CHED 199 |
| Tungsten coil atomizers have already been successfully employed in portable, battery powered by bulky atomic absorption spectrometers. On the other hand, atomic emissions set-ups do not require external light sources since the atomizer works as the excitation source, and the decreased weight and size makes them better equipped for fieldwork. Metallic atomizers, such as tungsten coils, are of great interest because of their lost cost and availability, fast heating rates, and small power supply requirements. Tungsten coil atomizers do not require cooling water, as the small size dissipates heat rapidly. Tungsten coil atomic emission has been shown to have comparable analytical figures of merit (sensitivity, precision, limits of detection and linear dynamic range) to flame and plasma emission spectrometers for over 20 elements. Our research outlines design improvements to emission detection that enhance emission signals with minimal blackbody emission for several elements including Co, Cs, Ir, Se, Sr, Tc, and Yb. |
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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 |