The mineral of Erdos Analcime from NeiMongol Area was studied by chemical analysis,XRD,FT-IR,DSC,N_2 static adsorption at 77 K and the cation exchanges of K~+,NH~+_4 and Cu~(2+).The results showed that Erdos Analcime belongs to the ferric-magnesium typed analcime,in which hydrocerussite,orthoclase,jadeite and ferric oxide are company minerals,and Fe~(3+) takes part in the framework construction of analcime because the parameter of crystalline cell of the analcime in the mineral is larger than that of the ideal crystalline cell.Meanwhile,the structural hydroxyles of analcime and hydrocerussite in the mineral are released by structural water at 500 ℃~700 ℃,bond water is released at 120 ℃~360 ℃.Because the specific area,the pore volume and the cation exchange capacities of K~+,NH~+_4 and Cu~(2+) are smaller,the modified method of Erdos Analcime must be studied further in order to be applied.

由于环境地质因素,地下水中砷的超标(＞0.05mg/L)引起饮用水地方性砷中毒病症已受到国内外的关注.美国、印度、墨西哥、阿根廷、孟加拉等国都有饮水砷中毒的报道,我国台湾、新疆、内蒙古、山西等地数百万人也面临着饮水砷的威胁,饮水砷中毒已是水环境卫生中亟待解决的问题.目前国内外治理饮水砷污染主要采用活性氧化铝和氢氧化铁的吸附作用,以及阴离子交换树脂的离子交换作用.近来有天然沸石或负载Al2O3的天然沸石吸附饮水砷的报道,还有离子交换树脂和天然沸石联合使用去除饮水砷的报道.我们试图在斜发沸石骨架上磷(V)铝同晶取代,改变沸石骨架电荷性质,使之具有阴离子交换能力,以去除饮水砷.从实验结果看,效果尚好,有推广应用的前景.