Pulsed-laser flash and continuous photolysis of ion-pair complexes of methyl viologen and ethylenediamine tetra-acetic acid in aqueous solution

1986 ◽  
Vol 82 (12) ◽  
pp. 2275 ◽  
Author(s):  
Dasari R. Prasad ◽  
Morton Z. Hoffman
Keyword(s):  
Aqueous Solution ◽  
Acetic Acid ◽  
Methyl Viologen ◽  
Pulsed Laser ◽  
Laser Flash ◽  
Ion Pair

Pulsed-laser flash and continuous photolysis of aqueous solutions of methylviologen, oxalate, and their ion-pair complexes

1986 ◽  
Vol 108 (17) ◽  
pp. 5135-5142 ◽  
Author(s):  
Dasari R. Prasad ◽  
Morton Z. Hoffman ◽  
Quinto G. Mulazzani ◽  
Michael A. J. Rodgers
Keyword(s):  
Aqueous Solutions ◽  
Pulsed Laser ◽  
Laser Flash ◽  
Ion Pair

STUDIES ON CONTINUOUS ADSORPTION OF ACETIC ACID FROM AQUEOUS SOLUTION USING RICE HUSK ADSORBENT

2018 ◽  
Vol 14 (1) ◽  
pp. 42
Author(s):  
S. V. A. R. SASTRY ◽  
SRI ADIBATLA ANUSHA ◽  
S. VARUN ◽  
◽  
◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Acetic Acid ◽  
Rice Husk ◽  
Continuous Adsorption

Size reduction of gold particles in aqueous solution by pulsed laser irradiation

1998 ◽  
Vol 72 (7) ◽  
pp. 789-791 ◽  
Author(s):  
Hideaki Kurita ◽  
Akinori Takami ◽  
Seiichiro Koda
Keyword(s):  
Aqueous Solution ◽  
Laser Irradiation ◽  
Pulsed Laser ◽  
Size Reduction ◽  
Gold Particles ◽  
Pulsed Laser Irradiation

Photochemistry of Free-Base Porphyrin Linked to Methyl Viologen

1992 ◽  
Vol 57 (1) ◽  
pp. 26-32 ◽  
Author(s):  
N. M. Guindy ◽  
F. M. Elzawawy ◽  
D. Y. Sabry
Keyword(s):  
Methyl Viologen ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Phenyl Group ◽  
Laser Flash ◽  
Porphyrin Ring ◽  
Free Base ◽  
Intramolecular Quenching ◽  
Quenching Efficiency ◽  
Triton X

The photochemistry of free-base meso-tetraphenylporphyrin linked to methyl viologen via an alkoxy chain (n = 3) at the ortho, meta or para-position of one meso-phenyl group, in Triton X-100 micellar aqueous solutions is reported. The appended viologen does not quench the porphyrin fluorescence nor its triplet excited state due to the different solubilization of both parts of the molecule in the medium where the porphyrin ring resides in the hydrophobic phase and the alkoxy linker protrudes into the rather diffuse outer phase of detergent oxyethylene units, while the viologen moiety penetrates into the aqueous layer. However, laser flash photolysis measurements show that in the presence of nicotinamide dinucleotide, NADH, the porphyrin ring is reduced to phlorin due to the penetration of NADH into the organic phase. For porphyrin-tetraviologen in which a viologen molecule is linked to each of the porphyrin meso-position via alkoxy chain, fluorescence quenching could be achieved. The values of the quenching efficiency are high (94% in acetonitrile) compared to intramolecular quenching and are dependent upon the solvent viscosity.

Acute Mercury Poisoning After Polyvinyl Alcohol Preservative Ingestion

PEDIATRICS ◽  
1980 ◽  
Vol 66 (1) ◽  
pp. 132-134
Author(s):  
James Seidel
Keyword(s):  
Aqueous Solution ◽  
Acetic Acid ◽  
Polyvinyl Alcohol ◽  
Mercuric Chloride ◽  
Medical Center ◽  
Mercury Poisoning

Polyvinyl alcohol preservative (PVA) is used routinely in the laboratory for collection of specimens for examination for ova and parasites.1-4 PVA, presently used at Harbor-UCLA Medical Center, contains: 4.5% mercuric chloride, 5% polyvinyl alcohol, 30% denatured alcohol, 4.5% acetic acid, and 1.5% glycerin in an aqueous solution. The kit, as shown in the Figure, contains three bottles with 10-ml aliquots of PVA, wooden sticks for mixing the specimen, and written instructions for collection of the specimens. The bottles are clearly labeled as poison in English and Spanish, and specific verbal as well as written instructions are given to patients and their families when the ova and parasite kits are dispensed.

scholarly journals Cation, Anion and Ion-Pair Complexes with a G-3 Poly(ethylene imine) Dendrimer in Aqueous Solution

Molecules ◽  
2017 ◽  
Vol 22 (5) ◽  
pp. 816 ◽  
Author(s):  
Matteo Savastano ◽  
Carla Bazzicalupi ◽  
Claudia Giorgi ◽  
Paola Gratteri ◽  
Antonio Bianchi
Keyword(s):  
Aqueous Solution ◽  
Ion Pair ◽  
Ethylene Imine ◽  
Poly Ethylene
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