Neutron Activation Analysis of Iron Ion in Dissolved Trace Water in the Mixture of Safflower Oil and Iron (III) Oxide

The effect of water dissolved in safflower oil on dissolved amount of iron were studied. Safflower oil samples containing different amounts of the water dissolved in oil were prepared and iron oxide was added in those oils. Those samples were heated under reduced pressure at 30°C for 624h. The dissolved amount of iron was measured by means of neutron activation analysis. Consequently, the dissolved amount of iron increased from 0.45 to 2.82ppm when dissolved water increased from 43 to 2, 200ppm, and the linear relation between dissolved water and dissolved amount of iron was apparent.Under the same conditions, the effect of dissolved water on dissolved amount of iron in mixture of safflower oil-decanoic acid (weight ratio 1 : 1) was also studied. The results indicated that the dissolved amount of iron in mixture containing water decreased, as compaired with that of safflower oil containing dissolved water.