Słowa kluczowe Pomoc
- mikroekstrakcja do fazy stacjonarnej
- sample preparation
- membranowa mikroekstrakcja do fazy stacjonarnej
- przygotowanie wlokna ekstrakcyjnego
- solid-phase microextraction
- techniki przygotowania probek do analizy
- volatile organic compounds
- anality polarne
- ekstrakcja do fazy stacjonarnej
- extraction techniques
Determination of analytes at trace levels in complex samples (e.g. biological or contaminated water or soils) are often required for the environmental assessment and monitoring as well as for scientific research in the field of environmental pollution. A limited number of analytical techniques are sensitive enough for the direct determination of trace components in samples and, because of that, a preliminary step of the analyte...
Determination of volatile organic compounds in water samples using membrane-solid phase microextraction (M-SPME) (headspace version)
The results of a study on the use of membrane-solid phase microextraction (M-SPME) for sampling volatile organic compounds (VOCs) from the headspace above the liquid medium are presented. The sampled VOCs were subsequently quantified by gas chromatography (GC). Two systems were compared in this study, i.e. a novel two-phase sorption system (M-SPME), and a commercial fibre. Headspace sampling using SPME was optimized with respect...
Evaluation of polycaprolactone as a new sorbent coating for determination of polar organic compounds in water samples using membrane–SPME
Commercially available solid-phase microextraction fibers used for isolation of polar analytes are based on the adsorption phenomenon. In consequence, typical limitations bonded with analytes displacement and matrix effects are very frequent. In the present study, alternative solution is described. Polycaprolactone (PCL) was used for the first time as sorbent to isolate polar organic compounds from water samples using the membrane–solid-phase...
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