Basic principles and applications of liquid phase microextraction techniques
Palavras-chave: Microextraction, trace analysis, LPME, micro, devices.
Resumo: The main liquid phase techniques for sample preparation have been explored. Among them, two phases devices such as single drop microextraction (SDME) and hollow fibre liquid phase microextraction (HFLPME), either in head space or total immersion modes, both static and dynamic ones; dispersive liquid phase microextraction (DLPME) and microextraction by demixture have been explained. Also three liquid phases using the donor-acceptor interactions, either spontaneous or electro-assisted using a membrane, were reviewed and explained. Several applications as example of each technique will illustrate the advantages and drawbacks of each technique.
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