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Full-Text Articles in Physical Sciences and Mathematics
Detection And Analysis Of Carbonyl Compounds In Rural Cloudwater, Steven Bart Bertman
Detection And Analysis Of Carbonyl Compounds In Rural Cloudwater, Steven Bart Bertman
Honors Theses
A new technique for aqueous determination of aldehydes and ketones was field tested along with a new technique for ambient air analysis. The work was done during the summer of 1984 on Whiteface Mountain in Wilmington, NY. Both techniques utilized carbonyl derivitization as their 2,4-dinitrophenyl hydrazones and subsequent analysis by reversed phase HPLC. Analysis of the blank levels for the ambient air method shows the levels found to be non-detectable. The aqueous method worked well. Formaldehyde, acetaldehyde, and acetone were the only species found in cloud water. They were generally present in concentrations between .5 uM and 4 uM. Little …
The Syntheses Of Benzo-(2.2)-Paracyclophane, 2, 15-Dithia-(3.3)-Napthalenophane, And Hexamethylbenzene Dichloride, David Gene Barrett
The Syntheses Of Benzo-(2.2)-Paracyclophane, 2, 15-Dithia-(3.3)-Napthalenophane, And Hexamethylbenzene Dichloride, David Gene Barrett
Honors Theses
The purpose of this study was the preparation by a novel approach of benzo-(2.2)-paracyclophane. Also synthesized were the syn-and anti-isomers of 2,15-dithia (3.3)- napthalenophane. The results of these syntheses are supported by spectral studies. In preparation for future study of the ruthenium complexes of these cyclophanes, hexamethylbenzeruthenium dichloride was also synthesized.
Determination Of The Equilibrium Constant For The Acetaldehyde-Bisulfite Addition Compound, Mark B. Richard
Determination Of The Equilibrium Constant For The Acetaldehyde-Bisulfite Addition Compound, Mark B. Richard
Honors Theses
Synthesis of the addition compounds of formaldehyde, acetaldehyde, acetone, and propionaldehyde with sodium bisulfite was achieved using the method of Stewart and Donnally. Recognition of a water comtamination led to a method for determining purity using the integrations from NMR spectrometry. An equilibrium constant for the acetaldehyde-bisulfite addition compound was determined using the method of Dasgupta. A value of 6.3 x 10-5 was determined at a ph of 4.7. This value correlates well in magnitude when compared to the value of 1.56 x 10-5 for the formaldehyde-bisulfite addition compound at pH 5.0 determined by Dasgupta and also with Stewart and …
A Study Of Chemiluminescence Via Flash Photolysis, Craig Lawrence Shalmi
A Study Of Chemiluminescence Via Flash Photolysis, Craig Lawrence Shalmi
Honors Theses
We are interested in understanding the mechanistic details of photo-initiated chemiluminescent reactions. Currently, we are examining reactions which lead to luminescent from electronically excited nitric oxide. Stedman has reported observing NO gamma-band emission in the thermal reaction of hydrazoic acid, HN3 with O(3P). The rate constant for the production of NO* is low and, consequently, the emission intensity is weak. We are endeavoring to generate excited NO from HN3 and O(1D), the later produced in the flash photolysis of ozone. It is hoped that a greater population of NO* will be produced yielding a greater chemiluminescent intensity. By observing the …