1. The complex of Europium with sulfosalicylic acid and phenanthroline asas waterborne - polymer of acrylate has been synthesized.

2. The method is based on the catalysis of phenanthroline to the discoloring reaction of bordeaux R oxidized by potassium periodate in the dilute acetic acid solution.

3. The liposome peroxidation, however , initiated by phenanthroline copper chelate was prerented by · OH scarvages and EDTA.

4. Phenanthroline is used as indicator and ammonium ceric nitrate standard solution for titration in the determination.

5. Chemical products for industrial use . General method for determination of iron content. 1,10 phenanthroline spectrometric method.

6. The accurate results of determination can be obtained easily and quickly, when the samples were treated by solvent method, and the iron contents were determined byo- phenanthroline spectrophotography.

7. Method The contents of Fe and dextran were determined respectively byo - phenanthroline and anthrone methods.