Determining Sorption/desorption Kinetics of Polycyclic Aromatic Hydrocarbons with Great Lakes Sediments by Radiochemical Techniques PDF Download
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Author: Mark Stapleton
Publisher:
ISBN:
Category :
Languages : en
Pages : 114
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Author: Mark Stapleton
Publisher:
ISBN:
Category :
Languages : en
Pages : 114
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Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461303931
Category : Science
Languages : en
Pages : 427
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 39 (thesis year 1994) a total of 13,953 thesis titles from 21 Canadian and 159 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 39 reports theses submitted in 1994, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Author: W. H. Shafer
Publisher: Springer Science & Business Media
ISBN: 9780306447112
Category : Education
Languages : en
Pages : 410
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Book Description
Volume 37 (thesis year 1992) reports a total of 12,549 thesis titles from 25 Canadian and 153 US universities (theses submitted in previous years but only now reported are indicated by the thesis year shown in parenthesis). The organization, like that of past years, consists of thesis titles arrange
Author: Doreen F. Connaughton
Publisher:
ISBN:
Category :
Languages : en
Pages : 370
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Author: AmyMarie Accardi-Dey
Publisher:
ISBN:
Category : Carbon compounds
Languages : en
Pages : 304
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Sorption is a key factor in determining the fate of polycyclic aromatic hydrocarbons (PAHs) in the environment. Here, PAH sorption is proposed as the sum of two mechanisms: absorption into a biogenic, organic carbon (OC) fraction and adsorption onto a combustion-derived, black carbon (BC) fraction. To study BC adsorption, a 375 deg C thermal oxidation method was employed to remove OC and isolate the BC fraction. Test studies showed that nitrogen-containing macromolecules charred during this pretreatment causing a positive bias to the BC measurement. Meanwhile, the oxidation of relatively small BC particles underestimated the total BC content in non-charring samples. Models based on carbon oxidation were then proposed to estimate reasonably the total BC and OC contents of sediment samples. The adsorption of pyrene onto isolated BC particles was then studied by constructing a nonlinear isotherm, which was characterized with a BC-normalized distribution coefficient and a Freundlich exponent. Pyrene sorption to Boston Harbor sediment was then modeled as the sum of OC absorption and BC adsorption using the measured adsorption parameters and literature absorption values. Finally, literature reports of high PAH distribution coefficients from the field and nonlinear PAH isotherms from the laboratory were re-explained by considering BC adsorption.
Author: GW. Hodgson
Publisher:
ISBN:
Category : TECHNOLOGY & ENGINEERING
Languages : en
Pages : 12
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Marine and fresh water sediments exhibit a wide variety of polycyclic aromatic hydrocarbons. These range from the two-ringed biphenyl and naphthalene species to the seven-ringed coronene member, and include a variety of intermediate aromatics exhibiting isomeric differences as well as alkylated derivatives. Analytical methods were developed for this spectrum of aromatics involving extraction and purification techniques followed by a gas chromatographic separation combined with mass spectrometry for identification. In this manner, a total of 27 polycyclic aromatics were detected in Great Lakes sediments along with three aromatics and three dicarboxylic acid esters in waters of the Great Lakes. Limits of detection for aromatics were: 1 ng/liter in water, based on 30-liter water samples and 2 ng/g of dry sediment when extracted from 100 g of wet sediment.
Author: Leif Krag Rowles
Publisher:
ISBN:
Category : Lake sediments
Languages : en
Pages : 360
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Author: Andrew Robert Bonas
Publisher:
ISBN:
Category :
Languages : en
Pages : 360
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 496
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"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Author: Guohui Wang
Publisher:
ISBN:
Category : Polycyclic aromatic hydrocarbons
Languages : en
Pages : 100
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