Optical Sensor of Anionic Surfactants Using Solid-Phase Extraction with a Lactone-form Rhodamine B Membrane

  • MASADOME Takashi
    Department of Applied Chemistry, Faculty of Engineering, Shibaura Institute of Technology
  • AKATSU Motoo
    Department of Applied Chemistry, Faculty of Engineering, Shibaura Institute of Technology

Search this article

Abstract

An optical sensor for the detection of anionic surfactants was developed. The optical sensing membrane is a 2-nitrophenyloctyl ether-plasticized poly(vinyl chloride) membrane incorporating a lactone-form Rhodamine B (L-RB). The response of the optical membrane to anionic surfactants was a result of the ion-pair coextraction of an anionic surfactant and a proton into the PVC membrane. The L-RB forms an ion associate with the extracted anionic surfactant; simultaneously, the formed L-RB ion associate is accompanied by a spectral change. Namely, the extracted anionic surfactant changes the color of the membrane from light pink to dark pink (absorption maximum; 558 nm). The optical membrane responds to anionic surfactants, such as dodecylbenzenesulfonate, dodecylsulfate and di-2-ethylhexyl sulfosuccinate in the concentration range from 1 to 50 µM.

Journal

  • Analytical Sciences

    Analytical Sciences 24 (6), 809-812, 2008

    The Japan Society for Analytical Chemistry

Citations (2)*help

See more

References(40)*help

See more

Details 詳細情報について

Report a problem

Back to top