Hans-Joachim Hübschmann's Handbook of GC-MS: Fundamentals and Applications PDF

By Hans-Joachim Hübschmann

ISBN-10: 3527334742

ISBN-13: 9783527334742

The single finished reference in this renowned and quickly constructing procedure presents a close review, starting from basics to purposes, together with a bit at the overview of GC-MS analyses.
As such, it covers all features, together with the speculation and rules, in addition to a vast variety of real-life examples taken from laboratories in environmental, foodstuff, pharmaceutical and scientific research. It additionally includes a word list of roughly three hundred phrases and a substance index that allows discovering a selected software.
For this new version the paintings has been now prolonged to 2 volumes, reflecting the newest advancements within the method and similar instrumentation, whereas additionally incorporating a number of new examples of purposes in lots of fields.
the 1st variations have been rather well bought, making this guide essential in all analytical laboratories utilizing GC-MS.

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Extra resources for Handbook of GC-MS: Fundamentals and Applications

Example text

A regular programmed temperature vaporizer (PTV) with a packed insert liner and a solvent vapor vent valve, or an on-column injector with retention gap and solvent vapour exit can be used. Conventional liquid extraction techniques can be replaced with this setup completely and run fully automated for a large sample series. , 2007). Eluents applied for the online clean-up need to be compatible with GC as typical for normal phase LC (reversed phase separations need fraction collection and solvent exchange).

Sequence: 1. Heat sample at a precise temperature over a set period of time. 2. Pressurize with carrier gas. 3. Fill the sample loop. 4. Inject to GC by switching the six-port valve. 1 Sample Preparation (P&T-GC). This technique is now frequently used to detect residues of volatile organic compounds in the environment and in the analysis of liquid and solid foodstuffs. In particular, the coupling with GC-MS systems allows its use as a multi-component process for the automatic analysis of a large series of samples.

The purge efficiency has a direct effect on the percentage recovery (the quantity of analyte reaching the detector). Control of Purge Gas Pressure during the Purge Phase The adsorption and chromatographic separation of volatile halogenated hydrocarbons is improved significantly by regulating the pressure of the purge gas during the purge phase. By additional back pressure control during this phase, a very sharp adsorption band is formed in the trap, from which, in particular, the highly volatile components profit, since a broader distribution does not occur.

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Handbook of GC-MS: Fundamentals and Applications by Hans-Joachim Hübschmann

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