给水厂污泥对重金属竞争吸附探究
仇付国,王肖倩,童诗雨,吕华东

Explore the competitive adsorption of heavy metals by water treatment residual
Fuguo QIU,Xiaoqian WANG,Shiyu TONG,Huadong LÜ
表3 4种重金属离子的基本物化性质
Table 3 Basic characteristics of four heavy meatal ions
重金属离子Pb(Ⅱ)Hg(Ⅱ)Cd(Ⅱ)Cr(Ⅵ)
相对原子质量207.20200.60112.4051.99
水解常数负对数pKH7.715.9010.103.90
水合半径/nm0.4010.4210.4260.43
电负性2.332.001.691.66
离子半径/pm1191029544