CHED 275 |
| N-Alkyl-4-(ω-aminoalkylamino)-1,8-naphthalimides where the aminoalkylamino group has 2 or 3 carbons respond to the presence of transition metal cations in isopropyl alcohol by exhibiting an increase in fluorescence emission intensity near 490 nm in such a way that this change can be used to quantitate the metal ion concentration. One particularly useful application of this observation allows one to monitor the lubricant of automobile engines and diesel engines using a very small (≈20 μL) sample of the oil. We have used this method to monitor the levels of metal ions in oil in several different vehicles: school buses, personal automobiles, and small golf carts. The ratio of fluorescence emission intensity at 490 nm and 520 nm gives plots that show an inflection point. The results and their implications will be discussed. |
|
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 |