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Octanol-water partition coefficients (Kow) vs. pH for fluorescent dye tracers (fluorescein, eosin Y), and implications for hydrologic tracer tests
fluorescein eosin Y tracer octanol-water retardation
2017/4/11
Values of the octanol-water partition coefficient (Kow) have been measured vs. pH for two fluorescent dyes (fluorescein,
eosin Y) commonly used in hydrologic tracer tests. Values for both fluorescent...
Exciton transport in thin-film cyanine dye J-aggregates
Exciton transport thin-film cyanine dye J-aggregates
2012/2/29
We present a theoretical model for the study of exciton dynamics in J-aggregated monolayers of fluorescent dyes. The excitonic evolution is described by a Monte-Carlo wave function approach which allo...
IDENTIFICATION OF THE EXPERIMENTAL DATA OF DYE ADSORPTION ON NATURAL DISPERSED SORBENTS TO THEORETICAL MODELS
adsorption natural dispersed sorbents dyes identification Isotherm theoretical models of adsorption
2011/11/11
The present study deals with removal of organic dyes from wastewater onto natural dispersed sorbents, namely bentonite, glauconite and paligorskyte. The obtained data were fitted to various theoretica...
Adsorption of cationic dye on N,O-carboxymethylchitosan from aqueous solutions: equilibrium, kinetics,and adsorption mechanism
N,O-carboxymethyl-chitosan Adsorption Methylene blue Equilibrium Kinetics Mechanism
2011/12/15
In order to improve the adsorption capacity of chitosan (CTS) for methylene blue (MB) cationic dye, a series of N,O-carboxymethyl-chitosans (N,O-CMCTS) were prepared under heterogeneous conditions by ...
Electrochemical and optical properties of an azo dye based conducting copolymer
Conducting polymers copolymers dithienylpyrrole azobenzene EDOT
2010/4/8
The electrochemical and optical properties of a novel conducting copolymer called poly(2,5'-dimethyl-[4-(2,5-di-thiophen- 2-yl-pyrrol-1-yl)-phenyl]azobenzene-co-(3,4-ethylenedioxythiophene)) (poly(1-c...
Dye staining and excavation of a lateral preferential flow network
flow network solute transport flow paths
2009/7/22
Preferential flow paths have been found to be important for runoff generation, solute transport, and slope stability in many areas around the world. Although many studies have identified the particula...
A dye dispersion experiment was performed in September, 1979, in the open ocean approximately 180 km off the east coast of Florida. An initially vertical sheet of dye extending from about 60 to 100 me...
Optical Fluoride Sensing with a Bay Region Functionalized Perylenediimide Dye
Chemosensor fluorogenic sensors chromogenic sensors fluoride sensing supramolecular chemistry
2010/4/19
A perylenedimiide (PDI) derivative functionalized at the perylene core (bay region) to carry phenyl boronic acid groups was shown to interact with fluoride with changes in the emission and absorption ...
Aspects of cationic dye molecule adsorption to palygorskite
Palygorskite Adsorption Methylene blue Crystal violet BET Groundwaterl Dissolved ions PACS
2011/11/4
This paper presents a study on the adsorption of cationic dyes, methylene blue and crystal violet, from aqueous solutions (distilled water and actual groundwater) onto palygorskite clay. In particular...
Direct Dyes Derived from 4,4'-Diaminobenzanilide Synthesis, Characterization and Toxicity Evaluation of a Disazo Symmetric Direct Dye
Direct dyes 4,4'-diaminobenzanilide fastness properties Hydractinia echinata toxicity MRC50
2010/4/20
The synthesis of a new symmetric disazo direct dye containing the non--carcinogenic 4,4'-diaminobenzanilide as the middle component and salicylic acid as the coupling component is presented. The synth...
Change of Birefringence in Dye-Doped Nematic Liquid Crystals Under Laser Illumination
Dye-doped liquid crystals Transmittance Birefringence Molecular reorientation
2010/4/13
Birefringence property of E7 nematic liquid crystal is investigated via voltage dependent transmittance spectrums. Measurements are performed at wavelength 632.8 nm, which is the absorbance peak of ou...
Kinetic Spectrophotometric Determination of Nanogram Levels of Manganese (II) by Azo Dye -- Potassium Periodate -- 1,10-Phenanthroline System
manganese (II) kinetic determination azo dye oxidation berries
2010/4/22
The catalytic effect of manganese (II) on the oxidation of 3 - Methyl - 6 - (2 - hydroxyethoxy) - 2 - [2 - methoxy - 4 - N (N,N - diethylamino) phenylazo] benzothiazolium methylsulphate (MHMDPBM), wit...
Experimental Investigation of Temperature Effect on Refractive Index of Dye Laser Liquids
Temperature Effect Refractive Index Dye Laser Liquids
2010/4/13
In this work, refractive index of selected dye laser solutions were measured by fiber optic sensor. The fiber optic probe was dipped into the liquids and according to Fresnel's Reflection Law, refract...