ABSTRACT
In sorptive tape extraction, a sorbent surface is used for molecular imprisonment and posterior instrument analysis. It is sorption-based sampling technique in which a flexible polydimethylsiloxane (PDMS) tape is used to recover analytes at the surface of a solid matrix by the direct contact as well as from the headspace in equilibrium with it. Solutes enriched on the inert PDMS material can be recovered either by solvent desorption or by thermo-desorption. A rapid and simple metabolomics-based procedure using sorptive tape-like extraction coupled with laser desorption ionization mass spectrometry (STELDI-MS) is described for the analysis of cannabinoids and additive contents of Cannabis sativa L. products. The STELDI-MS fingerprints of Cannabis sativa L. samples show important similarities. A combination of silica plate imprinting laser desorption/ionization mass spectrometry imaging was used for the simultaneous mycotoxin and phytoalexin identification in peanut skin and kernel.
