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Chromium Pollution: An Experiment Adapted for Freshman Engineering Students

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Penny Seymour

Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada

J. Chem. Educ., 1999, 76 (7), p 927

DOI: 10.1021/ed076p927

Publication Date (Web): July 1, 1999

Section:

History, Education, and Documentation

Abstract

An environmentally oriented experiment has been adapted for use in a freshman engineering laboratory. Students analyze water samples contaminated with Cr(VI) to determine which of several industries appears to be the source of the contamination. The adaptation involves requiring the students to develop the analytic procedure themselves, rather than working from a prepared set of instructions, and then to report the results as a letter plus appendices, including general recommendations for remedial action, directed to the client who contracted the investigation.

Keywords (Audience):

First-Year Undergraduate / General

Keywords (Domain):

Chemical Engineering

Keywords (Pedagogy):

Problem Solving / Decision Making

Keywords (Subject):

Metals

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This article has been cited by 3 ACS Journal articles (3 most recent appear below).

Taking Advantage of a Corrosion Problem To Solve a Pollution Problem
Carlos F. Palomar-Ramírez, José A. Bazán-Martínez, Manuel E. Palomar-Pardavé, Mario A. Romero-Romo, and María Teresa Ramírez-Silva
Journal of Chemical Education2011 Article ASAP
- Taking Advantage of a Corrosion Problem To Solve a Pollution Problem
  Carlos F. Palomar-Ramírez, José A. Bazán-Martínez, Manuel E. Palomar-Pardavé, Mario A. Romero-Romo, and María Teresa Ramírez-Silva
  Journal of Chemical Education2011 Article ASAP
  Some simple chemistry is used to demonstrate how Fe(II) ions, formed during iron corrosion in acid aqueous solution, can reduce toxic Cr(VI) species, forming soluble Cr(III) and Fe(III) ions. These ions, in turn, can be precipitated by neutralizing the ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Sedimentation Time Measurements of Soil Particles by Light Scattering and Determination of Chromium, Lead, and Iron in Soil Samples via ICP
Patricia Metthe Todebush and Franz M. Geiger
Journal of Chemical Education2005 82 (10), 1542
- Sedimentation Time Measurements of Soil Particles by Light Scattering and Determination of Chromium, Lead, and Iron in Soil Samples via ICP
  Patricia Metthe Todebush and Franz M. Geiger
  Journal of Chemical Education2005 82 (10), 1542
  A central issue in soil pollution chemistry is how toxic metals such as chromium, arsenic, or lead interact with geosorbents such as soils, clays, and rocks as well as with solid matter suspended in groundwater, that is, colloids. Surfaces of geosorbents ...
  Abstract | Hi-Res PDF | PDF w/ Links
Separation and Determination of Cr(III) and Cr(VI) with Cation-Exchange Chromatography and Atomic Absorption Spectroscopy. An Experiment for Quantitative Methods of Analysis
Ali Bazzi , Bette Kreuz , James Wuokila and Ahmed Maqboul
Journal of Chemical Education2005 82 (3), 435
- Separation and Determination of Cr(III) and Cr(VI) with Cation-Exchange Chromatography and Atomic Absorption Spectroscopy. An Experiment for Quantitative Methods of Analysis
  Ali Bazzi , Bette Kreuz , James Wuokila and Ahmed Maqboul
  Journal of Chemical Education2005 82 (3), 435
  This article reports on the separation and determination of Cr(III) and Cr(VI) with cation-exchange chromatography and flame atomic absorption spectroscopy. A sample containing the two ions is added to a column containing a cation-exchange resin; the Cr(...
  Abstract | Hi-Res PDF | PDF w/ Links