Results showed that the maximum adsorption amounts of the four heavy metal ions decreased in the order of Pb2+>Cu2+>Zn2+>Cd2+ on ammonium saturated zeolite,whereas the desorption amount and desorption ratio were in the order of Cd2+>Zn2+>Cu2+>Pb2+.

• 研究结果表明:铵饱和沸石对4种重金属离子的吸附量大小顺序依次为Pb>Cu>Zn>Cd,而解吸量和解吸率的大小顺序为Cd>Zn>Cu>Pb,这主要与四种金属离子的水合离子半径和水合能密切相关。