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Aluminium, Arsenic (total), Cadmium, Lead, Nickel
The presence of metals in food is of particular concern due to their toxicity. Metals such as arsenic, cadmium and lead are naturally occurring chemical compounds. They can be present at various levels in the environment, e.g. soil, water and atmosphere. Metals can also occur as residues in food because of their presence in the environment, as a result of human activities such as farming, industry or car exhausts or from contamination during food processing and storage. People can be exposed to these metals from the environment or by ingesting contaminated food or water. Their accumulation in the body can lead to harmful effects over time and their presence in foodstuffs is strictly regulated.
Their effects are various and far reaching, such as inhibiting nutrient absorption in the case of cadmium, whilst nickel is considered a sensitizer.
Tea is one of the most popular beverages in the world. Monitoring heavy metal concentrations in tea is important in the quality evaluation of this widely consumed product.
Fapas quality control materials can be used to validate whether a testing instrument or process is operating within pre-defined specifications. This validation process makes sure your test results are as close to the true value as possible, and therefore your testing process is a credible as it can be.
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