利用 Tb3+ 光致发光检测水中氟化物的灵敏纸基传感器

IF 3.5 Q2 CHEMISTRY, ANALYTICAL
Pankaj Kumar Chaturvedi and Uday Maitra
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引用次数: 0

摘要

氟是维持骨骼和牙齿健康的重要微量元素,但摄入量过高会导致肾炎、牙齿/骨骼氟中毒等。世界上许多干旱地区的氟含量高于世界卫生组织规定的 1.5 ppm 许可限值,因此需要一种简单的氟检测方案。我们采用了氟触发脱硅策略,在 TbCh 凝胶基质中释放敏化剂并增强 Tb3+ 发光。在优化的检测条件下,亲敏剂表现出选择性反应,检测限为 27 ppb,远低于世界卫生组织的允许限值。我们还将凝胶固定在纸盘上,检测实际样品(如牙膏、地下水)中的氟,并使用标准 ISE 方法验证了结果。这些令人鼓舞的结果表明,非专业用户可以在资源有限的地区采用该方法进行质量控制分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A sensitive paper-based sensor for fluoride detection in water using Tb3+ photoluminescence†

A sensitive paper-based sensor for fluoride detection in water using Tb3+ photoluminescence†

Fluoride is a vital trace mineral for healthy bones and teeth, but a higher intake can lead to nephrolithiasis, dental/skeletal fluorosis, etc. Many dry regions worldwide contain higher fluoride than the WHO permissible limit of 1.5 ppm, necessitating a simple fluoride detection protocol. We adopted a fluoride-triggered desilylation strategy, which releases a sensitizer and enhances Tb3+ luminescence in a TbCh gel matrix. Under the optimized assaying conditions, the pro-sensitizer exhibited a selective response with a detection limit of 27 ppb, well below the WHO permissible limit. We also immobilized the gels on paper discs to detect fluoride from real-life samples (e.g., toothpaste, groundwater), and the results were validated using the standard ISE method. The promising results suggest nonexpert users adapting the protocol in resource-limited areas to provide quality control analysis.

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CiteScore
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