The fine particles (magnetic seeds) have the function of adsorbing and flocculating pollutants in water, the range of effects can be widened by several physical and chemical methods.

• 综述了微细粒磁性颗粒(磁种)在水中对许多污染物具有吸附和絮凝作用,用一些物理和化学方法可使其作用范围扩大。