Food safety issues are receiving significant attention, with heavy metal contamination and harmful substance residues being important factors affecting food quality. The presence of heavy metals (such as lead, cadmium, mercury, and arsenic) and harmful substances (such as pesticide residues, veterinary drug residues, and mycotoxins) in food can have severe impacts on human health if they exceed permissible limits. Therefore, conducting testing for heavy metals and harmful substances in food is crucial.

• Heavy metal contamination: Lead (Pb), cadmium (Cd), mercury (Hg), arsenic (As), analyzed using techniques like atomic absorption spectroscopy.
• Biological toxins: Mycotoxins such as aflatoxins and vomitoxin.
• Industrial pollutants: Bisphenol A, plasticizers (phthalates), polycyclic aromatic hydrocarbons, etc.