Richard Sathiaraj, Shabashini Arivalagan, Panja Sumit Kumar, Chandra Nandi Ganesh
Department of Chemistry, National Institute of Technology-Tiruchirappalli, 620015, Tamil Nadu, India.
Tarsadia Institute of Chemical Science, Uka Tarsadia University, Maliba Campus, Gopal Vidyanagar, Bardoli, Mahuva Road, Surat-394350, Gujarat, India.
Anal Methods. 2024 May 30;16(21):3306-3310. doi: 10.1039/d4ay00812j.
A dihydroxy-substituted tricyanopyrroline-based near-infrared (NIR) colorimetric probe (TCP-34Hy) is developed for the effective detection of fluoride ions in aqueous medium in the presence of Ca ions. The naked-eye detection (drastic color change) selectively makes the NIR colorimetric sensor more efficient. The probe can detect fluoride ions from inorganic sources (NaF/KF) as well as organic sources (TBAF) in water. The water samples from different sources, such as tap, pond, river, and sewage, have been tested successfully for fluoride ion detection using the probe (TCP-34Hy). Investigations of different kinds of soil samples (clay soil, red soil, and river sand) after pre-treatment with NaF are also productive for detection of fluoride ions in water. The probe can also detect fluoride ions in toothpaste in aqueous medium. The role of Ca is discussed and explained on the basis of experimental results. Additionally, the probe (TCP-34Hy) shows high selectivity towards fluoride ion detection with a LOD of 2.3 μM (0.052 ppm) in aqueous medium.
开发了一种基于二羟基取代的三氰基吡咯啉的近红外（NIR）比色探针（TCP-34Hy），用于在钙离子存在下有效检测水性介质中的氟离子。肉眼检测（剧烈的颜色变化）使近红外比色传感器具有更高的选择性。该探针可以检测水中来自无机源（NaF/KF）以及有机源（TBAF）的氟离子。使用该探针（TCP-34Hy）已成功测试了来自不同水源（如自来水、池塘水、河水和污水）的水样中的氟离子。对用NaF预处理后的不同种类土壤样品（粘土、红土和河沙）进行的研究，对于检测水中的氟离子也很有成效。该探针还可以检测水性介质中牙膏中的氟离子。根据实验结果对钙离子的作用进行了讨论和解释。此外，该探针（TCP-34Hy）对氟离子检测具有高选择性，在水性介质中的检测限为2.3 μM（0.052 ppm）。
