Kulkarni Rashmi M, Ranjana M, Ullal Namratha, Sunil Dhanya
Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
J Fluoresc. 2024 Aug 13. doi: 10.1007/s10895-024-03902-7.
Hydrogen sulfide (HS) is a colorless, foul smelling, toxic substance that can be found in water bodies and waste waters, especially in occupational susceptible environments, and can lead to harmful effects in humans at higher concentrations. An HS monitoring probe NNAP is synthesized, which displays pH-dependent electrochemical, colorimetric, and fluorescence responses. NNAP functions as a fluorometric sensor at pH 7.4, with a limit of detection (LOD) of 0.70 mM, and as a colorimetric sensor at pH 12, where visible color changes are discernible to the naked eye, with an LOD of 4.28 mM. Additionally, it demonstrates utility in electrochemical sensing at pH 2, with a LOD of 2.5 mM. Furthermore, NNAP-coated paper strips have been successfully utilized for real-time HS monitoring applications.
硫化氢（HS）是一种无色、有恶臭的有毒物质，可存在于水体和废水中，尤其是在职业易感环境中，高浓度时会对人体产生有害影响。合成了一种HS监测探针NNAP，它显示出pH依赖性的电化学、比色和荧光响应。NNAP在pH 7.4时作为荧光传感器起作用，检测限（LOD）为0.70 mM，在pH 12时作为比色传感器，肉眼可辨别明显的可见颜色变化，LOD为4.28 mM。此外，它在pH 2的电化学传感中也有应用，LOD为2.5 mM。此外，涂有NNAP的纸条已成功用于实时HS监测应用。
