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of 52
pro vyhledávání: '"Donald R. Bobbitt"'
Publikováno v:
Microchemical Journal. 76:105-112
The development of new approaches for assessing enantiomeric purity is an area of critical need in the pharmaceutical and biotechnological industries. Recent work has shown that two enantiomers, although virtually identical physically, may exhibit wi
Real-Time Assessment of Enantiomeric Purity Via a Polarimetric/Absorption Detector Response Function
Publikováno v:
Enantiomer: A Journal of Sterochemistry. 7:41-47
The development of methodology appropriate for the rapid and precise assessment of enantiomeric purity is a critical need in the life sciences with impact in a number of areas including biomedical research, biotechnology, and pharmaceutical science.
Autor:
Romeo D. Lodevico, Rekha D. Shah, Thomas J. Edkins, Hewva Saranadasa, Donald R. Bobbitt, Peter C. Meier
Publikováno v:
Enantiomer: A Journal of Sterochemistry. 7:11-22
This report compares laser-based polarimetric and UV data for quantitating incompletely resolved enantiomers by HPLC. Using L- and D-phenylalanine as a working model, response data is shown across the entire detection region while emphasizing the reg
Publikováno v:
Analytica Chimica Acta. 441:231-241
The properties of four ruthenium complexes and their efficiency as probes for chemiluminescent (CL) detection were evaluated, and a protocol for CL detection of a protein labeled with a tertiary amine was proposed. Of the four ruthenium complexes stu
Autor:
Donald R. Bobbitt, Darrell R Fry
Publikováno v:
Microchemical Journal. 69:25-33
There exist a large number of immobilization strategies useful for preparing optical fiber (OF) sensors; one unique approach has been termed dynamic modification. Dynamic modification borrows techniques from reverse-phase high performance chromatogra
Autor:
Donald R. Bobbitt, Sean W. Linder
Publikováno v:
TrAC Trends in Analytical Chemistry. 20:111-123
The unique response characteristics of optical activity detectors make them an important adjunct to high performance liquid chromatography (HPLC) for the analysis of biologically active molecules. The recent commercial introduction of turn-key, circu
Publikováno v:
Microchemical Journal. 65:189-195
Ru(bpy)33+-based chemiluminescence detection of underivatized amino acids was coupled to capillary electrophoresis and evaluated as a separation and detection methodology for the compositional analysis of peptides and proteins. Two tripeptides were s
Autor:
Xin Wang, Donald R. Bobbitt
Publikováno v:
Analytica Chimica Acta. 383:213-220
A significant number of different chemical functional groups can be sensitively detected via their chemiluminescent reaction with Ru(bpy)33+, thus suggesting that this detection strategy may have widespread application in a variety of important areas
Publikováno v:
Chirality. 11:187-194
This paper addresses direct HPLC detection of amino acids, di and tripeptides via laser-based polarimetry. Mass detection limits typically range from 0.5 to 50 μg injected on-column, corresponding to concentration levels from 0.1 to 1 mg/ml. These l