Scholarlink

<p>Hexavalent chromium (Cr⁶⁺) is a widespread environmental contaminant known for its high toxicity, mutagenicity, and carcinogenic potential. In the present work, a novel organic nanoparticle-based fluorescence probe was developed for the rapid and sensitive detection of Cr⁶⁺ ions. The sensing mechanism relies on the complexation between the organic nanoparticles and Cr⁶⁺ ions, which induces a significant fluorescence quenching at 530&#xa0;nm accompanied by a distinct coluor change from greenish-yellow to colourless. The fluorescence intensity exhibited a linear decrease with increasing Cr⁶⁺ concentration within the range of 0–100 µM, with a limit of detection (LOD) of 10.5 µM. Furthermore, the applicability of the developed probe was validated in real water and fruit juice samples, demonstrating its practical feasibility. The proposed sensor is cost-effective, eco-friendly, and solvent-free, offering a promising approach for the selective and sensitive detection of hexavalent chromium in environmental and food monitoring applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Photoinduced Electron Transfer-induced Fluorescent Turn-off Mechanism of 1,8-Naphthalimide-o-phenylenediamine for Selective Detection of Cr⁶⁺ Ions

  • 期刊论文

  • 发表日期：

    2026年5月22日

查看全文
  • Monika Bhattu,
  • Meenakshi Verma,
  • Roberto Acevedo,
  • Deepika Kathuria

摘要

Hexavalent chromium (Cr⁶⁺) is a widespread environmental contaminant known for its high toxicity, mutagenicity, and carcinogenic potential. In the present work, a novel organic nanoparticle-based fluorescence probe was developed for the rapid and sensitive detection of Cr⁶⁺ ions. The sensing mechanism relies on the complexation between the organic nanoparticles and Cr⁶⁺ ions, which induces a significant fluorescence quenching at 530 nm accompanied by a distinct coluor change from greenish-yellow to colourless. The fluorescence intensity exhibited a linear decrease with increasing Cr⁶⁺ concentration within the range of 0–100 µM, with a limit of detection (LOD) of 10.5 µM. Furthermore, the applicability of the developed probe was validated in real water and fruit juice samples, demonstrating its practical feasibility. The proposed sensor is cost-effective, eco-friendly, and solvent-free, offering a promising approach for the selective and sensitive detection of hexavalent chromium in environmental and food monitoring applications.