METHOD The particle size,PH,disensibility,adsorption,arsenic and plumbeous of smectite in shandong were identified or measured.

• 方法通过对不同产地的蒙脱石形状、颗粒度、酸碱度、膨胀倍、吸附力、重金属含量及定性鉴别等项目的比较来考察其药用价值。