scholarly journals Absorption Spectra of Dyes. II. On Non-additivity of Absorption Spectra of Binary Mixtures of a Direct Dye and Some Acid Dyes in Aqueous Solution

1959 ◽  
Vol 32 (2) ◽  
pp. 119-124 ◽  
Author(s):  
Yoshié Tanizaki ◽  
Teruaki Kobayashi ◽  
Noboru Ando
Keyword(s):  
Aqueous Solution ◽  
Absorption Spectra ◽  
Binary Mixtures ◽  
Acid Dyes ◽  
Direct Dye

Simulation of UV Absorption Spectra and Relaxation Dynamics of Uracil and Uracil-Water Clusters

2020 ◽  
Author(s):  
Branislav Milovanović ◽  
Jurica Novak ◽  
Mihajlo Etinski ◽  
Wolfgang Domcke ◽  
Nadja Doslic
Keyword(s):  
Aqueous Solution ◽  
Gas Phase ◽  
Absorption Spectra ◽  
Absorption Spectroscopy ◽  
Water Clusters ◽  
Uv Absorption ◽  
Relaxation Dynamics ◽  
Nonradiative Relaxation ◽  
Uv Absorption Spectra ◽  
Uv Absorption Spectroscopy

Despite many studies, the mechanisms of nonradiative relaxation of uracil in the gas phase and in aqueous solution are still not fully resolved. Here we combine theoretical UV absorption spectroscopy...

Removal of acid dyes from aqueous solution using potato peel waste biomass: a kinetic and equilibrium study

2013 ◽  
Vol 52 (25-27) ◽  
pp. 4999-5006 ◽  
Author(s):  
Edris Hoseinzadeh ◽  
Mohammad-Reza Samarghandi ◽  
Gordon McKay ◽  
Naser Rahimi ◽  
Javad Jafari
Keyword(s):  
Aqueous Solution ◽  
Waste Biomass ◽  
Potato Peel ◽  
Acid Dyes ◽  
Equilibrium Study

scholarly journals The pH Dependence of Absorption Spectra of Carthamin in Aqueous Solution

2007 ◽  
Vol 63 (8) ◽  
pp. 185-192
Author(s):  
Tamako Otsu ◽  
Mitsuhiko Hida
Keyword(s):  
Aqueous Solution ◽  
Absorption Spectra ◽  
Ph Dependence

scholarly journals Adsorption of Acid Dyes from Aqueous Solution on a Chitosan-cotton Composite Material Prepared by a New Pad-dry Process

2011 ◽  
Vol 6 (3) ◽  
pp. 155892501100600 ◽  
Author(s):  
Mahjoub Jabli ◽  
Mohamed Hassen V. Baouab ◽  
Mohamed Sadok Roudesli ◽  
Aghleb Bartegi
Keyword(s):  
Aqueous Solution ◽  
Indigo Carmine ◽  
Langmuir Equation ◽  
Acid Dyes ◽  
Chain Molecules ◽  
Dry Process ◽  
Dipole Interactions ◽  
Cure Time ◽  
Recovery Angle ◽  
Acid Blue

In this paper, we developed a method that may be considered as an easy and economical way to prepare chitosan-cotton composite (CH-cotton) materials using an electrolytes-free pad-dry process in which the cure step was performed in an oven microwave to provide a cotton fabric with greatly enhanced affinity for acid dyes. Evidence of successful interaction between cotton and CH through formation of hydrogen bonding and/or ion dipole interactions was analysed by FTIR spectroscopy. Influence of cure time onto the weight per surface unit of samples has been studied and five CH-cotton composite materials with different %CH content (I-V) were prepared. Crosslinking of cellulosic chain molecules of cotton fiber through CH segments was confirmed by Wrinkle Recovery Angle (WRA) and Tensile properties measurements. CH-cotton samples were then tested as adsorbent of four acid dyes from no-electrolytes aqueous solution [Indigo Carmine (AB74), Acid Red 183 (AR183), Acid Blue 161 (AB161) and Acid Yellow 17 (AY17)]. Results were monitored using, reflectance spectro-colorimeter and spectrophotometer analyses. Data obtained with treated cotton showed better dye exhaustion than obtained with untreated one. The modelling of the adsorption isotherms was performed by Langmuir equation and the thermodynamic parameters were evaluated. Globally, the lack of affinity of cotton for acid dyes is widely overcome by the use of low %CH content ranging from 0.079 to 0.515

Absorption spectra of pyruvic acid in water: insights from calculations for small hydrates and comparison to experiment

2020 ◽  
Vol 22 (22) ◽  
pp. 12658-12670
Author(s):  
Dorit Shemesh ◽  
Man Luo ◽  
Vicki H. Grassian ◽  
R. Benny Gerber
Keyword(s):  
Aqueous Solution ◽  
Absorption Spectra ◽  
Pyruvic Acid ◽  
Quantitative Description ◽  
Experimental Spectrum ◽  
Microscopic Interpretation

This study shows that small hydrate models including the roles of both neutral and deprotonated speciated forms provide a good quantitative description and a microscopic interpretation of the experimental spectrum of pyruvic acid in aqueous solution.

Sign in / Sign up

Export Citation Format

Share Document