CHED 205 |
| The search for better (accurate, sensitive, versatile, fast and simple) methods for toxic metal detection is an on-going research focus for environmental analytical chemistry. The goal of this research project is to compare two sample pretreatment methods for chromium speciation. The first is based on a simple, selective precipitation and extraction method to separate Cr(III) from Cr(VI) ions prior to detection by an ICP-OES instrument. The second method uses a Chelex 100-equivqlent ion-exchange resin to selectively sequester Cr(III) ions for pre-concentration and detection. The latter technique will also be evaluated regarding its ability to simultaneously pre-concentrate Pb and Cd ions under the same condition used for sequestering Cr(III) ions. Results obtained from using both methods to analyze cement and clay samples will be compared. |
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Undergraduate Research Poster Session: Analytical Chemistry
11:00 AM-1:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |