MODELLING OF EXTRACTION EQUILIBRIUM FOR COPPER( II) EXTRACTION BY PYRIDINECARBOXYLIC ACID ESTERS FROM CONCENTRATED CHLORIDE SOLUTIONS AT CONSTANT WATER ACTIVITY AND CONSTANT TOTAL CONCENTRATION OF IONIC OR MOLECULAR SPECIES DISSOLVED IN THE AQUEOUS SOLUTION

1994 ◽  
Vol 12 (1) ◽  
pp. 99-120 ◽  
Author(s):  
G. COTE ◽  
A. JAKUBIAK ◽  
D. BAUER ◽  
J. SZYMANOWSKI ◽  
B. MOKILI ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Water Activity ◽  
Molecular Species ◽  
Total Concentration ◽  
Pyridinecarboxylic Acid ◽  
Extraction Equilibrium ◽  
Chloride Solutions ◽  
Acid Esters

scholarly journals Cement-based materials destruction under the action of deicing salts

2019 ◽  
Vol 298 ◽  
pp. 00053 ◽  
Author(s):  
Ekaterina Potapova ◽  
Ivan Korchunov
Keyword(s):  
Aqueous Solution ◽  
Pore Solution ◽  
Colorimetric Method ◽  
Chloride Ions ◽  
Cement Matrix ◽  
Chloride Solutions ◽  
Deicing Salts ◽  
Cement Based Materials ◽  
Destructive Processes

The results of chloride ions with aqueous solution penetrating into the cement structure were determined with the colorimetric method. Some tendencies of chloride solutions migration in different conditions were established. The article suggests the possible ways of the prevention of destructive processes occur during the excessive pore solution saturation in cement matrix with chloride ions.

Studies on the Physicochemical and Processing Properties of Tremella fuciformis Powder

2018 ◽  
Vol 14 (1) ◽  
Author(s):  
Shurong Zuo ◽  
Ran Zhang ◽  
Yakun Zhang ◽  
Yong Liu ◽  
Junhui Wang
Keyword(s):  
Aqueous Solution ◽  
Amino Acids ◽  
Total Concentration ◽  
Continuous Heating ◽  
Gel Structure ◽  
Tremella Fuciformis ◽  
Ancient Times ◽  
Network Strength ◽  
Medicinal Food ◽  
Processing Properties

AbstractTremella fuciformisis edible and medicinal food since ancient times in China. In this article, the physicochemical and processing properties ofTremella fuciformispowder (TFS) and synergistic interaction withLotus seedpowder (LTS) in aqueous solution were investigated. The elemental compositions of TFS were 1.71 % N, 47.21 % O, 40.35 % C, 6.25 % H and 0.20 % S. Aspartic and Glutamic acids were the major amino acids in TFS for taken about 0.91 % and 1.12 %. TFS dispersion couldn’t form a gel structure at all selected concentrations until the ratio of TFS: LTS was 1:1 at a total concentration of 36 mg/mL. The network strength of TFS/LTS dispersions increased with the total powder concentrations increased during continuous heating from 25°C to 70°C. Gluten, amorphous and crystalline regions, and amorphous starch were observed in mixtures TFS/LTS compared with TFS. TFS/LTS had a more concavo-convex microstructure than TFS due to starch gelatinization in LTS.

scholarly journals A chemical probe technique for the determination of reactive halogen species in aqueous solution: Part 2 – chloride solutions and mixed bromide/chloride solutions

2006 ◽  
Vol 6 (1) ◽  
pp. 941-979 ◽  
Author(s):  
C. Anastasio ◽  
B. M. Matthew
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Method Development ◽  
Companion Paper ◽  
Chemical Probe ◽  
Chloride Solutions ◽  
Reactive Halogen Species ◽  
A New Technique ◽  
Halogen Species

Abstract. Although reactive halogen species (X*=X●, ●X2−, X2 and HOX, where X=Br, Cl, or I) are important environmental oxidants, relatively little is known about their kinetics in condensed phases such as seawater and sea-salt particles. Here we describe a new technique to determine reactive chlorine and bromine species in aqueous solutions by using allyl alcohol (CH2=CHCH2OH) as a chemical probe. This probe is combined with competition kinetics in order to determine steady state concentrations of X*(aq). In some cases the technique also can be used to determine the rates of formation and lifetimes of X* in aqueous solution. In a companion paper we reported the results of our method development for aqueous solutions containing only bromide (Br−). In this paper, we discuss method development for solutions containing chloride (Cl−) alone, and for solutions containing both bromide and chloride.

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