatographic maintenance. This book covers troubleshooting and repair procedures that can be utilized by both experienced and inexperienced chemists and technicians to reduce instrument down-time. This edition is divided into two parts. Part I focuses on liquid chromatography, which consists of an introductory chapter on principles, techniques, and utility, followed by specific chapters devoted to the individual systems comprising the total liquid chromatographic makeup. Gas chromatography is emphasized in Part II, introducing the basic theory and analyzing the systematic progression through possible malfunctions in various parts of the gas chromatograph. This publication is a good source for chromatographers, scientists, chemists, and technicians interested in the maintenance and troubleshooting of chromatographic systems.