Fluorescent Sensors Based on Organic Polymer-Capped Gold Nanoparticles for the Detection of Cr(VI) in Water
Joint Authors
Wang, Na
Wang, Liangchen
Yang, Hong
Xiong, Tingting
Xiao, Shangping
Zhao, Jiawen
Du, Weiping
Source
International Journal of Analytical Chemistry
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-03
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
“Turn-off” fluorescent sensors for Cr(VI) have been fabricated based on organic polymer-capped gold nanoparticles.
The fluorescence intensity, as well as the response behavior of the sensors, is dependent on the pH values of buffer solution and dilution amounts of the sensors.
When diluted 50 times with pH 2.0 buffer solution, the sensors show good linear responses toward Cr(VI) at concentrations between 2.8–5.9 μM and 5.9–29 μM.
The calculated detection limit is 0.63 μM (S/N=3).
The interference study and real sample assays exhibit satisfying selectivity and reliability results.
Furthermore, the quenched intensity of fluorescence could be recovered by Fe(II) ion, which provides a potential method to detect Fe(II) ions.
The quenching and recovering mechanisms have also been investigated.
It is suggested that the quenching mechanism is based on the combined effects of internal electron transfer and the inner filter effect.
Finally, the recovering mechanism is based on the redox reactions between the Cr(VI) and Fe(II) ions.
American Psychological Association (APA)
Wang, Na& Wang, Liangchen& Yang, Hong& Xiong, Tingting& Xiao, Shangping& Zhao, Jiawen…[et al.]. 2019. Fluorescent Sensors Based on Organic Polymer-Capped Gold Nanoparticles for the Detection of Cr(VI) in Water. International Journal of Analytical Chemistry،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1155836
Modern Language Association (MLA)
Wang, Na…[et al.]. Fluorescent Sensors Based on Organic Polymer-Capped Gold Nanoparticles for the Detection of Cr(VI) in Water. International Journal of Analytical Chemistry No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1155836
American Medical Association (AMA)
Wang, Na& Wang, Liangchen& Yang, Hong& Xiong, Tingting& Xiao, Shangping& Zhao, Jiawen…[et al.]. Fluorescent Sensors Based on Organic Polymer-Capped Gold Nanoparticles for the Detection of Cr(VI) in Water. International Journal of Analytical Chemistry. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1155836
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1155836