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<p>In today’s demanding environment, the need for advanced fluorosensors capable of detecting various metal ions, especially aluminum (Al³⁺), which is common in industrial processes and environmental monitoring, is growing. To address this need, we have engineered a highly sensitive fluorescent probe, <b>MSS</b>, which exhibits distinctive greenish-yellow fluorescence specifically in the presence of Al³⁺ ions when illuminated with a 365&#xa0;nm UV lamp in aqueous medium and has been employed for the detection of picric acid. The Job’s plot analysis confirmed a 1:1 stoichiometric relationship between <b>MSS</b> and Al³⁺ ions. The limits of detection (LOD) and quantification (LOQ) are in the µM range. Moreover, we have developed a practical paper-strip-based test kit for on-site cascade detection of Al³⁺ ions and picric acid, enabling quick, efficient monitoring of aluminum levels across diverse environments. The successful detection of Al³⁺ in soil samples further validates <b>MSS</b> as a promising tool for environmental analysis and monitoring.</p>

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A Water-soluble Turn-on Fluorescent Probe of Aluminum Ions Based On Quinoline Derivative and Its Implication for the Detection of 2,4,6-Trinitrophenol

  • 期刊论文

  • 发表日期：

    2026年7月22日

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  • Upika Darnal,
  • Sudhir Kumar Das

摘要

In today’s demanding environment, the need for advanced fluorosensors capable of detecting various metal ions, especially aluminum (Al³⁺), which is common in industrial processes and environmental monitoring, is growing. To address this need, we have engineered a highly sensitive fluorescent probe, MSS, which exhibits distinctive greenish-yellow fluorescence specifically in the presence of Al³⁺ ions when illuminated with a 365 nm UV lamp in aqueous medium and has been employed for the detection of picric acid. The Job’s plot analysis confirmed a 1:1 stoichiometric relationship between MSS and Al³⁺ ions. The limits of detection (LOD) and quantification (LOQ) are in the µM range. Moreover, we have developed a practical paper-strip-based test kit for on-site cascade detection of Al³⁺ ions and picric acid, enabling quick, efficient monitoring of aluminum levels across diverse environments. The successful detection of Al³⁺ in soil samples further validates MSS as a promising tool for environmental analysis and monitoring.