Читать книгу X-Ray Fluorescence in Biological Sciences - Группа авторов - Страница 79

Initially the hair sample was prepared by grinding in a ball mill until powderized (Figure 6.1a), and then crushed to a fine homogeneous mass by a carbide mortar and pestle (Figure 6.1b). A pellet of 2.5 cm diameter was prepared from the powdered mass using a hydraulic press pellet maker (Specac) (Figure 6.1c), applying 10 tons pressure, for subsequent analysis by EDXRF. The pellets from the standards were also prepared similarly for construction of calibration curves. All pellets (Figure 6.1d) were preserved in desiccators until irradiation.