Polypyrrole/graphene oxide nanocomposite-coated fiber located in a capillary tube reinforced by a vacuum system for assessment of oxidative stability of edible oils

摘要

A vacuum-assisted coated fiber located in a capillary tube system for sampling and delivering materials to an analytical device and a method for sampling analytes is disclosed. A sorbent comprising polypyrrole/graphene oxide is coated on a fiber inserted within an interior space of the capillary tube to entrap an analyte within a sample. The vacuum-assisted coated fiber located in a capillary tube device also includes a vacuum device configured to vacuum the extraction vial. This may improve the extraction of the analytes vapors from the sample, matrix to the sorbent bed.