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ED-XRF as a Tool for Rapid Minerals Control in Milk-Based Products
- Perring, Loic, Andrey, Daniel
- Journal of agricultural and food chemistry 2003 v.51 no.15 pp. 4207-4212
- calcium, chlorine, dairy products, iron, minerals, normal values, pellets, phosphorus, potassium, rapid methods, spectroscopy, sulfur, zinc
- An ED-XRF method for the rapid determination of a series of analytes (phosphorus, sulfur, chlorine, potassium, calcium, iron, zinc) in milk-based products has been developed and validated. The investigated samples were commercial products obtained from various parts of the world. Reference values measured by inductively-coupled plasma-optical emission spectroscopy and by potentiometry for chloride were used to calibrate the ED-XRF. Calibrations were established with 30 samples, and validation was made using a second set of 30 samples. An evaluation of this alternative method was done by comparison with data from the reference methods. Pellets of 4 g were prepared under 2 tons of pressure. For each sample, 3 pellets were prepared and analyzed. Limits of quantification and repeatabilities were evaluated for the described analytes.