Non-volatile analysis in fruits by laser resonant ionization spectrometry: application to resveratrol (3,5,4′-trihydroxystilbene) in grapes

C. Montero, J. M. Orea, M. Soledad Muñoz, R. F. M. Lobo, A. González Ureña

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A laser desorption (LD) coupled with resonance-enhanced multiphoton ionisation (REMPI) and time-of-flight mass spectrometry (TOFMS) technique for non-volatile trace analysis compounds is presented. Essential features are: (a) an enhanced desorption yield due to the mixing of metal powder with the analyte in the sample preparation, (b) a high resolution, great sensitivity and low detection limit due to laser resonant ionisation and mass spectrometry detection. Application to resveratrol content in grapes demonstrated the capability of the analytical method with a sensitivity of 0.2 pg per single laser shot and a detection limit of 5 ppb.

Original languageEnglish
Pages (from-to)601-605
Number of pages5
JournalApplied Physics B: Lasers and Optics
Volume71
Issue number4
DOIs
Publication statusPublished - 1 Jan 2000

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