Analytical methods are developed for the chemical characterization of solid (powder) milk samples using laser induced breakdown spectroscopy (LIBS) and compared to "reference" methods including  elemental analysis using solution/digestion ICP-MS and LA-ICP-MS using pellets. The pellets sampling/sample preparation method has been previously developed within a IAEA Coordinated Research Project (CRP D52038) entitled Accessible Technologies for the Verification of Origin of Dairy Products as an Example Control System to Enhance Global Trade and Food Safety. A comparison of the LIBS data to the reference techniques for certified reference materials (IAEA 153) suggests that LIBS is a viable alternative as a much less expensive and field-deployable instrumentation for milk powder characterization.  LIBS may be used to detect common adulterants as well as to confirm country of origin and authenticity of origin. <br/>

Combating food fraud in the developing world with analytical chemistry

255th National Meeting (2018)

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