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An Environmental Chemistry Laboratory for the Determination of a Distribution Coefficient
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Abstract
This article describes a new and relatively simple set of experimental procedures for determining distribution coefficients in an environmental chemistry laboratory. Such experiments are usually avoided in environmental chemistry courses because of the unpredictability of results when uncharacterized soil and sediment samples are used. These experiments rely on commercial reference materials that will allow instructors and students to reproduce our results and to illustrate sorption phenomena and fate and transport concepts. Students determine a distribution coefficient for copper as a function of copper concentration, suspended solids concentration, pH, and ionic strength. Their response is very positive, especially when the experiments are used in conjunction with lecture material on sorption phenomena and pollutant fate and transport concepts.
Keywords (Audience):
Second-Year UndergraduateKeywords (Domain):
Environmental ChemistryKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
MetalsCiting Articles
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This article has been cited by 3 ACS Journal articles (3 most recent appear below).
A Multiweek, Problem-Based Laboratory Project Using Phytoremediation To Remove Copper from Soil. General Chemistry Labs for Teaching Thermodynamics and Equilibrium
Stephen G. Cessna , Tara L. S. Kishbaugh and Douglas Graber Neufeld , Gretchen A. CessnaJournal of Chemical Education2009 86 (6), 726A Multiweek, Problem-Based Laboratory Project Using Phytoremediation To Remove Copper from Soil. General Chemistry Labs for Teaching Thermodynamics and Equilibrium
Stephen G. Cessna , Tara L. S. Kishbaugh and Douglas Graber Neufeld , Gretchen A. CessnaJournal of Chemical Education2009 86 (6), 726We describe a set of laboratory exercises centered on a theme of copper pollution and phytoremediation for first-year general chemistry. The chemical concepts covered include: equilibrium, thermodynamics (Gibbs free energy, enthalpy, entropy), redox ...
A Pollutant Transformation Laboratory Exercise for Environmental Chemistry: The Reduction of Nitrobenzenes by Anaerobic Solutions of Humic Acid
Frank M. Dunnivant and Mark-Cody ReynoldsJournal of Chemical Education2007 84 (2), 315A Pollutant Transformation Laboratory Exercise for Environmental Chemistry: The Reduction of Nitrobenzenes by Anaerobic Solutions of Humic Acid
Frank M. Dunnivant and Mark-Cody ReynoldsJournal of Chemical Education2007 84 (2), 315This article presents a laboratory exercise for advanced undergraduate- or graduate-level environmental chemistry in which the student studies the chemical transformation (reduction) of substituted nitrobenzenes by natural organic matter under anaerobic ...
Use of Physicochemical Parameters To Assess the Environmental Fate of Organic Pollutants: The Fugacity Model
Xavier Domènech , José Antonio Ayllón and José PeralJournal of Chemical Education2006 83 (2), 237Use of Physicochemical Parameters To Assess the Environmental Fate of Organic Pollutants: The Fugacity Model
Xavier Domènech , José Antonio Ayllón and José PeralJournal of Chemical Education2006 83 (2), 237The use of physicochemical data to estimate the fate of chemical pollutants in environmental systems in an easy way is described. This application is presented to students in a series of labs in an environmental chemistry course, which is mainly focused ...
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- Received: August 03, 2009
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