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Adsorption behavior of 59Fe and 195Au on the non-ionic macro-reticular resin , Amberlite XAD-7 is studied. Distribution coefficients (Kd) for both nuclides in hydrochloric acid or lithium chloride solutions above 6M are particularly high.In nitric acid solution below 2M , 195Au is highly adsorbed on the resin but 59Fe is negligible over any concentrations. This resin did not adsorb other important radionuclides such as 54Mn , 60Co, 65Zn, 90Sr, 106Ru, 137Cs and 144Ce at all.Based on such peculiar adsorption behavior , application to selective separation and determination of radio and stable iron in sea water was also studied.

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