Elemental determination of dog food samples using lithium borate fusion and XRF analysis

It is essential to quantify nutrients such as vitamins and minerals in animal feed products, including dog food, to avoid legal and financial consequences related to misbranding. Dog food samples are difficult to analyse since they have a high volatile organic content. To overcome this challenge, special attention must be paid to the pre-treatment of samples prior to the lithium borate fusion step. In fact, special thermal pre-treatments are necessary to remove the organic materials and keep volatile elements of interest. An oxidizer is also needed to complete the oxidation of the partly reduced material during the fusion process. 

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