Synthesis of l-glutathione-capped-ZnSe quantum dots for the sensitive and selective determination of copper ion in aqueous solutions

2014 ◽  
Vol 203 ◽  
pp. 35-43 ◽  
Author(s):  
Yongling Ding ◽  
Shirley Z. Shen ◽  
Huadong Sun ◽  
Kangning Sun ◽  
Futian Liu
Keyword(s):  
Quantum Dots ◽  
Aqueous Solutions ◽  
Copper Ion ◽  
Selective Determination ◽  
Determination Of Copper

Determination of Copper Ion by Near-infrared-emitting CdSeTe Quantum Dots

2014 ◽  
Vol 35 (2) ◽  
pp. 257-262
Author(s):  
刘声燕 LIU Sheng-yan ◽  
王益林 WANG Yi-lin ◽  
杨昆 YANG Kun
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Copper Ion ◽  
Determination Of Copper

Surface-modified CdSe quantum dots for the sensitive and selective determination of Cu(II) in aqueous solutions by luminescent measurements

2005 ◽  
Vol 549 (1-2) ◽  
pp. 20-25 ◽  
Author(s):  
Maria Teresa Fernández-Argüelles ◽  
Wei Jun Jin ◽  
José M. Costa-Fernández ◽  
Rosario Pereiro ◽  
Alfredo Sanz-Medel
Keyword(s):  
Quantum Dots ◽  
Aqueous Solutions ◽  
Cdse Quantum Dots ◽  
Selective Determination ◽  
Surface Modified

LUMINESCENT DETERMINATION OF SUGAR IN NATURAL HONEY

2020 ◽  
Vol 0 (4) ◽  
pp. 29-32
Author(s):  
B.M. GAREEV ◽  
◽  
A.M. ABDRAKHMANOV ◽  
G.L. SHARIPOV ◽  
◽  
...  
Keyword(s):  
Quantum Dots ◽  
Laboratory Test ◽  
Aqueous Solutions ◽  
Analytical Method ◽  
Sugar Content ◽  
Carbon Quantum Dots ◽  
Photoluminescence Intensity ◽  
Sucrose Content ◽  
Natural Honey

The photoluminescence of carbon quantum dots synthesized from natural honey and mixtures of honey and sugar has been studied. An increase in the sugar content leads to a decrease in the photoluminescence intensity without changing the shape of the luminescence spectrum of these quantum dots aqueous solutions, which is associated with a decrease in the yield of their synthesis in the sugar presence. The discovered effect can be used to detect sugar in honey. When examining five different market samples of flower honey using this method, two of them showed a significant decrease in the photoluminescence intensity. A laboratory test for compliance with GOST 19792-2017 Standard requirements established an excess of the sucrose content in these samples. Luminescent determination of sugar in honey does not require complicated equipment and can be used to develop a new analytical method for determining the sugar content in counterfeit natural honey.

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