A sensitive fluorescent sensor for selective determination of dichlorvos based on the recovered fluorescence of carbon dots-Cu(II) system

2016 ◽  
Vol 202 ◽  
pp. 81-87 ◽  
Author(s):  
Juying Hou ◽  
Guangjuan Dong ◽  
Zhengbin Tian ◽  
Jiutian Lu ◽  
Qianqian Wang ◽  
...  
2017 ◽  
Vol 77 ◽  
pp. 508-512 ◽  
Author(s):  
Junjian Li ◽  
Gancheng Zuo ◽  
Xiaoliang Qi ◽  
Wei Wei ◽  
Xiaohao Pan ◽  
...  

2019 ◽  
Vol 170 ◽  
pp. 107574 ◽  
Author(s):  
Minhuan Lan ◽  
Shaojing Zhao ◽  
Xiaofang Wei ◽  
Kui Zhang ◽  
Zhenyu Zhang ◽  
...  

2017 ◽  
Vol 9 (45) ◽  
pp. 6379-6385 ◽  
Author(s):  
Jing Li ◽  
Jinping Song ◽  
Xiaomin Liang ◽  
Qi Ma ◽  
Lazhen Shen ◽  
...  

This work proposes a simple fluorescent sensor and method for the determination of apigenin in celery based on N-doped carbon dots.


2020 ◽  
Vol 67 (7) ◽  
pp. 1230-1238
Author(s):  
Hui‐Yun Zhai ◽  
Wen‐Li Xiao ◽  
Yan Li ◽  
Rong‐Zhen Li ◽  
Hua‐Ji Liu ◽  
...  

NANO ◽  
2017 ◽  
Vol 12 (02) ◽  
pp. 1750024 ◽  
Author(s):  
Xiqing Liu ◽  
Xiao Wei ◽  
Yeqing Xu ◽  
Hongji Li ◽  
Kai Lu ◽  
...  

In this paper, a novel fluorescent nanoswitch based on carbon dots (CDs) was developed for the sensitive and selective determination of Hg[Formula: see text] and I[Formula: see text]. The CDs were obtained by simple hydrothermal process and had a strong fluorescence emission at 440[Formula: see text]nm. The fluorescence of the CDs can be selectively quenched by Hg[Formula: see text] ion, and then the I[Formula: see text] was added into the system, which can interact with Hg[Formula: see text] and recover fluorescence of the CDs. Under optimal conditions, the quenching fluorescence intensity on addition of Hg[Formula: see text] has obtained a satisfactory linear relationship covering the linear range of 0–50[Formula: see text][Formula: see text]M with the linear relationship ([Formula: see text]), and the limit of detection is 0.047[Formula: see text][Formula: see text]M. The additions of I[Formula: see text] could lead to the fluorescence intensity of the solution of CDs and Hg[Formula: see text] (50[Formula: see text][Formula: see text]M) recover rapidly, which is linearly related ([Formula: see text]) to the concentration of I[Formula: see text] in the range from 0 to 70[Formula: see text][Formula: see text]M, the detection limit for I[Formula: see text] was calculated to be 0.084[Formula: see text][Formula: see text]M. Moreover, the developed method to detect Hg[Formula: see text] and I[Formula: see text] was evaluated in real examples, and the fluorescence switching can sensitively and selectively detect Hg[Formula: see text] and I[Formula: see text] over some potentially interfering ions, the recoveries were up to 97.8–107.0% and 96.7–106.6%, respectively.


The Analyst ◽  
2013 ◽  
Vol 138 (18) ◽  
pp. 5417 ◽  
Author(s):  
Qitong Huang ◽  
Shirong Hu ◽  
Hanqiang Zhang ◽  
Jianhua Chen ◽  
Yasan He ◽  
...  

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