3 The infrared absorption bands at 1403cm~(-1) and 1355cm~(-1) of montmorillonite and modified montmorillonite were weaken or disappeared after AFB_1 was adsorbed ,which indicated mat the chemical adsorption existed.

• 3 蒙脱石和改性蒙脱石吸附AFB_1后，其红外光谱中1403cm~(-1)和1355cm~(-1)吸收峰消失。