�ˮһ��Ҫ��A��ˮ��,��

��r(sh��)�g��2008-04-14 09:26 ��Դ��vˮ�W(w��ng) ��: ��x��1405

�D��Ї��˽��I��(j��ng)��(j��)�о��ˮ�ИI(y��)ί�T��ؕ��L

        �ᡢ�A��ڻ��W(xu��)��pHֵ��ʾ,��pH=7��,��pH��7��ԣ�pH��7��A��,��

        1,��ˮ�|(zh��)��(bi��o)��(zh��n)��pHֵָ��(bi��o)

        ��1��l(w��i)��M��WHO��ˮˮ�|(zh��)��(zh��n)�t��]�о��wָ��(bi��o)��f��pH�и��g��,��pHӰ�ζ�X,��з��ζ��ʹ��ȸ��Ч,��pH≤8��,��

        ��2��EPA��h(hu��n)��o(h��)��ˮˮ�|(zh��)��(bi��o)��(zh��n)��һ��ˮ��]�о��wָ��(bi��o)��ˮ��6.5��8.5

        ��3��W�ˣ�EC��ˮˮ�|(zh��)��(bi��o)��(zh��n)��6.5��9.5,��ƿ�b��Ͱ�b�ă�ˮ,��pH��Сֵ��(y��ng)��4��5��ƿ�b��Ͱ�b��ˮ,��Ȼ��˹��̼,��Сֵ��(y��ng)��͡�

        ��4��ձ��ˮˮ�|(zh��)��(bi��o)��(zh��n)��5.8��8.6,��

        ��5��҇�GB5749��ˮ�l(w��i)��(bi��o)��(zh��n)��6.5��8.5,��GB17323ƿ�b��ü��ˮ��5.0��7.0��ǺͰl(f��)�_(d��)��Ҙ�(bi��o)��(zh��n)��һ�µ�,��

        ��ˮpHֵ��f,��Ϙ�(bi��o)��(zh��n)��ˮ��ã��ںȉA��ˮ��߀�Ǻ��ˮ��,��

        2,��(sh��)��,��ܶ��Ȼ�ĺ�ˮ��ƫ��Եġ��磺

        �V��ʡ��Q�h��ɽ��µ�Ȫ��pH��6.7,��

        �㽭ʡ��л��Ȫ��pH��5.8,��

        ��ĳЩ��Ȼˮƫ�A�ԣ��̫��ˮ��Ƴɵ��ԁ�ˮ,��ˮ�|(zh��)��,��ˣ��ƫ��߀��ƫ�A�ԁ턝��ˮ�|(zh��)�ĺÉ��ǲ��ƌW(xu��)��,��Ҫ��Ƿ��ˮ�|(zh��)��(bi��o)��(zh��n),��ˮ�е��s�|(zh��)��Ⱦ��r��Q��ˮ�|(zh��)�ĺÉġ�

        3,��ˮ�Ǻȵ�θ��,��θ�ĭh(hu��n)��Եģ�pH�s��2��3,��ã��1��2��,��θҺ��һ�N��^��(qi��ng)�ľ��_��Һ��ʲôˮ,��ȵ�θ��,��pHֵ��׃��

        4,��ʳ��“��A��”��“��A��”��½�(j��ng)��պ��w��(n��i)��ꐴ��x�γɵĮa(ch��n)��A�ԣ��ȫ�Ƕ��,��Еr(sh��)��෴��

        ��(sh��)��ʳ��i,��ţ,��u,��,��~��r,��з�Ȅ��⣩�͹��ʳ���,��ۡ��ȣ��“��”ʳ��,�� (sh��)�߲ˣ��,��_��[,��˵ȣ�,��ˮ��O��㽶,��ӡ��ݮ�ȣ���Ģ��ȣ�,��Ȟ�“�A��”ʳ��,��

        ˮ�ǼȲ��ᡢҲ��A��ʳ��,��

        �u��ĵ��S��Ե�,��A��ʳ���(sh��)�߲�,��ˮ��ʳ�׵ȵ��Ե�,��“�A��”ʳ�

        ��,��“�A��”ʳ��ͺȉA��ˮ��ȫ�Ƕ��,��“�ȉA��ˮ��”��ȫ��ǟo��(j��)��,��ƌW(xu��)��`��(d��o),��