Under normal circumstances, the tin foil used for cooking should be food-grade "tin foil", and its essence is actually aluminum foil. Experts pointed out that aluminum foil, commonly known as "tin foil", is safer than direct barbecue as long as the product quality is qualified. However, according to media reports, nearly 60% of the tin foil on the market contains excessive lead. When heated at high temperature, the tin foil will release heavy metal elements, which will cause damage to the brain and kidneys.

Overview of aluminum foil

Because of its excellent characteristics, aluminum foil is widely used in food, beverages, cigarettes, medicines, photographic negatives, household items and so on. , usually used as its packaging material; Electrolytic capacitor materials; Thermal insulation materials for buildings, vehicles, ships and houses; It can also be used as decorative gold and silver thread, wallpaper and decorative trademark of various stationery, printed matter and light industrial products. Among the above uses, aluminum foil is the most effective packaging material.