评估用于监测鳞片沉积的反射式光纤表面等离子体共振传感器。

IF 1.8 4区 化学 Q3 CHEMISTRY, ANALYTICAL Analytical Sciences Pub Date : 2024-09-04 DOI:10.1007/s44211-024-00653-0
Takuya Okazaki, Miku Yokose, Yudai Ishii, Akira Ueda, Hideki Kuramitz, Tomoaki Watanabe
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引用次数: 0

摘要

对一种反射式表面等离子体共振(SPR)传感器进行了评估,以实时监测鳞片沉积情况。该传感器由一根光纤组成,传感区域镀金尖端处仅有 5 毫米。使用 Na2SiO3 溶液评估了二氧化硅生长对传感器响应的影响。传感器对二氧化硅的灵敏度为 1.6 ± 0.3 nm,每浸泡一次 1000 mg/L(以 SiO2 计)的溶液,温度为 85 °C,亚速风干,SPR 峰值移动显示了这一点。用石英晶体微天平法测量了沉积在金表面的二氧化硅量,得出二氧化硅质量对 SPR 的灵敏度为 0.089 nm/ng。SPR 传感器的检测限 (3σ) 为 17 ng,对应无定形二氧化硅的厚度为 2.5 nm。在隅川地热发电厂取样的地热盐水中对 SPR 传感器进行了测试,观察到明显的 SPR 偏移,这表明 SPR 传感器在水垢监测方面非常有效。
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Evaluation of reflective fiber-optic surface plasmon resonance sensor for monitoring scale deposition.

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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来源期刊
Analytical Sciences
Analytical Sciences 化学-分析化学
CiteScore
2.90
自引率
18.80%
发文量
232
审稿时长
1 months
期刊介绍: Analytical Sciences is an international journal published monthly by The Japan Society for Analytical Chemistry. The journal publishes papers on all aspects of the theory and practice of analytical sciences, including fundamental and applied, inorganic and organic, wet chemical and instrumental methods. This publication is supported in part by the Grant-in-Aid for Publication of Scientific Research Result of the Japanese Ministry of Education, Culture, Sports, Science and Technology.
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