Development of experimental techniques for antibiotics detection in aqueous solutions: Real-time microwave dielectrometry and UV-Vis spectrophotometry study

2021 ◽  
Vol 47 (12) ◽  
pp. 1041-1049
Author(s):  
Z. E. Eremenko ◽  
V. A. Pashynska ◽  
K. S. Kuznetsova ◽  
A. V. Martunov
Keyword(s):  
Aqueous Solutions ◽  
Real Time ◽  
Experimental Techniques ◽  
Antibiotics Detection

On the Structure of Lead(II) Complexes in Aqueous Solutions. III. Hexanuclear Clusters

2002 ◽  
Vol 67 (2) ◽  
pp. 219-227 ◽  
Author(s):  
Martin Breza ◽  
Alena Manová
Keyword(s):  
Quantum Chemistry ◽  
Aqueous Solutions ◽  
Electronic Structures ◽  
Mndo Method ◽  
Experimental Techniques ◽  
Hexanuclear Clusters ◽  
Semiempirical Mndo

Optimum geometries based on experimental structures and corresponding electronic structures of [Pb6(μ3-OH)8]4+ and [Pb6O(μ3-OH)6]4+ clusters as well as of their hydrated [Pb6(μ3-OH)8(H2O)6]4+ and [Pb6O(μ3-OH)6(H2O)6]4+ analogues are investigated using the semiempirical MNDO method of quantum chemistry. Direct Pb-Pb and O-O bonds are vanishing in the systems under study. Small differences in interatomic Pb-Pb and Pb-O distances between these clusters indicate that they cannot be distinguished by recent experimental techniques in solution. Both the mentioned structures are stable and might coexist in solution.

scholarly journals The Electrochemical Degradation of Poly(3,4-ethylenedioxythiophene) Films Electrodeposited from Aqueous Solutions

2016 ◽  
Vol 230 (9) ◽  
Author(s):  
Gyözö G. Láng ◽  
Mária Ujvári ◽  
Soma Vesztergom ◽  
Veniamin Kondratiev ◽  
Jenö Gubicza ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Structural Changes ◽  
Morphological Changes ◽  
Aqueous Media ◽  
Degradation Process ◽  
Electrochemical Stability ◽  
Experimental Techniques ◽  
Electrochemical Degradation ◽  
Degradation Properties

AbstractIn this review, results of recent studies on the electrochemical stability and degradation properties of poly(3,4-ethylenedioxythiophene) films are summarized, with particular emphasis on the structural changes induced by overoxidation and electrochemical degradation. The most important electrodeposition methods for the preparation of PEDOT films in surfactant free aqueous media have also been summarized, and several experimental techniques suitable for monitoring the degradation process have been discussed. Morphological changes in PEDOT films during overoxidation have been analyzed. Overoxidation mechanisms proposed in the literature have been surveyed.

scholarly journals Kinetics of fluoride-catalysed synthesis of organosilica colloids in aqueous solutions of amphiphiles

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28028-28037
Author(s):  
Teh-Min Hu ◽  
Chien-Yu Lin ◽  
Meng-Ju Wu
Keyword(s):  
Aqueous Solutions ◽  
Real Time ◽  
Sodium Fluoride ◽  
Two Phase ◽  
Ftir Studies ◽  
Kinetics Of

Systematic real-time ATR-FTIR studies reveal ultrafast two-phase kinetics of sodium fluoride-catalysed synthesis of organosilica colloids in purely aqueous, amphiphile-assisted systems.

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