У��ϵ��(sh��)��y��x�ӏUˮ�е�COD

��r(sh��)�g��2012-11-15 22:20 ��Դ��W(xu��)��Ӌ(j��)�� : ��x��2893

ժҪ:��У��ϵ��(sh��)��(du��)�y��x�ӏUˮ�еĻ��W(xu��)��(COD)�M(j��n)��x�Ӹɔ_У��,��(sh��)�H��Ʒ�y��r(sh��),�ȼ��,��ˮ��x��ȫ��,�ټ��y�M(j��n)�И�Ʒ�߻��,ͨ�^�ζ��õ�COD��^ֵ,�۳��x��У��ֵ��õ��ƷCOD�挍(sh��)ֵ,��m��ڸ��x�ӵ�COD��Ʒ�Ĝy��

�P(gu��n)�I�~: COD,��x��,�Uˮ,У��ϵ��(sh��)

��W(xu��)�� (COD )�ǿ��ƺ��u(p��ng)�r(ji��)��ˮ�ŷŵ��Ҫָ��(bi��o),��ڜy��x�ӵ�Ӱ푺ܴ�,��x�ӿ��Ա��t��COD�ı��^ֵ,��CODƫ��,��Ը��x��,��COD�ďUˮ�y��һֱ��о�ӑՓ�ğ��c(di��n),��īI(xi��n)��(b��o)��S��Q�k��[ 1 - 9 ],��й��[ 6 ]��Ț�У��[ 7, 8 ]��ǻ��COD��(bi��o)��(zh��n)��Ĝy��l��[ 10 ]��C l-��C l2,ͨ�^�Ț�У��߹��(du��)COD�y��ֵ�M(j��n)��У��ڌ�(sh��)�H��,��Ҫ��߻��Ag2SO4, Ag2SO4�^��ؼ��ʹ��x��Ag+�c��Ʒ�е�Cl-�l(f��)��(y��ng)�a(ch��n)��AgC l��,Ӱ�C l-��Ч��[ 2 ],��ڌ�(sh��)�(y��n)�аl(f��)�F(xi��n)�a(ch��n)��AgC l��(hu��)�ڏ�(qi��ng)�ᷴ��(y��ng)�wϵ��x�ⷽ��M(j��n)��,��x��ʲ��_��,�oҎ(gu��)�ɿ�ѭ,��ڴ߻��ڵėl��\(y��n)��Ț�У��߹��ʹ�y��Y(ji��)��Ĳ��(d��ng)��^��,��Ag+��Č�(du��)�߻��Ҳ��(hu��)��һ��Ӱ�[ 9 ],��

�P�߲��У��ϵ��(sh��)��COD�y��x�ӵĸɔ_,��x��ױ��c�y�x�Ӱl(f��)��(y��ng),��ڷ��(y��ng)ǰ��Ӵ߻��,�ȼ�25 mL��ᷴ��(y��ng)30 m in,��Cȫ��x�ӱ��Ԛ�B(t��i)��ʽ�x�_,�ټ��y-��Һ,�^�m(x��)��(y��ng)90 m in,��s��ζ�,�õ�COD��^ֵ (COD��^) ,�۳��x��ؕ�I(xi��n)��CODУ��ֵ (CODУ��) ,�õ��Ʒ��COD�挍(sh��)ֵ (COD�挍(sh��)) ,��COD�挍(sh��)= COD��^-CODУ��,��ͨ�^��(sh��)�(y��n)�Ҙ�Ʒ��,ԓ��Ч��,�؄e�m��ڸ��x�ӡ��COD��Ʒ�Ĝy��,��

1��(sh��)�(y��n)��֡��

��(sh��)�(y��n)��Ҫ�x��cԇ��:��(bi��o)��(zh��n)ĥ��ǟ�ƿ: 250 mL;33 cm��COD��b��;�؜�늟��: KDM��,ɽ�|۲�Ǹ߿ƃx��S;��y-��Һ:��500 mL��м��25 g��y,��1��2 d,��r(sh��)�u��(d��ng),ʹ��ܽ�;�Ȼ��c:��Ȼ��c (��(zh��n)��(y��u)��(j��)�� )��(n��i),��500��600��ӟ�40��50 m in,��s��Ҝغ�Q��

Ԕ��(x��)��(n��i)��Ո(q��ng)�鿴��֣�

����D(zhu��n)�d��ǳ��ڂ��f��Ϣ֮Ŀ��,��Ё�Դ��(bi��o)ע�e(cu��)�`��ַ��ĺϷ��(qu��n)�棬Ո(q��ng)��߳֙�(qu��n)��C��c��W(w��ng)(li��n)ϵ,��҂��r(sh��)��,��h��x�x,��