CHED 210 |
| Gas chromatography mass spectrometry is a popular analytical method. The most common application of GC-MS is identification of unknown organic compounds whether for industrial quality control or identification of reaction products. Quantitation can also be achieved by using GC-MS. GC-MS was chosen because it has few limitations. It is good for analyzing compounds that have vapor pressures beyond 10-10 torr and the quantitative accuracy is controlled by the analytical method of calibration. In this experiment an eight component mixture containing citronellal, 1,2,3,4-tetrahydronapthalene, 1-bromo-heptane, tert-amyl alcohol, n-pentane, n-octane, methyl cyclohexane, and 1,2 dichloroethane was analyzed via the method of standard additions. For this particular analysis a key issue was achieving complete baseline resolution for two pairs of compounds. By developing a method of regulating oven temperature it was possible to determine percentage of each of the compounds. Other challenges associated with good quantitation using GC-MS will be illustrated in this work. |
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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 |