Determination of carbon dioxide in aqueous solutions under pressure

1969 ◽  
Vol 41 (12) ◽  
pp. 1710-1711 ◽  
Author(s):  
Paul Bennett. Stewart ◽  
Prem K. Munjal ◽  
Frank. Quiring
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solutions

Mathematical modelling and in situ determination of pH in complex aqueous solutions during high-pressure carbon dioxide treatment

2010 ◽  
Vol 55 (1) ◽  
pp. 77-85 ◽  
Author(s):  
L. Garcia-Gonzalez ◽  
H. Teichert ◽  
A.H. Geeraerd ◽  
K. Elst ◽  
L. Van Ginneken ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Mathematical Modelling ◽  
Aqueous Solutions

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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