Acid Digestion of Food in Multiwave 7301 for the Determination of Trace Elements with ICP-MS
Multiwave 7301 provides reliable and fast digestion of food, based on the FDA EAM 4.7 method to meet different requirements around the world.
Analyzing food for trace elements, particularly lead, cadmium, arsenic and mercury, presents several challenges and needs, especially when using ICP-MS for the measurement.
It is crucial to develop and standardize digestion methods to efficiently process different food matrices.
Food samples can contain fat, protein, carbohydrates and fibers that complicate digestion, particularly when running different samples in one run. Elements like mercury and arsenic can be easily lost due to inadequate digestion procedures, leading to inaccurate results.
Within this report the successful digestion of four representative food products with Multiwave 7301 is described. The verification of the stated method is done by quantitative elemental analysis of spiked samples by ICP-MS.
Currently the different standards for trace elements in these products differ from country to country and institution to institution. Therefore, combined “worst-case” limits were considered for the spiking experiment. For this purpose, three standards from Europe, India and the UN/WHO (see 6. References) were combined to give the maximum number of elements and the lowest limit for each element:
- Arsenic: 0.2 ppm
- Cadmium: 0.05 ppm
- Mercury: 1.0 ppm
- Lead: 0.1 ppm
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