pp. 99-108
S&M905 Research Paper https://doi.org/10.18494/SAM.2013.797 Published: February 28, 2013 Immobilization of Tetrabutyl Thiuram Disulfide in Chitosan Thin Film for Sensing Zinc Ion Using Surface Plasmon Resonance Spectroscopy [PDF] Yap Wing Fen, W. Mahmood Mat Yunus and Zainal Abidin Talib (Received July 28, 2011; Accepted November 28, 2011) Keywords: surface plasmon resonance, tetrabutyl thiuram disulfide, chitosan, zinc ion
Tetrabutyl thiuram disulfide (TBTDS) immobilized in chitosan thin film has been studied as a sensor element for zinc ion, Zn2+, using surface plasmon resonance (SPR). The TBTDS-immobilized chitosan thin film, which acts as an active layer, was coated on a gold film by spin coating. Zn2+ can be detected by measuring the SPR signal when TBTDS-immobilized chitosan thin film contacts with Zn2+ in solution. The sensor produced a linear response for Zn2+ ranging from 0.1 to 1 ppm with a sensitivity of 0.0317° ppm−1. Using immobilized TBTDS as an active layer, the Zn2+ can also be selectively detected when present in mixtures of heavy metal ions.
Corresponding author: Yap Wing FenCite this article Yap Wing Fen, W. Mahmood Mat Yunus and Zainal Abidin Talib, Immobilization of Tetrabutyl Thiuram Disulfide in Chitosan Thin Film for Sensing Zinc Ion Using Surface Plasmon Resonance Spectroscopy, Sens. Mater., Vol. 25, No. 2, 2013, p. 99-108. |