David Lloyd

Assistant Professor Emeritus of Chemistry

OFFICE
H. Berliner Hall 210

VOICE
(516) 463-5536

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Degrees

PHD, 1969, Univ Calif Berkeley; BS, 1964, Univ Illinois Urbana

Bio

Research Interests Biochemical Applications of LC-MS

LC-MS is a powerful technique for solving biochemical problems, both for separating the complex mixtures that are often encountered and for characterization of the primary structures of biopolymers. One such project involves the mechanism of sex determination by egg incubation temperature found in many reptiles. This project is designed to test the hypothesis that temperature-dependent sex determination in snapping turtles is caused by a direct temperature or pH effect on the kinetics of one or more of the enzymes involved in steroid metabolism. Specifically, we are looking at the kinetics of transformation of testosterone into either dihydrotestosterone or estradiol and estrone. LC-MS allows determination of these steroids in crude tissue extracts.

Recent Courses Taught

Course	Title	Level
CHEM 003B	(NS) GENERAL CHEMISTRY LAB I	Undergraduate
CHEM 132B	ORGANIC CHEM LAB	Undergraduate
CHEM 137	FOUNDATNS IN ORGANIC CHEM LAB	Undergraduate
CHEM 140	FOUNDTNS OF INORGANIC CHEM LAB	Undergraduate
CHEM 147	FNDTNS OF PHYSICAL CHEM LAB	Undergraduate