摘要
<正> Urea can be sorbed by coordination （or complexation）with transitional metalpolyacrylic acid complex and transitional metal-polyacrylamide containing polyethylenepolyamine ligand complexes. The experimental results indicate that the sorbents can sorb about 60mg urea per gram of sorbent at 37℃ and the concentration of urea was 1300.0rag/1 in NaH2PO4and Na2HPO4buffer solution （pH=7.0） and the urea sorption capacity was affected by many factors such as other competive ligands, sorption time, pH and the concentration of urea.
Urea can be sorbed by coordination （or complexation）with transitional metalpolyacrylic acid complex and transitional metal-polyacrylamide containing polyethylenepolyamine ligand complexes. The experimental results indicate that the sorbents can sorb about 60mg urea per gram of sorbent at 37℃ and the concentration of urea was 1300.0rag/1 in NaH<sub>2</sub>PO<sub>4</sub> and Na<sub>2</sub>HPO<sub>4</sub> buffer solution （pH=7.0） and the urea sorption capacity was affected by many factors such as other competive ligands, sorption time, pH and the concentration of urea.
