FORM DISTRIBUTION OF Zn, Cd, Pb, Cu IN THE SURFACE WATER OF NORTHWESTERN PACIFIC

<正> This letter presents a study of the form distribution of Zn, Cd, Pb, Cu in surface water of the Northwestern Pacific using anti-adsorption physically-coated mercury film electrode inverse polarography. For Zn, the free form ranges from 3.0 to 6.9 μg/l, the inorganic weak bound from 0.2 to 4.3 μg/l, the inorganic strong bound from 2.6 to 8.3μg/l, the organic bound from 0.80 to 11.4/μg/l, the particulate from 2.0 to 14.4 μg/l and ∑ Zn from 8.6 to 34.8 μg/l. For Cd, the free form ranges from 0.060 to 0.19 μg/l,