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A micro co-precipitation technique for use in X-ray fluorescence analysis
Authors:Kessler J E  Vincent S M  Riley J E
Institution:Analytical Chemistry Research Department, Bell Laboratories, Murray Hill, New Jersey 07974, U.S.A.
Abstract:An apparatus and a procedure are described for the preconcentration of nanogram amounts of trace elements. Co-precipitation and pressure filtration confine the precipitate to a 1.27 mm diameter spot on a filter membrane. Trace elements in the 10-100 ng range are collected reproducibly and detected with high sensitivity by X-ray fluorescence, by use of a milliprobe instrument. Advantages of the technique for quantitative applications are discussed.
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