OnGuard Ⅱ Ag柱对孔隙水前处理过程的影响及作用

Influence and Effect of the Pre-treatment Process on OnGuard Ⅱ Ag Column to the Pore Water

对孔隙水进行了OnGuard Ⅱ Ag柱前处理。考察了OnGuard Ⅱ Ag柱对孔隙水主要离子的影响,通过前处理,得出OnGuard Ⅱ Ag对孔隙水中Cl-,Li+、Na+、NH+4等有强烈的保留作用,能达到完全去除的效果,相反,对SO2-4及ppm级别的F-、NO-2、NO-3几乎没保留作用,回收率在98%以上。对Br-、I-有一定的保留作用。

Pre - treatment experiment on OnGuard II Ag column to the pore water was carried out. Influence of the OnGuard II Ag column to the main ions in pore water was investigated. Through pre -treatment process, results showed that the retention of OnGuard II Ag column was strong for chloride ion and lithium ion, sodium ion, ammonia ion, etc. , which can be removed completely. On the contrary, the OnGuard II Ag column almost had no retention for the sulfate ion and parts per million＇s fluoride ion, nitrite ion, nitrate ion, and the recoveries were better than 98%, and it had some retention for the bromide ion and iodide ion.