An economical luminescent film sensor for rapid detection of permanganate in water and Diquat in wheat, apple and Chinese cabbage

Jing-Jing Song; Yan Jin; Yi-Fan Guo; Xue-Qin Song

doi:10.1016/j.foodchem.2024.142525

An economical luminescent film sensor for rapid detection of permanganate in water and Diquat in wheat, apple and Chinese cabbage

Food Chem. 2024 Dec 16:468:142525. doi: 10.1016/j.foodchem.2024.142525. Online ahead of print.

Authors

Jing-Jing Song¹, Yan Jin¹, Yi-Fan Guo¹, Xue-Qin Song²

Affiliations

¹ School of Chemistry and Chemical Engineering, Key Laboratory of Opto-Electronic Technology and Intelligent Control (Ministry of Education), Lanzhou Jiaotong University, Lanzhou 730070, China.
² School of Chemistry and Chemical Engineering, Key Laboratory of Opto-Electronic Technology and Intelligent Control (Ministry of Education), Lanzhou Jiaotong University, Lanzhou 730070, China. Electronic address: songxq@mail.lzjtu.cn.

PMID: 39700806
DOI: 10.1016/j.foodchem.2024.142525

Abstract

Developing portable devices with reliable and swift luminescent responses for the detection of anions and pesticide residues are extremely expected for the foods safety and sequently the public health. To reduce cost and simplify the preparation and detection process, a new highly luminescent lanthanide species, [TbL(NO₃)₃]·0.5CH₃CN (TbL) based on an amido-armed open chain crown ether (L) was prepared and well characterized for the assembly of hybrid film, TbL@PMMA. Expectedly, TbL@PMMA exhibits excellent sensitivity and selectivity toward MnO₄^- and diquat (DQ) rapidly in water with quite low detection limits of 0.53 μM and 0.094 μM respectively. Moreover, TbL@PMMA can also be applicable to MnO₄^- detection in real water as well as DQ detection in wheat, apples, Chinese cabbage and real water effectively. The recognition mechanisms were explored in detail both experimentally and theoretically. Our research is valuable for the development of new sensing materials for application in food and environmental safety.

Keywords: Amide-armed open chain crown ether; Highly luminescent Tb(III) compound; Hydrostable PMMA-doped hybrid films; Permanganate and diquat detection.