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Colorimetric probe for copper(II) ion detection based on cost-effective aminoquinoline derivative

文献类型： 外文期刊

作者： Wang, Yun 1 ; Wan, Weijie 2 ; Qiu, Suyan 2 ; Luo, Linguang 2 ; Li, Youguo 1 ; Guo, Longhua 3 ; Lin, Zhenyu 3 ; Chen, Guon 1 ;

作者机构： 1.Chengdu Univ Technol, Coll Earth Sci, Chengdu 610059, Sichuan, Peoples R China

2.Jiangxi Acad Agr Sci, Inst Qual & Safety & Stand Agr Prod Res, Nanchang 330200, Jiangxi, Peoples R China

3.Fuzhou Univ, Dept Chem, MOE Key Lab Anal & Detect Food Safety, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou 350002, Fujian, Peoples R China

期刊名称：ANALYTICAL METHODS （ 影响因子：2.896； 五年影响因子：2.716 ）

ISSN： 1759-9660

年卷期： 2017 年 9 卷 11 期

页码：

收录情况： SCI

摘要： A readily available aminoquinoline derivative (5-(quinolin-8-yliminol) pentanal, QYP) is used as a new cost-effective colorimetric probe for Cu2+ ion detection by forming a complex with a stoichiometry of 1 : 2. The QYP conjugated with Cu2+ ions induces a discernable color change from light yellow to red-brown in the solution, and the corresponding UV-Vis absorption shifts from 380 nm to 510 nm dramatically. The detection limit for Cu2+ ions is 2.0 mu M by the naked eye, approaching other previously reported colorimetric methods, and without tedious conditions. Other possible contaminated metal ions cause no significant interference to detecting Cu2+ ions with the proposed probe. The stability constant of the complex is estimated to be 7.87 x 10(10) M-2, which suggests the high stability of the conjugation of QYP with Cu2+ ions. Besides, it was successfully applied to assay Cu2+ ions in river water samples, indicating that the probe may become a great potential candidate in complex sample determination.

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