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1. WO2003019149 - PROCEDE ET APPAREIL DE PREPARATION D'UN ECHANTILLON PAR MICROEXTRACTION SUR PHASE SOLIDE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

1. A method for performing sample preparation of a liquid sample using solid phase microextraction comprising the steps of:
- drawing a liquid sample comprising analytes into a syringe (2) having a syringe barrel (4) provided with a solid phase material (10),
- passing the liquid sample through the solid phase material (10) such that the analytes in the sample are adsorbed to the solid phase material; and
- eluting the analytes with a liquid solvent directly into the injector (22) of an anlysing instrument (20).

2. Method according to claim 1 wherein the sample is drawn into the syringe (2) using an autosampler (12).

3. Method according to claim 1 wherein the solid phase material (10) is washed prior to the eluting step.

4. Method according to claim 1 wherein the analytes are eluted with an organic solvent.

5. An apparatus for performing sample preparation of a liquid sample using solid phase microextraction comprising a syringe (2) having a syringe barrel (4) with a plunger (6) slidable within the barrel and a hollow needle (8) extending from the barrel through which needle the liquid sample is drawn into the syringe barrel characterised in that a solid phase material (10, 11, 13) is provided in the syringe barrel (4) to be contacted by the liquid sample drawn into the syringe (2).

6. An apparatus according to claim 5 wherein the solid phase material is provided as a porous plug (10) inside the syringe barrel (4).

7. An apparatus according to claim 5 wherein the solid phase material is provided as a coating (11) on the inside of the syringe barrel wall.

8. An apparatus according to claim 5 wherein the solid phase material is provided as a coating on a filter (13) provided inside the syringe barrel (4).

. An apparatus according to any of claims 5 to 8 wherein the solid phase material (10, 11, 13) is made of a solid polymer.

10. An apparatus according to any of claims 5 to 8 wherein the solid phase material (10, 11, 13) is made of a liquid polymer.