Thomas N. Loegel

Thomas N. Loegel
United States Naval Research Laboratory | NRL · Chemistry Division

Doctor of Philosophy; Chemistry

About

14
Publications
841
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
129
Citations
Citations since 2016
6 Research Items
98 Citations
201620172018201920202021202205101520
201620172018201920202021202205101520
201620172018201920202021202205101520
201620172018201920202021202205101520

Publications

Publications (14)
Article
A set of low sulfur diesel fuels from the Western Pacific region were found to be unstable during storage although they passed all standard specification tests. This sample set was found to have high nitrogen content. Initially, liquid-liquid extractions with a mild aqueous acid were performed to separate basic and non-basic nitrogen groups in an a...
Conference Paper
Full-text available
The current fuel storage stability evaluations, ASTM D5304 and D4625, are time consuming and require specialized laboratory capabilities. Optical-based sensors have a fast response time, require little-to-no sample preparation, and can be combined with chemometric techniques to provide substantial chemical information. As such, excitation-emission...
Article
Fuel chromatography is inherently limited by the high complexity of petroleum fuel compositions. In practice, almost no fuel components are fully resolved in gas chromatography. This is due to both insufficient peak capacity for the large number of individual components within time and chromatographic efficiency constraints, and insufficient resolv...
Article
An analytical method was developed for the determination of the metal deactivator additive (MDA) in jet and diesel fuels. Both uncomplexed free MDA and the copper complex (Cu-MDA) can be determined simultaneously, providing information about the copper exposure of the fuel. Using Ultra High Performance Liquid Chromatography (UHPLC), separation of M...
Article
This study was undertaken to address the need for an improved analytical method to detect and quantify hindered phenolic antioxidant additives in Navy mobility fuels that overcomes the limitations of currently available methods. It was demonstrated that hindered phenols in fuels can be accurately quantified using capillary gas chromatographymass sp...
Article
The high cost and limited availability of emerging alternative fuels and/or fuel blending stocks with unknown compositions are often major impediments to the certification of these materials as Fit-For-Purpose (FFP) for the U.S. Navy. A method was desired whereby a candidate fuel could be rapidly prescreened to determine if it would be suitable for...
Article
The large class sizes of first-year chemistry labs makes it challenging to provide students with hands-on access to instrumentation because the number of students typically far exceeds the number of research-grade instruments available to collect data. Multifunctional chemical analysis (MCA) systems provide a viable alternative for large-scale inst...
Article
The high cost and limited availability of emerging alternative fuels is often a major impediment to certification of these fuels as Fit-For-Purpose (FFP) for the U.S. Navy. A method whereby a candidate fuel could be rapidly screened for many FFP properties, using a minimal volume (< 1 mL), would overcome this limitation. We have previously reported...
Article
This study involves the use of polyamines as potential resolving agents for the capillary electrophoresis (CE) of glycosaminoglycans (GAGs), specifically heparin, dermatan sulfate, chondroitin sulfate, over-sulfated chondroitin sulfate (OSCS), and hyaluronan. All of the compounds can be separated from each other with the exception of chondroitin su...
Article
of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
Article
The use of a 4.6 × 250 mm, 5 μm cyanopropyl column is effective for the liquid chromatography (LC) separation of asphaltenes with sequential ultraviolet (UV) and florescence detection. The mobile-phase composition is an optimized gradient from acetonitrile (MeCN) and water to N-methyl-2-pyrrolidone (NMP) and tetrahydrofuran (THF). A low flow rate o...
Article
The bioactivities and bioavailability of plant polyphenols including proanthocyanidins and other catechin derivatives may be affected by covalent reaction between polyphenol and proteins. Both processing conditions and gastrointestinal conditions may promote formation of covalent complexes for polyphenol-rich foods and beverages such as wine. Littl...

Network

Cited By