Analysis of semi-volatile organic compounds in high elevation lake sediments Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/tq57nt14b

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  • The transport and deposition of airborne contaminants, including semivolatile organic compounds (SOCs), to high elevation ecosystems is recognized as a potential threat to these ecosystems. The objectives of this research were to develop an analytical method to measure a wide range of SOCs in high elevation lake sediment and to evaluate decennial to century trends in SOC contaminant flux to a high elevation lake catchment, by dating and analyzing the sediment core. The new analytical method and its validation for the measurement of SOCs in high elevation lake sediments are described. The target compounds are 74 S005, including organochlorines, polycyclic aromatic hydrocarbons (PAHs), polychiorinated biphenyls (PCBs), carbamates, organophosphates, and striazines. Pressurized Liquid Extraction was used to extract SOCs from sediment. Gel Permeation Chromatography and silica gel adsorption chromatography were used to purify the sediment extract. Finally, GC/MS, with Electron Impact and Electron Capture Negative Ionization mass spectrometry, was used for the measurement and quantitation of SOCs in the sediment.
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  • File scanned at 300 ppi (Monochrome, 256 Grayscale) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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