title: Spectrophotometric determination of beryllium with calcichrome.
abstract: A method is established for the spectrophotometric determination of small amounts of beryllium as a 1:1 complex with Calcichrome in slightly acidic solution. Beer's law is obeyed over the range 0.05-0.6 ppm Be in the final solution and the apparent molar absorptivity is 9.7 x 10(3) l.mole(-1). cm(-1) at 625 nm. Up to about 15 mug of beryllium in the final solution can be sensitively and selectively determined with a relative error of less than 2% in the presence of EDTA as masking agent.
authors.affiliation: Institute of Materials Science, University of Tsukuba, Niihari, Ibaraki, 305, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Einaga
authors.forename: H
authors.initials: H
authors.lastname: Ishii