JCE Online Journal of Chemical Education
 | Subscriptions  | Software Orders  | Support  | Contributors  | Advertisers  | 

JCE Print
   Current Issue
 Previous Issues
 Supplements
 Search JCE Index

JCE Digital Library
   DigiDemos
 QBank
 SymMath
 WebWare

JCE Software
   Latest Releases
 Software & Video
 Downloads
 Support

Only@JCE Online
   JCE Online Store
 JCE HS CLIC
 JCE Discussion Forums
   Biographical Snapshots
 ChemEd Resource Shelf
 Featured Molecules
 Hal's Picks
 Project Chemlab
 Reviewed WWW Sites
 "Web-Ed" Articles

About JCE
   Features
 Publications
 Operations
 Outreach
 Contact Us


  Home > JCE Print > Journal of Chemical Education > Issues > 2002  > June  >
In the Laboratory
Analytical Problems Associated with the Analysis of Metals in a Simulated Hazardous Waste
F. M. Dunnivant
Department of Chemistry, Whitman College, Walla Walla, WA 99362
Cover
June 2002
Vol. 79 No. 6
p. 718
Abstract
Analysis of samples subject to physical and chemical interferences can greatly enhance the learning experience in instrumental analysis and environmental chemistry laboratories. This article describes a project-based experience in which students analyze simulated hazardous waste samples (carbonated beverages) for calcium by six techniques: (i) flame atomic absorption spectroscopy (FAAS) using external standard calibration, (ii) FAAS using external standard calibration with a releasing agent (Sr), (iii) FAAS using standard addition, (iv) FAAS using standard addition with a releasing agent (Sr), (v) ethylenediaminetetraacetic acid (EDTA) titration, and (vi) Ca-ion-specific electrode. Not surprisingly, students find that these different techniques yield conflicting results and their assignment is to explain their data in the format of a peer-reviewed journal article. Students report that this series of lab experiments is challenging and highly rewarding. Laboratory experiences such as this one should significantly improve the student's ability to analyze problematic samples and interpret experimental data.
Supplement
A list of required chemicals and instruments and instructions for all of the procedures are available.
*  Contents JCE2002p0718W.doc (Microsoft Word)
*  Download
JCE2002p0718W.pdf

JCE2002p0718W.zip

JCE2002p0718W.sit
More Information
*  Citation
 Dunnivant, F. M. J. Chem. Educ. 2002 79 718.
*  Keywords
 Calcium; Environmental Chemistry; Laboratory Instruction; Metals
*  History
 Created:
Last Updated:		 May 17, 2002
March 16, 2005
<< Previous Article Table of Contents Next Article >>
  Home > JCE Print > Journal of Chemical Education > Issues > 2002  > June  > Page 718


Subscriptions
 Subscription Info
 Order Forms

JCE HS CLIC

Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
 JCE HS CLIC

Contributions Welcome
JCE welcomes your submission
 Contributors' Corner

Advertisers
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
 Recent Advertisers

Be An Ambassador
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.
 Outreach with JCE

Comments to
jceonline@chem.wisc.edu		 Copyright © Division of Chemical Education, Inc., American Chemical Society.
All rights reserved.