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Identifier

000358046

Title

Μέθοδος προσδιορισμού των μονοτερπενίων στην ατρμόσφαιρα

Alternative Title

Determination of monoterpenes in the atmosphere

Author

Πακιουφάκη, Βασίλεια Νικολάου

Thesis advisor

Μιχαλόπουλος, Νικόλαος

Abstract

The terpenes are the largest group of secondary metabolites and they are organic compounds mainly of biogenic origin. These compounds can, even at low concentrations, play an important role in atmospheric chemistry, both locally and globally, as they rapidly react with hydroxyl radicals and ozone, influencing thus the oxidation capacity of the atmosphere. In addition they contribute to photochemical ozone formation and secondary organic aerosols (SOA) production. In this study, we present an analytical technique for the determination of terpenes namely monoterpenes in the atmosphere. In this method air is trapped in specific columns filled with a suitable sampling adsorbent (Tenax TA). The analysis of the columns is done by thermal desorption, while the separation and quantitative analysis of the compounds was carried out by gas chromatography (GC) equipped with Flame Photometric Detector ( FID). Various experiments were carried during the study to select the optimum parameters to achieve better separation of these compounds. Also parameters that control the reliability of this method, stability of samples and standard solutions, repeatability and detection limit of the technique were also examined.

Language

Greek

Subject

Monoterpenes

Μονοτερπένια

Issue date

2010-07-16

Collection

School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses

Type of Work--Post-graduate theses

Views

207

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