Artículos de revistas
Coupling of dynamic headspace sampling and solid phase microextraction
Registro en:
Chromatographia. Vieweg, v. 60, n. 41984, n. 687, n. 691, 2004.
0009-5893
WOS:000225815500013
10.1365/s10337-004-0446-y
Autor
Silva, RC
Aquiar, PMS
Augusto, F
Institución
Resumen
A simple lob-made apparatus allowing the use of a SPME fiber as sorptive device for isolation of analytes from varied samples using dynamic headspace sampling (DHS) is presented here. The principal parameters for the operation of this device - the extraction time and the flow of purging gas - were studied using aqueous test solutions of volatile and semi-volatile analytes. Compared to conventional HS-SPME, DHS-SPME provided a substantial reduction in the extraction time with linearity, accuracy and precision comparable to the conventional approach. For a complex matrix such as mango pulp, the extraction efficiency of volatiles using The DHS-SPME combination was up to six times higher than that of conventional HS-SPME. 60 41984 687 691