CHINESE SYNTHETIC SILICATE AND LIMESTONE CERTIFIED REFERENCE MATERIALS FOR SPECTRAL-ANALYSIS

In 1990, the Institute of Geophysical and Geochemical Exploration prep ared a series of certified reference materials of synthetic silicates and limestones, The silicate series (GSES I) is composed of ii sample s with 28 ingredient elements and the limestone series (GSES II) is c omposed of 9 samples with 29 ingredient elements. The standard series were prepared in ascending element concentration order of 1, 2 and 5. The synthetic standards were analyzed by a large number of laboratorie s with various reliable methods and then certified values were derived .