In the last years, liquid-phase microextraction techniques have received an increased attention [1].
Among them, single-drop microextraction (SDME) [2], has grown to currently become one of the most successful sample preparation techniques, mainly due to the prospective high enrichment factors achieved as a result of the great reduction of the acceptor-to-donor phase ratio.
Headspace single-drop microextraction (HS-SDME) [3] is considered the most appropriate SDME mode for the extraction of volatile and/or semivolatile analytes as well as volatile forms after derivatization.
HS-SDME provides an efficient sample clean-up, since non-volatile compounds would not be extracted in the drop.
Moreover, matrix is not an issue when HS-SDME is used, given that the drop is exposed to the headspace above the sample, unlike direct-SDME, where the drop is immersed into the stirred aqueous sample.
In the last years, liquid-phase microextraction techniques have received an increased attention [1]. Among them, single-drop microextraction (SDME) [2], has grown to currently become one of the most successful sample preparation techniques, mainly due to the prospective high enrichment factors achieved as a result of the great reduction of the acceptor-to-donor phase ratio.Headspace single-drop microextraction (HS-SDME) [3] is considered the most appropriate SDME mode for the extraction of volatile and/or semivolatile analytes as well as volatile forms after derivatization. HS-SDME provides an efficient sample clean-up, since non-volatile compounds would not be extracted in the drop. Moreover, matrix is not an issue when HS-SDME is used, given that the drop is exposed to the headspace above the sample, unlike direct-SDME, where the drop is immersed into the stirred aqueous sample.
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