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ERIC Number: EJ980146
Record Type: Journal
Publication Date: 2012-Jan
Pages: 6
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
Using Artificial Soil and Dry-Column Flash Chromatography to Simulate Organic Substance Leaching Process: A Colorful Environmental Chemistry Experiment
de Avellar, Isa G. J.; Cotta, Tais A. P. G.; Neder, Amarilis de V. Finageiv
Journal of Chemical Education, v89 n2 p248-253 Jan 2012
Soil is an important and complex environmental compartment and soil contamination contributes to the pollution of aquifers and other water basins. A simple and low-cost experiment is described in which the mobility of three organic compounds in an artificial soil is examined using dry-column flash chromatography. The compounds were applied on top of the soil surface, and the column was irrigated with a dilute solution of calcium chloride that mimics rain. The compounds were detected in column drainage fractions using classic qualitative tests in which the intensity of the color produced is related to the concentration of the analyte. The experiment replicates a leaching system in which organic substances migrate through soil at distinct rates as a result of differences in partition constants and water solubility, properties that are related to structural features. (Contains 1 table and 3 figures.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A