Sharma Jagriti, Jindal Gitanjali
Department of Chemistry, UIS, Chandigarh University, Gharuan, Mohali, 140413, India.
J Fluoresc. 2025 Aug 15. doi: 10.1007/s10895-025-04448-y.
An effective recognition system for determination of mercury has been proposed using a combination of uracil and an aromatic aldehye. A chemosensor (1) possessing uracil has been synthesized at room temperature. When Hg ions were added gradually to the aqueous solution of chemosensor (1), the absorption spectrum showed a continuous decrease in the peak at 410 nm, accompanied by a slight red shift to 414 nm. Also, in fluorescence spectral studies of chemosensor (1) with the integration of different metal ions, emission intensity was increased only with Hg ions. In the presence of other metal ions such as Pb, Cu, Na, Cd, chemosensor (1) displayed a high level of specificity and selectivity for Hg ions. Additionally, it was demonstrated for the detection of Hg ions across various food samples such as turmeric, lemon, tomato and rice as well as water samples like river water, lake water and tap water. This chemosensor (1), hence, featured high sensitivity, real-time detection, multiplexing capability, ruggedness, and portability, suggesting its potential use as an on-site Hg probe.
已提出一种使用尿嘧啶和芳香醛组合来测定汞的有效识别系统。在室温下合成了一种含有尿嘧啶的化学传感器（1）。当将汞离子逐渐添加到化学传感器（1）的水溶液中时，吸收光谱显示410 nm处的峰持续下降，同时伴有轻微红移至414 nm。此外，在对化学传感器（1）与不同金属离子结合进行的荧光光谱研究中，仅汞离子会使发射强度增加。在存在铅、铜、钠、镉等其他金属离子的情况下，化学传感器（1）对汞离子表现出高度的特异性和选择性。此外，还证明了该传感器可用于检测各种食品样品（如姜黄、柠檬、番茄和大米）以及水样（如河水、湖水和自来水）中的汞离子。因此，这种化学传感器（1）具有高灵敏度、实时检测、多重检测能力、耐用性和便携性，表明其有作为现场汞探测器的潜在用途。
