Development and characterization of a 9-mm inductively-coupled argon plasma source for atomic emission spectrometry |
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Authors: | AD Weiss RN Savage GM Hieftje |
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Institution: | Department of Chemistry, Indiana University, Bloomington, IN 47405 U.S.A. |
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Abstract: | A new 9-mm (i.d.) inductively-coupled plasma (ICP) torch is described which supports a stable, analytically useful plasma at less than 500 W of r.f. power and 7 l min-1 total argon gas flow. Detection limits, working curves and other analytical characteristics of the new device are compared with those of both a miniature (13-mm i.d.) and conventional (19-mm i.d.) ICP. Although temperatures of the new plasma are somewhat lower than those in the larger plasmas, the new system offers promise for future, miniaturized ICP instruments. |
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