化学
检出限
铜
选择性
离子
肉眼
比色法
溶解度
色谱法
核化学
有机化学
催化作用
作者
Yang Liu,Liqiu Wang,Chenxiao Guo,Yajuan Hou
标识
DOI:10.1016/j.tetlet.2018.09.042
摘要
A colorimetric probe N,N’-bis(2-methoxy-ethyl)-2,3,3-trimethyl-3H-squaraine (MOESQ) with H2O solubility was synthesized to detect Cu2+. MOESQ exhibits good selectivity, high sensitivity and fast UV-Vis response toward Cu2+ over other competing ions in CH3CN. The detection limit of MOESQ for Cu2+ in CH3CN can reach 1.88 × 10−7 molL−1. By adsorbing MOESQ on the chromatography paper, a colorimetric test paper for Cu2+ was prepared, which could detect Cu2+ with the color change from blue to faint yellow even in the limit of detection concentration of 10−6 molL−1.
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