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The absorbency and adsorption of the self-preparing poly(acrylic acid) superabsorbent(PAAS) are investigated in single and binary nitrate solutions of heavy metal ions.

在Pb2+、Ni2+、Cd2+、Zn2+、Mn2+和Cu2+的一、二元溶液中,PAAS的吸液倍率随时间延长而增加,约50min达吸液平衡,一元金属离子溶液中平衡吸液倍率为160~190g/g,而对Cr3+溶液,最大为120g/g;二元金属离子混合溶液中平衡吸液倍率都在150~180g/g之间,有Cr3+存在时平衡吸液倍率最小。