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Extraction and HPLC analysis of benzene and toluene in water.

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dc.contributor.author Hesterman Hirt, Janet L.
dc.date.accessioned 2012-06-28T14:48:31Z
dc.date.available 2012-06-28T14:48:31Z
dc.date.created 1994 en_US
dc.date.issued 2012-06-28
dc.identifier.uri http://hdl.handle.net/123456789/1677
dc.description 41 leaves en_US
dc.description.abstract Groundwater pollution with petroleum hydrocarbons is a widespread problem. Two of the most toxic and soluble are benzene and toluene. Their volatility also makes accurate analysis difficult by the commonly used gas chromatography method. In this study, reverse phase high performance liquid chromatography was evaluated for determination of their concentrations in mixtures simulating contamination ground water. The contaminants, in concentrations of 2-5 mg/L, were first extracted from the water by siphoning it through 15 cm³ of Altech XAD-4 resin contained in a buret. The resin was found to remove 99% of the contaminants. Various rinse agents, combinations of rinses, and techniques were tested and compared to determine the most efficient way to recover the benzene and toluene from the resin. The highest recoveries, 50%, and most reproducible results were obtained by using 90mL of HPLC grade methanol in a series of 10mL elutions through the resin. A rinse with methylene chloride followed by 6-10 rinses with methanol was found to be a satisfactory method of cleaning the resin. en_US
dc.language.iso en_US en_US
dc.subject Benzene. en_US
dc.subject Toluene. en_US
dc.subject High performance liquid chromatography. en_US
dc.subject Water-Purification. en_US
dc.title Extraction and HPLC analysis of benzene and toluene in water. en_US
dc.type Thesis en_US
dc.college las en_US
dc.advisor David Schroeder en_US
dc.department physical sciences en_US

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