研究目的
Investigating the capability of a surface-plasmon-resonance-based sensor to detect polysaccharide molecules, such as Xanthan gum, in water desalination processes.
研究成果
The developed SPR sensor demonstrated a linear response to dissolved Xanthan gum concentrations up to 0.22 g/L, showcasing its potential for online water quality monitoring and bio-fouling detection in desalination plants. Further optimization could enhance its sensitivity and applicability.
研究不足
The sensitivity of the SPR sensor was less than 5 ppm, indicating potential areas for optimization to increase sensitivity. The study also highlighted the saturation of reflected optical power at higher Xanthan gum concentrations due to overcrowded ligand surfaces.
1：Experimental Design and Method Selection:
The study utilized a surface plasmon resonance (SPR) sensor with a gold nanothin-film chip attached with Concanavalin A (Con A) ligands to detect Xanthan gum concentrations.
2：Sample Selection and Data Sources:
Xanthan gum was dissolved in water at varying concentrations for detection.
3：List of Experimental Equipment and Materials:
A 1550 nm laser source, fibre optic circulator, fibre optic collimator, BK7 glass prism, gold nano-film sensor chip, Con A ligands, and an optical power meter were used.
4：Experimental Procedures and Operational Workflow:
The sensor's response to different Xanthan gum concentrations was measured by observing changes in reflected optical power.
5：Data Analysis Methods:
The change in reflected optical power was analyzed to determine the relationship with Xanthan gum concentration.
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