Elimination of Parasitic Signals Caused by Gas Bubbles by Integrating Separation and Detection in Continuous Flow Systems

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

    Universidad de Córdoba

    Córdoba, España

    ROR https://ror.org/05yc77b46

Revista:
Fresenius' Journal of Analytical Chemistry

ISSN: 0937-0633

Año de publicación: 1994

Volumen: 349

Número: 7

Páginas: 483-486

Tipo: Artículo

DOI: 10.1007/BF00323978 SCOPUS: 2-s2.0-34249763868 GOOGLE SCHOLAR

Otras publicaciones en: Fresenius' Journal of Analytical Chemistry

Resumen

A novel, additional advantages of flow-through chemical sensors based on the integration of adsorption process and photometric detection is presented. It consists of the avoidance of the well-known parasitic signals caused by gas (CO 2, SO 2, N 2) bubbles inserted or generated "in situ" in a continuous flow-manifold coupled on-line with a sensor. A systematic study of the experimental variables allows to establish the optimal conditions to achieve the complete disappearance of these undesirable signals without any electronic signal manipulation. This is realised by packing a solid material (C 18 bonded silica or SP Sephadex beads) into the flow-cell. © 1994 Springer-Verlag.