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Evaluation of reflective fiber-optic surface plasmon resonance sensor for monitoring scale deposition.
Okazaki, Takuya; Yokose, Miku; Ishii, Yudai; Ueda, Akira; Kuramitz, Hideki; Watanabe, Tomoaki.
Afiliación
  • Okazaki T; Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1Tama-ku, HigashimitaKawasaki, Kanagawa, 214-8571, Japan. okazaki@meiji.ac.jp.
  • Yokose M; Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1Tama-ku, HigashimitaKawasaki, Kanagawa, 214-8571, Japan.
  • Ishii Y; Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1Tama-ku, HigashimitaKawasaki, Kanagawa, 214-8571, Japan.
  • Ueda A; Department of Environmental Biology and Chemistry, Faculty of Science, Academic Assembly, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan.
  • Kuramitz H; Department of Environmental Biology and Chemistry, Faculty of Science, Academic Assembly, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan.
  • Watanabe T; Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1Tama-ku, HigashimitaKawasaki, Kanagawa, 214-8571, Japan. tomowata@meiji.ac.jp.
Anal Sci ; 2024 Sep 04.
Article en En | MEDLINE | ID: mdl-39230826
ABSTRACT
A reflective surface plasmon resonance (SPR) sensor was evaluated for real-time monitoring of scale deposition. The sensor consists of an optical fiber, only 5 mm at the gold-coated tip of the sensing area. The effect of silica growth on the sensor response was evaluated using a Na2SiO3 solution. The sensitivity of the sensor to silica was 1.6 ± 0.3 nm per one immersion in the solution of 1000 mg/L (as SiO2) at 85 °C and subsequnt air drying, as indicated by the SPR peak shift. The amount of silica deposited on the gold surface was measured by the quartz crystal microbalance method, and the SPR sensitivity of 0.089 nm/ng to silica mass was obtained. The detection limit (3σ) of the SPR sensor was 17 ng, corresponding to a thickness of 2.5 nm for amorphous silica. The SPR sensor was tested in geothermal brine sampled at the Sumikawa Geothermal Power Plant, where a clear SPR shift was observed, suggesting the effectiveness of the SPR sensor for scale monitoring.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anal Sci Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anal Sci Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Suiza