Determination of ash content of milk-based powders by Energy Dispersive X-ray Fluorescence

摘要

A simple and rapid method for the determination of ash content by Energy Dispersive X-Ray Fluorescence (ED-XRF) was established and validated for milk-based powders. ED-XRF determination can interestingly replace classical gravimetric methods by reducing the analytical time from several hours to three minutes only. Indeed the results obtained show that ED-XRF gives statistically comparable results to classical methods (furnace and thermo-gravimetric analyzer). The relative expanded uncertainty of the ED-XRF method was found to be 10%, which is acceptable.