Table of Contents
What is solid phase microextraction sampling?
SPME is a sampling technique based on absorption developed by Arthur and Pawliszyn. With SPME, the analytes are absorbed from the liquid or gaseous sample on to an absorbent coated fused silica fibre, which is part of the syringe needle, for a fixed time.
Who invented solid phase microextraction?
Prof. Janusz Pawliszyn
Solid phase microextraction (SPME) is one of several important sample preparation techniques. SPME, invented in early nineties by Prof. Janusz Pawliszyn from the University of Waterloo in Ontario, Canada, integrates sampling, extraction, concentration and sample introduction into a single step.
What is headspace solid phase microextraction HS SPME?
Headspace solid-phase microextraction (HS-SPME) is a versatile technique for sample preparation and analysis, which offers several advantages such as high sensitivity, good reproducibility, and a simple, quick, solvent-free preparation [12,13].
What is liquid phase microextraction?
Liquid-phase microextraction is a miniaturized form of traditional liquid–liquid extraction in which the extracting organic phase is limited to a few microliters for extraction of target analytes.
What is SPME fiber?
Solid phase microextraction (SPME) is an innovative and sensitive solvent-free sample preparation technology. Based on the principle of adsorption/absorption and desorption, SPME uses a coated fiber to concentrate volatile and semi-volatile compounds from a sample.
What is head space SPME?
Headspace-SPME, in which a coated fused silica fiber is used to trap and concentrate analytes from a static or dynamic headspace process, was developed in 1993 and has experienced the strongest growth in research interest over the past decade.
What is HF LPME?
Hollow fiber-based liquid-phase microextraction (HF-LPME) is a relatively new technique employed in analytical chemistry for sample pretreatment which offers more selectivity and sensitivity than any traditional extraction technique. The detection limit was 0.03 μg mL−1 of ibuprofen in the donor phase.
What is magnetic solid phase extraction?
Magnetic solid-phase extraction. Magnetic solid-phase extraction is a new procedure for the preconcentration of target analytes from large volumes based on the use of magnetic or magnetizable adsorbents .
What is phase extraction?
Solid-phase extraction ( SPE) is a sample preparation process by which compounds that are dissolved or suspended in a liquid mixture are separated from other compounds in the mixture according to their physical and chemical properties. Analytical laboratories use solid phase extraction to concentrate…
What is solid liquid extraction?
Solid-liquid extraction is a separation process based on the preferential dissolution of one or more of the components of a solid mixture in a liquid solvent.