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CAER Seminars

NEW DIRECTIONS IN PLASMA SOURCE MASS SPECTROMETRY (...or where DWK has been since IMMR)

Speaker:
Dr. David W. Koppenaal
Pacific Northwest National Laboratory
Richland, WA 99352

Date:
Friday, April 17, 1998 10:00 am
Ben Bandy Conference Center
Center for Applied Energy Research

Abstract:
Plasma source mass spectrometry (specifically inductively coupled plasma mass spectrometry or ICP/MS) has revolutionized trace elemental analysis since its introduction and commercialization in the early 1980s. The opportunity to become involved in the early development of this technique was a major factor in my leaving IMMR for the University of Texas in 1984.

During my time in Austin, numerous instrument and technique refinements were instituted and many geochemical applications of the techniques were demonstrated. In 1988, I moved to Pacific Northwest Laboratory to help build an ICP/MS capability there. We were among the first groups in the world to apply the technique and demonstrate efficacy for radioanalytical samples and problems. During the last several years, we have been involved with new-generation technology involving ion trap techniques and gas-phase ion-molecule chemistry. The former device allows us to capture or trap analyte ions for millisecond time periods, enabling the utilization of gas-phase chemistries to alleviate polyatomic ion and even isobaric ion interferences.

These interferences have been the chief dilemma in ICP/MS, and such techniques offer hope for ultimately achieving interference-free analysis. These developments and the interest it is generating within the community will be the chief topic of this presentation.