On-line Coupling of a Flow-Through Sensor to a Supercritical Fluid Extractor

  1. Tena, M.T. 1
  2. De Castro, M.D.L. 1
  3. Valcárcel, M. 1
  1. 1 Universidad de Córdoba
    info

    Universidad de Córdoba

    Córdoba, España

    ROR https://ror.org/05yc77b46

Revista:
Industrial and Engineering Chemistry. Analytical Chemistry.

ISSN: 0003-2700

Año de publicación: 1995

Volumen: 67

Número: 6

Páginas: 1054-1059

Tipo: Artículo

SCOPUS: 2-s2.0-11944272506 GOOGLE SCHOLAR

Otras publicaciones en: Industrial and Engineering Chemistry. Analytical Chemistry.

Repositorio institucional: lock_openAcceso abierto Editor

Resumen

A new approach to detection in supercritical fluid extraction (SFE) by use of a continuous-flow manifold including a flow-through sensor connected to the SFE collector is presented. The coupled system allows continuous derivatization and monitoring of extracted analytes and was used to develop a method for the determination of sulfoquinoxaline in solid foodstuffs. The proposed method features a linear determination range from 10 to 1000 ng of the analyte and an RSD smaller than 5%. It was applied to the analyses of spiked feedstuffs, lyophilized milk, corn, wheat, and oats samples with excellent results in all instances (mean recovery and RSD of 95.3% and 7.5%, respectively).