Viscometric Determination of the Conformations and Sizes of Polyethylene Glycol Macromolecules in Aqueous Solutions

2019 ◽  
Vol 93 (6) ◽  
pp. 1054-1058 ◽  
Author(s):  
E. A. Masimov ◽  
B. G. Pashayev ◽  
G. Sh. Gasanov ◽  
Sh. N. Gadzhieva
Keyword(s):  
Polyethylene Glycol ◽  
Aqueous Solutions

The determination of polyethylene glycol nonionic surfactants in aqueous solutions containing sodium dodecyl sulphate

1983 ◽  
Vol 93 (2) ◽  
pp. 574-575
Author(s):  
Michael J Hey ◽  
John W Mactaggart ◽  
Roger B Thomas ◽  
Colin H Rochester
Keyword(s):  
Polyethylene Glycol ◽  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Nonionic Surfactants ◽  
Sodium Dodecyl

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.

Sorption of Lead by the Selective Ion Exchanger Ostsorb DETA

1992 ◽  
Vol 57 (7) ◽  
pp. 1393-1404 ◽  
Author(s):  
Ladislav Svoboda ◽  
Jan Uhlíř ◽  
Zdeněk Uhlíř
Keyword(s):  
Phosphoric Acid ◽  
Aqueous Solutions ◽  
Functional Groups ◽  
Ion Exchanger ◽  
Preconcentration Procedure ◽  
Bead Cellulose

The properties of Ostsorb DETA, a selective ion exchanger based on modified bead cellulose with chemically bonded diethylenetriamine functional groups, were studied, and its applicability to the preconcentration of trace amounts of lead from aqueous solutions was verified. The conditions of the preconcentration procedure in the column and batch modes were optimized for this purpose. The results obtained were applied to the determination of lead in phosphoric acid.

Studies of Intrinsic Volumes of Ethylene Glycol and Polyethylene Glycol–300 Molecules in Aqueous Solutions at 298.15K: Application of Tammann–Tait–Gibson (TTG) equation of state

2021 ◽  
pp. 117056
Author(s):  
Vasim R. Shaikh ◽  
Rahul R. Mahire ◽  
Namrata V. Borase ◽  
Swati D. Patil ◽  
Pankaj D. Patil ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Equation Of State ◽  
Ethylene Glycol ◽  
Aqueous Solutions ◽  
Intrinsic Volumes

Photometric cyclic-injection determination of phosphate and silicate ions simultaneously present in aqueous solutions

2009 ◽  
Vol 64 (6) ◽  
pp. 580-584 ◽  
Author(s):  
A. V. Bulatov ◽  
A. A. Tsapko ◽  
L. N. Moskvin
Keyword(s):  
Aqueous Solutions ◽  
Cyclic Injection

Determination of hydration stoichiometries and molar volumes of hydrated complexes in aqueous solutions of cellulosic ether polymers

2010 ◽  
Vol 81 (3) ◽  
pp. 578-583 ◽  
Author(s):  
Alphonso Higuera ◽  
Robert A. Bellantone
Keyword(s):  
Aqueous Solutions ◽  
Molar Volumes ◽  
Hydrated Complexes
Sign in / Sign up

Export Citation Format

Share Document