Wadsworth Center for Laboratories and

Wadsworth Center for Laboratories and Research, New York State Department of Health,... 

Tadashi Yoshinaii, Wadsworth Center for Laboratories and Research, New York State Department of Healih and School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, U.S.A. (2)... 

The first of two stays of the senior author at Iowa State University was supported by a contract between Ae United Nations Industrial Development Organization and Ae National Chemical Laboratory, administered in the United States by the Carl Duisberg Society, Inc. This work was also supported by the Engineering Research Institute of Iowa State University. The authors thank Ron Niece, Cynthia Wadsworth, Nick Strickland, and Tony Grabski of the University of Wisconsin Biotechnology Center for providing confirmation of the amino acid sequence, and Brian Chait and Ron Beavis of Rockefeller University for attempting matrix-assisted laser desorption mass spectroscopy on Ac enzyme. This article is N(X Communication No. 4950. 

Abstract In an effort to assess the method validation done using ICP-AES in our laboratory for potable water, an Environmental Laboratory Approval Program organized by New York State Department of Health, Wadsworth Center providing the reference material has been undertaken for 14 trace elements and seven other chemical constituents. The certified means for the reference material and the results obtained in our laboratory are compared. The comparisons helped us assess the quality of our work. All the data from the inductively coupled plasma atomic emission spectrometer (ICP-AES) fall into the ranges specified. 

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