现在都认为铝盐有神经毒性。因此很多人研究铝是从那里并且怎样进入人体的。第一个怀疑对象就是铝制食具和炊具。本来,人们已经知道铝制食具或炊具表面有一层氧化物膜,它是对弱酸弱碱惰性的。事实上也确如此。有人做过实验:在铝锅中煮沸含柠檬酸的pH～3的溶液10分钟,溶出的铝只有0.2ppm。当然pH对溶出速度和溶出量是有关的。例如有人用碱性溶液在铝制容器中煮沸,确有较多的铝溶出,不过那样高的pH很少在食物中遇到。 Aluminum salts are now considered neurotoxic. So many people study how aluminum comes from there and how it enters the body. The first suspect is aluminium utensils and cooking utensils. Originally, it has been known that there is an oxide film on the surface of aluminum food utensils or cookware, which is inert to weak acids and weak bases. In fact it is true. Some people have done experiments: in the aluminum pan boiled with a pH 3 solution containing citric acid for 10 minutes, the dissolved aluminum is only 0.2ppm. Of course, the pH is related to the dissolution rate and the amount of dissolution. For example, some people boiled with an alkaline solution in an aluminum container did indeed have more aluminum dissolved, but that high pH was rarely encountered in the food.