茶树是少数能从土壤中富集铝的植物之一。铝以氢氧化铝的形态累积在茶树叶片的表皮细胞中，在老叶中其含量可高达l％以上。成茶中铝的含量为300～150Omg／kg，茶汤中为3～lling／I，。经许多国家测定表明，人体通过饮用饮料（包括茶、咖啡等）摄入的铝量占每天摄入铝总量的5％ Tea tree is one of the few plants that can accumulate aluminum from the soil. Aluminum accumulates in the form of aluminum hydroxide in the epidermal cells of tea leaves, its content in old leaves can be as high as 1% or more. The content of aluminum in tea is 300 ~ 150Omg / kg, 3 ~ lling / I in tea. As determined by many countries, the amount of aluminum consumed by the body through drinking beverages (including tea, coffee, etc.) accounts for 5% of the total daily intake of aluminum,