Author: Frederick A. DreischPublisher:
ISBN:
Category : Gas chromatography
Languages : en
Pages : 74
Book Description
Purge and Trap Analysis Using Fused Silica Capillary Column Gas Chromatography/mass Spectrometry
Author: Frederick A. DreischPublisher:
ISBN:
Category : Gas chromatography
Languages : en
Pages : 74
Book Description
Heated Purge and Trap Method Development and Testing
Author: S. V. LucasModern Practice of Gas Chromatography
Author: Robert L. Grob, PhDPublisher: John Wiley & Sons
ISBN: 047165115X
Category : Science
Languages : en
Pages : 1059
Book Description
The bible of gas chromatography-offering everything the professional and the novice need to know about running, maintaining, and interpreting the results from GC Analytical chemists, technicians, and scientists in allied disciplines have come to regard Modern Practice of Gas Chomatography as the standard reference in gas chromatography. In addition to serving as an invaluable reference for the experienced practitioner, this bestselling work provides the beginner with a solid understanding of gas chromatographic theory and basic techniques. This new Fourth Edition incorporates the most recent developments in the field, including entirely new chapters on gas chromatography/mass spectrometry (GC/MS); optimization of separations and computer assistance; high speed or fast gas chromatography; mobile phase requirements: gas system requirements and sample preparation techniques; qualitative and quantitative analysis by GC; updated information on detectors; validation and QA/QC of chromatographic methods; and useful hints for good gas chromatography. As in previous editions, contributing authors have been chosen for their expertise and active participation in their respective areas. Modern Practice of Gas Chromatography, Fourth Edition presents a well-rounded and comprehensive overview of the current state of this important technology, providing a practical reference that will greatly appeal to both experienced chomatographers and novices.
Direct Sample-to-Column Purging with Whole Column Cryotrapping (P/WCC) for the Determination of Volatile Organic Compounds in Water
Author: JF. PankowPublisher:
ISBN:
Category : Electron capture detector
Languages : en
Pages : 9
Book Description
Volatile organic compounds (VOCs) ranging from chloromethane to chlorinated benzenes can be determined simply and easily by the P/WCC method. In P/WCC, a sample is purged directly to a fused silica capillary column. During the purging, the column (e.g., 0.32 mm i.d. DB-624) is maintained under whole column cryotrapping conditions. A water trap which condenses water minimizes the transfer of water to the column. P/WCC provides for the quantitative transfer of even the most volatile analytes to the column. (In purge and trap, very volatile analytes can break through the trap and be lost.) The simplicity of P/WCC minimizes blank levels; WCC permits very high chromatographic efficiency. Applications involving detection by mass spectrometry (MS) and an electron capture detector (ECD) are discussed. When using an ECD in the analysis of a 5 mL sample volume, then for o-dichlorobenzene, 1,2,4-trichlorobenzene, and 1,2,4,5-tetrachlorobenzene, P/WCC will give detection limits of 0.01, 0.003, and 0.0006 ng/mL, respectively.
Gas Chromatography
Author: Peter KuschPublisher: BoD – Books on Demand
ISBN: 1838818650
Category : Science
Languages : en
Pages : 144
Book Description
Gas chromatography (GC) is one of the most important types of chromatography used in analytical chemistry for separating and analyzing chemical organic compounds. Today, gas chromatography is one of the most widespread investigation methods of instrumental analysis. This technique is used in the laboratories of chemical, petrochemical, and pharmaceutical industries, in research institutes, and also in clinical, environmental, and food and beverage analysis. This book is the outcome of contributions by experts in the field of gas chromatography and includes a short history of gas chromatography, an overview of derivatization methods and sample preparation techniques, a comprehensive study on pyrazole mass spectrometric fragmentation, and a GC/MS/MS method for the determination and quantification of pesticide residues in grape samples.
