Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7588960 | Food Chemistry | 2016 | 27 Pages |
Abstract
In this paper, a simple and sensitive fluorescent sensor for dichlorvos was first constructed based on carbon dots-Cu(II) system. These carbon dots were obtained by simple hydrothermal reaction of feather. The fluorescence of these carbon dots can be selectively quenched by Cu2+ ion. When acetylcholinesterase and acetylthiocholine were introduced into the system, thiocholine came into being, which can react with Cu2+ ion and restore the fluorescence of the system. The reaction mechanism between Cu2+ ion and thiocholine was confirmed by X-ray photoelectron spectroscopy. As one kind of acetylcholinesterase inhibitor, organophosphorus pesticides can be detected based on this sensing system. As an example of organophosphorus pesticides, dichlorvos was detected with a linear range of 6.0Â ÃÂ 10â9-6.0Â ÃÂ 10â8Â M. This sensing system has been successfully used for the analysis of cabbage and fruit juice samples.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Juying Hou, Guangjuan Dong, Zhengbin Tian, Jiutian Lu, Qianqian Wang, Shiyun Ai, Minglin Wang,