Journal article
Rhodamine-based ratiometric fluorescence sensing for the detection of mercury(II) in aqueous solution
Talanta (Oxford), Vol.81(1), pp.433-437
2010
Handle:
https://hdl.handle.net/2376/115221
PMID: 20188942
Abstract
Novel ratiometric fluorescent silica nanoparticles with high selectivity towards Hg
2+ were synthesized for the detection of Hg
2+. Hg
2+ promoted the ring opening of spirolactam in the rhodamine moiety grafted onto the silica nanoparticles, resulting in a change in the fluorescence intensity. The fluorescence intensity was proportional to the Hg
2+ concentration, and the detection limit (S/N
=
3) for Hg
2+ was found to be 2.59
×
10
−9
mol
L
−1 with a linear range from 0.4 to 8
×
10
−7
mol
L
−1. In addition, the morphology of the silica nanoparticles, the effects of pH and co-existing substances, and the reversibility were investigated. The proposed approach was successfully applied to the determination of Hg
2+ in water samples.
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Details
- Title
- Rhodamine-based ratiometric fluorescence sensing for the detection of mercury(II) in aqueous solution
- Creators
- Haizhu Liu - Key Laboratory of Analysis and Detection Technology for Food Safety, Ministry of Education, Department of Chemistry, Fuzhou University, Fuzhou 350002, ChinaPing Yu - Key Laboratory of Analysis and Detection Technology for Food Safety, Ministry of Education, Department of Chemistry, Fuzhou University, Fuzhou 350002, ChinaDan Du - Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, ChinaChunyan He - Key Laboratory of Analysis and Detection Technology for Food Safety, Ministry of Education, Department of Chemistry, Fuzhou University, Fuzhou 350002, ChinaBin Qiu - Key Laboratory of Analysis and Detection Technology for Food Safety, Ministry of Education, Department of Chemistry, Fuzhou University, Fuzhou 350002, ChinaXi Chen - Key Laboratory of Analysis and Detection Technology for Food Safety, Ministry of Education, Department of Chemistry, Fuzhou University, Fuzhou 350002, ChinaGuonan Chen - Key Laboratory of Analysis and Detection Technology for Food Safety, Ministry of Education, Department of Chemistry, Fuzhou University, Fuzhou 350002, China
- Publication Details
- Talanta (Oxford), Vol.81(1), pp.433-437
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Elsevier B.V
- Identifiers
- 99900548274001842
- Language
- English
- Resource Type
- Journal article