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Preparation of Mixed Food Samples for Trace Metals Analysis Using the CEM MARS 6 and Discover SP-D Systems

August 8, 2016

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Fast, accurate food testing is essential to ensuring the safety and quality of the food supply. As spectroscopic
instrumentation has improved and lowered detection limits, CEM has made advances in microwave sample
preparation technology to simplify the technique and ensure complete digestions. Several types of spiked food
samples and reference standards were prepared for elemental analysis using the MARS 6™ and Discover® SP-D Systems,
both manufactured by CEM Corporation. The samples and reference standards were digested in each of the systems,
diluted, and analyzed, using inductively coupled plasma optical emission spectrometry (ICP-OES), with good
recovery results. Recovery data for the food samples and reference standards prepared in each system is presented
for multiple elements of interest including mercury, arsenic, cadmium and lead.

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