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Evaluation of a Tantalum-Tip Electrothermal Vaporization Sample Introduction Device for Microwave-Induced Plasma Mass Spectrometry and Atomic Emission Spectrometry

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An integrated electrothermal vaporization/microwave-induced plasma device has been shown to be a viable source for atomic emission and mass spectrometry. The tantalum-tipped electrothermal vaporizer ensured that no analyte condensation occurred during transport to the plasma and facilitated the formation of an annular helium plasma. Detection limits obtained with atomic emission spectrometry were 0.6, 21, and 2400 pg for Ag, Pb, and I, respectively, and those obtained with mass spectrometry were 0.03, 0.09, 0.75, and 1.5 pg for Ag, Cd, Pb, and Br, respectively. Detection limits were blank limited due to contaminants in the materials used in construction of the furnace. The current study was limited to high-volatility elements.

Keywords: Atomic emission spectrometry; Electrothermal vaporization; Mass spectrometry; Microwave-induced plasma

Document Type: Research Article


Affiliations: 1: Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172 2: National Forensic Chemistry Center, U.S. Food and Drug Administration, 1141 W. Central Parkway, Cincinnati, Ohio 45202

Publication date: November 1, 1991

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