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1,��(sh��)�(y��n)

1.1��(sh��)�(y��n)��ϼ��x��

��(sh��)�(y��n)��ϣ��I(y��)��(j��)��CaCO3,��H2SO4,��Ni(NO3)2•6H2O��Cu(NO3)2•3H2O,��Zn(NO3)2•6H2O��ú��,��ĳ�l(f��)늏S�ṩ��

��(sh��)�(y��n)�x��ԭ��շֹ��Ӌ(j��),��x�ęC(j��),��늟��ع��L(f��ng)��䣬�ߜ��ʽ�t,��

1.2,��Է�ú�ҵ��Ƃ�

��Է�ú�ҵ��Ƃ䣺(1)��һ��ķ�ú��c��Ȟ�2mol/L��H2SO4��Һ��1��4��|(zh��)��w�e��M(j��n)�л�ϣ��90��2h,��(2)�o��30min��x��,��ϴ�죻(3)��100��^ҹ��,��ĥ,��ɵõ��Է�ú�ҡ�

��(f��)�ϸ��Է�ú�ҵ��Ƃ䣺(1)��,��CaCO3��Է�ú�Ұ�һ��|(zh��)��Ȼ�Ͼ��,��һ��ȥ�x��ˮ��ڴ��ϔ��30min,��(2)�x�ĺ��100��º��,��ĥ��(3)��600��±��2h,��ɵõ��(f��)�ϸ��Է�ú��,��

1.3��(sh��)�(y��n)

(1)ȡ100mL��Ni2+20mg/L��ģ�M�Uˮ��F��ƿ��,��{(di��o)��(ji��)pHֵ,��(2)��м��1g��(f��)�ϸ��Է�ú�ң�(3)��ˮԡ��,��һ��ض��һ�Εr(sh��)�g,��(4)ȡ�ӣ�(5)��û��ԭ��շֹ��Ӌ(j��)�y(c��)��Һ��Ni2+��|(zh��)��ȣ��Ӌ(j��)��Ni2+��ȥ��ʡ�

2,��Y(ji��)��cӑՓ

2.1��ͬ��ú�Ҍ�(du��)Ni2+��Ч��Ӱ�

��Ͷ��1g,��Ni2+�ĳ�ʼ�|(zh��)��20mg/L,��UˮpHֵ6��(y��ng)�ض�35��ėl��,��о��˲�ͬ��ú�Ҍ�(du��)Ni2+ȥ��ʵ�Ӱ�,��Y(ji��)��D1��ʾ��

�ɈD1��֪��ú�ҽ�(j��ng)��(f��)�ϸ��Ժ�,��䌦(du��)Ni2+��ܵõ��˴��ȵ��,��һ��棬��^��,��ú��еĽ��cH2SO4��(y��ng)��}��ʹ��ú�Үa(ch��n)��,��һ��,��ʹ�÷�ú�ҵıȱ��e�õ��ƣ��(y��ng)��M(j��n)��,��,��CaCO3��M(j��n)һ��܈F(tu��n)�N��ȱ��e,��,��(f��)�ϸ��Ժ�ķ�ú�Ҍ�(du��)Ni2+��@��ߡ�

2.2,��UˮpHֵ��(du��)Ni2+��Ч��Ӱ�

�UˮpHֵӰ��늺ɼ��x��ڏUˮ�еĴ��ʽ,��M(j��n)��(du��)��^�̮a(ch��n)��Ӱ푡��ڏ�(f��)�ϸ��Է�ú�ҵ�Ͷ��1g,��Ni2+�ĳ�ʼ�|(zh��)��20mg/L,��(y��ng)�ض�35��ėl��£��о��ˏUˮpHֵ��(du��)Ni2+ȥ��ʵ�Ӱ�,��Y(ji��)��D2��ʾ,��

