Gas Chromatography in Plant Science, Wine Technology, Toxicology & Some Specific Applications, Federico Noguerra

Автор: Adrianna Coty
Название: Applications of Gas Chromatography
ISBN: 1681172623 ISBN-13(EAN): 9781681172620
Издательство: Gazelle Book Services
Рейтинг:
Цена: 217350.00 T
Наличие на складе: Невозможна поставка.
Описание: Gas chromatography is a term used to describe the group of analytical separation techniques used to analyse volatile substances in the gas phase. In gas chromatography, the components of a sample are dissolved in a solvent and vaporised in order to separate the analyses by distributing the sample between two phases: a stationary phase and a mobile phase. The mobile phase is a chemically inert gas that serves to carry the molecules of the analyse through the heated column. Gas chromatography is one of the sole forms of chromatography that does not utilise the mobile phase for interacting with the analyse. The stationary phase is either a solid adsorbent, termed gas-solid chromatography (GSC), or a liquid on an inert support, termed gas-liquid chromatography (GLC). Helium remains the most commonly used carrier gas in about 90% of instruments although hydrogen is preferred for improved separations. This inert gas goes through a glass column packed with silica that is coated with a liquid. Materials that are less soluble in the liquid will increase the result faster than the material with greater solubility. The purpose of this book is to provide a better understanding on its separation and measurement techniques and its application. Since chromatography techniques are separating and analysing methods, this book will help other researchers and young scientists to choose a suitable chromatography technique. Furthermore, this book illustrates the newest challenges in this area. This valuable book aims to provide a connection between various chromatography techniques and different processes.

Автор: Michael H. Gordon
Название: Principles and Applications of Gas Chromatography in Food Analysis
ISBN: 1461280249 ISBN-13(EAN): 9781461280248
Издательство: Springer
Рейтинг:
Цена: 81050.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Stricter control over additives in food and concern about the effects of contamination of food by industrial and agricultural chemicals are among the developments which are leading to an increasing emphasis on detailed and accurate analysis of food.