Characterization of the warning odor of the North American porcupine: Capillary electrophoresis of the priority pollutant phenols.
Item
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Title
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Characterization of the warning odor of the North American porcupine: Capillary electrophoresis of the priority pollutant phenols.
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Identifier
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AAI9605618
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identifier
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9605618
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Creator
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Li, Guang.
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Contributor
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Adviser: David C. Locke
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Date
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1995
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Language
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English
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Publisher
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City University of New York.
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Subject
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Chemistry, Analytical | Biology, Zoology
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Abstract
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This dissertation consists of three parts: (I) Characterization of the Warning Odor of the North American Porcupine; (II) Separation of the Priority Pollutant Phenols by Capillary Zone Electrophoresis; and (III) Nonionic Surfactants as Buffer Additive for Improving Separation Selectivities in Capillary Electrophoresis.;Part One reports for the first time the chemical composition of the porcupine's warning odor. Thirty-five compounds are identified in the headspace odor extract by GC/MS. The major components include acetates (C14 and C16), terpenoids, and lactones. The principal component responsible to the unique odor is an enantiomer of {dollar}\delta{dollar}-decalactone (tentatively the R-enantiomer).;Part Two studies the application of capillary zone electrophoresis (CZE), a newly developed separation technique, to the analysis of EPA priority pollutant phenols. Using a simple mathematical model, the buffer pH optimization can be greatly simplified. Under the optimized conditions, the eleven phenols can be resolved in less than 15 min using a 75 {dollar}\mu{dollar}m i.d. capillary and 22.5 kV applied voltage. Using a 30 {dollar}\mu{dollar}m i.d. capillary, complete separation can be achieved in less than 3 min.;Part Three discusses the potential of nonionic surfactants, Tween 40 and Brij 35, for improving separation selectivity in capillary electrophoresis. The addition of as little as 0.5% of the surfactants to running buffer effectively improves the separation selectivities of the priority pollutant phenols, which shows unique advantages compared to other buffer modifiers.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
