Selective recognition of dysprosium(III) ions by enhanced chemiluminescence CdSe quantum dots.
The intensity of emitted light from CdSe quantum dots (QDs)-H2O2 is described as a novel chemiluminescence (CL) reaction for determination of dysprosium. This reaction is based on the catalytic effect of Dy(3+) ions, causing a significant increase in the light emission, as a result of the reaction of quantum dots (QDs) with hydrogen peroxide. In the optimum conditions, this method was satisfactorily described by linear calibration curve in the range of 8.3×10(-7)-5.0×10(-6)M, the detection limit of 6.0×10(-8)M, and the relative standard deviation for five determinations of 2.5×10(-6)M Dy(3+) 3.2%. The main experimental advantage of the proposed method is its selective to Dy(3+) ions compared with common coexisting cations, therefore, it was successfully applied for the determination of dysprosium ions in water samples.
Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran. Electronic address: smhosseini@khayam.ut.ac.ir.
Morteza
M
Hosseini
Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Mohammad R
MR
Ganjali
Dipartimento di Scienze e Tecnologie Chimiche, Universita' di Roma Tor Vergata, 00133 Rome, Italy.
Zahra
Z
Vaezi
Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Farnoush
F
Faridbod
Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
Batool
B
Arabsorkhi
International Campus, Shahid Sadoughi University of Medical Science, Yazd, Iran.
Mohammad H
MH
Sheikhha
D019187:Cadmium Compounds / Q000737:chemistry*; D002138:Calibration; D004419:Dysprosium / Q000032:analysis*; D006861:Hydrogen Peroxide / Q000737:chemistry; D007477:Ions / Q000032:analysis; D008163:Luminescent Measurements / Q000379:methods*; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis
D019187:Cadmium Compounds; D004419:Dysprosium; D006861:Hydrogen Peroxide; D007477:Ions; D018036:Selenium Compounds; D062065:Wastewater; D014874:Water Pollutants, Chemical; C058667:cadmium selenide
Cadmium selenide; Chemiluminescence; Dysprosium; Enhancement; Quantum dots