Corn is the staple food,and chili is the favorite vegetable in the coal-burning endemic fluorosis areas.Fluorine in corn can be totally extracted by acid lixivium by once.

• 研究表明对燃煤型地氟病区的主要携氟介质玉米一次酸浸即可提取全部酸溶性氟,但辣椒却需要经过多次酸浸提取;