See this study at tandfonline.com

Published online: 20 Feb 2007

Cheese in a serving of frozen pizzas had up to 14 mg of aluminum, from basic sodium aluminium phosphate; whereas the same amount of cheese in a ready-to-eat restaurant pizza provided 0.03–0.09 mg.

Many single serving packets of non-dairy creamer had ∼50–600 mg aluminum kg−1 as sodium aluminosilicate, providing up to 1.5 mg  aluminum per serving.

Many single serving packets of salt also had sodium aluminosilicate as an additive, but the Al content was less than in single-serving non-dairy creamer packets.

Acidic sodium aluminum phosphate was present in many food products, pancakes and waffles. Baking powder, some pancake/waffle mixes and frozen products, and ready-to-eat pancakes provided the most aluminium of the foods tested; up to 180 mg/serving.

Many products provide a significant amount of Al compared to the typical intake of 3–12 mg/day reported from dietary aluminum studies conducted in many countries.