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RECEIVED for review November 19,1985.Accepted January 27,1986. The development of this specific hollow tube system was in part by NASA 'Ontract 16844 and by the Air Resource Board of the State of California.
Masking, Chelation, and Solvent Extraction for the Determination of Sub-Parts-per-Million Levels of Trace Elements in High Iron and Salt Matrices Mary Carol Williams* and Edward J. Cokal Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Thomas M. Niemczyk Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131
The ammonium pyrroiidlnsN-carbodthloate(APCD or APDC) and 4methyl-2-pentanone (methyl Isobutyl ketone or MIBK) system for the chelation and extraction of transition metals was investigated over the pH range of O< pH
