Lappeenranta University of Technology Faculty of Technology Degree Program in Environmental Technology Ville Luukkonen Determination of chlorophenols from water by solid phase microextraction – ion mobility spectrometry (SPME-IMS) Master’s thesis 2012 86 pages, 38 figures and 5 tables Examiners: Professor, D.Sc. (Tech.) Mika Sillanpää Lic.Sc. (Tech.) Simo Hammo Supervisor: M.Sc. Sanna Holopainen

A solid-phase microextraction (SPME) method has been developed for the quantification of polychlorinated biphenyls (PCBs) in water samples. Parameters such as sampling time, volume of water, volume of headspace, temperature, addition of salts, and agitation of the sample were studied. Because the time for reaching equilibrium between phases takes several hours or days, depending on the experime...

in this work, an environmentally friendly sample pre-treatment method, ultrasound assisted surfactant enhanced emulsification microextraction (uaseme) followed with spectrofluorimetry was performed for determination of oxadiazon residues in water samples. after the determination of the most suitable extraction solvent and its volume, other parameters such as type and concentration of surfactant...

(E,E)-alpha-Farnesene was extracted as the main component of the volatile fraction of male Viscum album L. Male and female flowers of V. album L. growing on different host trees were analysed by solid phase microextraction and by lipophilic extraction.

In the course of our continuing work on transformation of monoterpenes by microorganisms, the biotransformation of (+)- and (-)-carvone was carried out. The metabolites formed during microbial transformations were screened using a simple, rapid and efficient technique: Headspace-solid phase microextraction (SPME)/GC-MS. The results as well as the application of this technique are described.

Deep eutectic solvents (DES) as a new kind of green solvent were used for the first time to excellently extract phenolic compounds from model oil. It was also proved that DES could be used to extract other polar compounds from non-polar or weakly-polar solvents by liquid-phase microextraction.

Recent improvements in the detection of alkylated aromatic compounds from gasoline accelerants in arson debris use expensive GC-MS-MS instrumentation that is not available to most crime laboratories. This research project uses solid-phase microextraction (SPME), an inexpensive pre-concentration method, to achieve high sensitivities in the analysis of alkylated aromatic compounds.

In this study, hollow fiber liquid phase microextraction (HF-LPME) coupled with highperformanceliquid chromatography (HPLC) with UV detection was applied for preconcentrationand determination of Diclofenac sodium in biological fluids. Parameters affecting the extractionprocess including pH of donor phase and acceptor phase, type of extraction solvent, stirring rate,extraction time, and salt add...