Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Thanyaburi, 12110, Pathum Thani, Thailand.
King Mongkut's Institute of Technology Ladkrabang, Prince of Chumphon, Chumphon, 86160, Pathiu, Thailand.
Anal Bioanal Chem. 2023 Aug;415(19):4703-4712. doi: 10.1007/s00216-023-04754-z. Epub 2023 May 24.
A new rhodamine B derivative (RDB) was synthesized and utilized for the colorimetric detection of copper ions (Cu). This chemosensor utilized a paper strip as a support and a smartphone as a detector for on-site quantitative detection of Cu in water samples. Silica nanoparticles (SiNPs) were investigated as the modifier nanoparticles to achieve uniform color on the paper strip and showed a color response 1.9-fold higher than the one without SiNPs. The RDB chemosensor-based paper strip provided high selectivity toward Cu with a detection limit of 0.7 mg/L, and the working concentrations for Cu ranged from 1 to 17 mg/L. Parallel analyses of eight drinking water samples were conducted by inductively coupled plasma optical emission spectroscopy. The results were in good agreement, indicating the practical reliability of the established method with a short assay time and high selectivity. These indicate its great potential for on-site detection of Cu.
一种新的罗丹明 B 衍生物 (RDB) 被合成，并用于比色检测铜离子 (Cu)。该化学传感器使用纸条作为支撑物，智能手机作为探测器，用于现场定量检测水样中的 Cu。研究了纳米二氧化硅 (SiNPs) 作为修饰纳米颗粒，以实现纸条上颜色的均匀性，并且比没有 SiNPs 的颜色响应高 1.9 倍。基于 RDB 化学传感器的纸条对 Cu 具有高选择性，检测限为 0.7 mg/L，Cu 的工作浓度范围为 1 至 17 mg/L。通过电感耦合等离子体发射光谱法对 8 个饮用水样品进行平行分析。结果吻合良好，表明该方法具有分析时间短、选择性高的实际可靠性。这表明它在现场检测 Cu 方面具有很大的潜力。
