The releasing curve also indicates that most of the absorbed iodine in palygorskite occurred in its intracrystal tunnel space, instead of on the external surface of the mineral.

• 此外，盐酸提取碘的时间曲线还表明，甘肃坡缕石中的碘最有可能赋存在载体矿物的晶内隧道孔中，而非矿物表面。