Direct Solid Sampling Via Plasma Gun-ICP-AES

Authors

Joel Goldberg

James McKinstry

Whitney Minnick

Ed Navarre

Published

January 1, 1997

Abstract
The plasma gun atomization cell developed in our laboratory has demonstrated the ability to sample even the most refractory solid materials as efficiently as it samples aqueous solution residues. This has allowed us to use pure elemental standards for direct elemental quantification in solid powder samples using a tandem plasma gun/ICP (PG-ICP) emission system. We have also developed external sampling methods with allow the plasma gun to be used for the analysis of bulk solid materials. PG-ICP analysis results for NIST SRMs and USGS Reference Rocks will be presented as well as initial results of bulk sampling plasma gun studies. Lastly, the potential of a new high-frequency plasma gun device will be discussed with respect to its solid sampling properties.

1997 FACSS Conference; Providence, RI., U.S.A.