zone melting method of preconcentration
A technique based on the different @S05740@ of microcomponents in the liquid and solid matrix. It has a limited field of application for the analysis of fusible (and @S05900@) substances.
PAC, 1979, 51, 1195. (Separation and Preconcentration of Trace Substances. I-Preconcentration for Inorganic Trace Analysis) on page 1200 [Terms] [Paper]