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 are microextraction techniques?
Microextraction is defined as an extraction technique where the volume of the extracting phase is very small in relation to the volume of the sample, and extraction of analytes is not exhaustive.
What is LPME?
Liquid-Phase Microextraction (LPME) is a methodology that was developed by miniaturising Liquid–Liquid Extraction (LLE), greatly reducing the volume of solvent to just a few microlitres.
How is liquid phase microextraction different from classical methods?
Classical methods of extraction consume large volumes of hazardous solvents and other reagents and are not in line with the recent emergence of green analytical chemistry. Liquid-phase microextraction is a miniaturized version of classical liquid–liquid extraction and is characterized by the minimum consumption of solvents.
How is HF-LPME used in liquid phase microextraction?
HF-LPME involves the use of a hollow fiber as extraction device, typically of polypropylene, containing the extraction solvent, which is then placed in contact with the aqueous sample [148]. This way the extraction solvent is protected from the large particles possibly present in the aqueous sample (donor phase) while applying high stirring ratios.
What is the use of single drop microextraction?
After its introduction just over twenty years ago, single-drop microextraction (SDME) became a widely applied solvent-based microextraction procedure as a practical sample preparation tool in support of chemical and biological, food, pharmaceutical, clinical and forensic analysis.
Which is an example of a microextraction technique?
Examples of microextraction techniques include single-drop microextraction (SDME) and dispersive liquid-liquid microextraction (DLLME). SDME uses microliters of extraction solvent that is suspended as a drop from the tip of a microsyringe needle into a liquid or vapor phase containing the analyte.