Water-resources Investigations Report
Author: Toxicological Profile for Xylenes
Author: Patty's Toxicology, 6 Volume Set
Author: Eula BinghamPublisher: John Wiley & Sons
ISBN: 0470410817
Category : Science
Languages : en
Pages : 5872
Book Description
Featuring the improved format used in the 5th edition, this updated set presents, in logical groupings, comprehensive toxicological data for industrial compounds, including CAS numbers, physical and chemical properties, exposure limits, and biological tolerance values for occupational exposures, making it essential for toxicologists and industrial hygienists. This edition has about 40% new authors who have brought a new and international perspective to interpreting industrial toxicology, and discusses new subjects such as nanotechnology, flavorings and the food industry, reactive chemical control to comprehensive chemical policy, metalworking fluids, and pharmaceuticals.
Handbook of Environmental Analysis
Author: Pradyot PatnaikPublisher: CRC Press
ISBN: 1498745628
Category : Nature
Languages : en
Pages : 661
Book Description
The Handbook will cover all aspects of environmental analysis and will examine the emergence of many new classes of pollutants in recent years. It will provide information on an array of topics from instrumentation, analytical techniques, and sample preparations to statistical calculations, chemical structures, and equations. It will present the tools and techniques required to measure a wide range of toxic pollutants in our environment. It will be fully revised throughout, and will add four new chapters (Microbial Analysis, Chlorophyll, Chlorine, Chloramines and Chlorine Dioxide, and Derivatization Reactions in Environmental Analysis).
Handbook of Alcoholic Beverages, 2 Volume Set
Author: Alan J. BuglassPublisher: John Wiley & Sons
ISBN: 0470512024
Category : Technology & Engineering
Languages : en
Pages : 1207
Book Description
HANDBOOK OF ALCOHOLIC BEVERAGES A comprehensive two-volume set that describes the science and technology involved in the production and analysis of alcoholic beverages HANDBOOK OF ALCOHOLIC BEVERAGES Technical, Analytical and Nutritional Aspects At the heart of all alcoholic beverages is the process of fermentation, particularly alcoholic fermentation, whereby sugars are converted to ethanol and many other minor products. The Handbook of Alcoholic Beverages tracks the major fermentation process, and the major chemical, physical and technical processes that accompany the production of the world’s most familiar alcoholic drinks. Indigenous beverages and small-scale production are also covered to a significant extent. The overall approach is multidisciplinary, reflecting the true nature of the subject. Thus, aspects of biochemistry, biology (including microbiology), chemistry, health science, nutrition, physics and technology are all necessarily involved, but the emphasis is on chemistry in many areas of the book. Emphasis is also on more recent developments and innovations, but there is sufficient background for less experienced readers. The approach is unified, in that although different beverages are dealt with in different chapters, there is extensive cross-referencing and comparison between the subjects of each chapter. Appropriate for food professionals working in the development and manufacture of alcohol-based drinks, as well as academic and industrial researchers involved in the development of testing methods for the analysis and regulation of alcohol in the drinks industry. Divided into five parts, this comprehensive two-volume work presents: INTRODUCTION, BACKGROUND AND HISTORY: a simple introduction to the history and development of alcohol and some recent trends and developments. FERMENTED BEVERAGES: BEERS, CIDERS, WINES AND RELATED DRINKS: the latest innovations and aspects of the different fermentation processes used in beer, wine, cider, liqueur wines, fruit wines, low-alcohol and related beverages. SPIRITS: covers distillation methods and stills used in the production of whisky, cereal- and cane-based spirits, brandy, fruit spirits and liqueurs. ANALYTICAL METHODS: covering the monitoring of processes in the production of alcoholic beverages, as well as sample preparation, chromatographic, spectroscopic, electrochemical, physical, sensory and organoleptic methods of analysis. NUTRITION AND HEALTH ASPECTS RELATING TO ALCOHOLIC BEVERAGES: includes a discussion on nutritional aspects, both macro- and micro-nutrients, of alcoholic beverages, their ingestion, absorption and catabolism, the health consequences of alcohol, and details of the additives and residues within the various beverages and their raw materials.