�ɈD2��֪��S��(y��ng)�r(sh��)�g��L(zh��ng)��ͬ�UˮpHֵ�l��µ�Ni2+ȥ��ʳʬF(xi��n)��ͬ��׃��څ��(sh��),��(d��ng)�UˮpHֵ�^�͕r(sh��),��Ni2+��ȥ��^�͡��@��?y��n)�UˮpHֵ�^�͕r(sh��),��Uˮ��H+�ĝ��^��,��H+��(hu��)ռ��(j��)��(f��)�ϸ��Է�ú�ҵĲ��λ�c(di��n)��cNi2+�γɸ�(j��ng)��(zh��ng)��(d��o)��Ni2+��ȥ��Ч��,��S��UˮpHֵ��,��Uˮ��H+�ĝ�Ƚ��ͣ��λ�c(di��n)�cNi2+�l(f��)��,��ʹ��Ni2+��ȥ��@��,��(d��ng)�UˮpHֵ��6�r(sh��)��Ni2+��ȥ��Ч��,��Ni2+��ȥ��ʿ��_(d��)��97.68%,��

2.3��(y��ng)�ضȌ�(du��)Ni2+��Ч��Ӱ�

�ڏ�(f��)�ϸ��Է�ú�ҵ�Ͷ��1g,��Ni2+�ĳ�ʼ�|(zh��)��20mg/L,��UˮpHֵ6�ėl��£��о��˷��(y��ng)�ضȌ�(du��)Ni2+ȥ��ʵ�Ӱ�,��Y(ji��)��D3��ʾ

�ɈD3��֪��S��(y��ng)�r(sh��)�g��L(zh��ng),��ͬ��(y��ng)�ض��µ�Ni2+ȥ��ʵ�׃��څ��(sh��)��(d��ng)��(y��ng)�r(sh��)�g��120min�r(sh��),��Ni2+��ȥ��څ�ڷ�(w��n)��,��ͬ�r(sh��)��S��(y��ng)�ضȵ��,��Ni2+��ȥ��ʳʬF(xi��n)��څ��(sh��),��һ��棬��(y��ng)�ض��܉�ӿ�Uˮ��Ni2+�ĔU(ku��)ɢ��ʣ��һ��,��(y��ng)�ض��Ҳ�܉��cNi2+��H��,��Ķ��Ni2+��ȥ��ʡ�

2.4,��Cu2+,��Zn2+�Ĵ��ڌ�(du��)Ni2+��Ч��Ӱ�

�像Uˮ�г��˺��Ni2+��⣬߀��x��,��о��Cu2+��Zn2+�Ĵ��ڌ�(du��)Ni2+ȥ��ʵ�Ӱ�,��Y(ji��)��D4��ʾ��У��(f��)�ϸ��Է�ú�ҵ�Ͷ��1g,��Cu2+,��Zn2+��Ni2+�ĳ�ʼ�|(zh��)��Ⱦ��20mg/L��UˮpHֵ��6,��(y��ng)�ضȞ�35��,��

�ɈD4��֪��Cu2+��Zn2+�Ĵ��ڌ�(du��)Ni2+��ȥ��Ч��Ӱ��@��(f��)�ϸ��Է�ú�Ҍ�(du��)Cu2+��ʺܿ�,��(y��ng)�M(j��n)�е�10min�r(sh��),��Cu2+��ȥ��ʻ��_(d��)��ƽ��,��(f��)�ϸ��Է�ú�Ҍ�(du��)Zn2+��Ni2+��^С��Zn2+��Ni2+��ƽ��r(sh��)�g��һ��,��

3,��Y(ji��)�Z

��H2SO4��CaCO3��(du��)��ú��M(j��n)�Џ�(f��)�ϸ��,��о��ˏ�(f��)�ϸ��Է�ú�Ҍ�(du��)��像Uˮ̎��Ч��Ӱ�,��Y(ji��)��(f��)�ϸ��Է�ú��@��Ni2+��ȥ��ʡ��UˮpHֵ�ͷ��(y��ng)�ضȾ��(hu��)��(du��)Ni2+��ȥ��Ч��a(ch��n)��Ӱ�,��⣬Cu2+,��Zn2+��ڕr(sh��)�cNi2+�γ��˸�(j��ng)��(zh��ng)��,��ʹ��Ni2+��ȥ��@��͡��(f��)�ϸ��Է�ú��(du��)Cu2+,��Zn2+��Ni2+��?y��n)飺Cu2+>Zn2+>Ni2+,��

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