As for this invention, the water absortion power material which can the process which irradiates the polymer which was treated A), the surface of granularity the water absortion power polymer which has not built a bridge, process, and B which are treated with the blend which includes with the water composition and at least one succession metal salt) A) by with ULTRAVIOLET RADIATION light, by the manner which is included, it regards that production manner, and the goods which include the said water absortion power material.本発明は、A) 粒状の、表面架橋されていない吸水性ポリマーを、水性溶剤と少なくとも1つの遷移金属塩とを含む混合物で処理する工程、および B) A)によって処理されたポリマーをUV光で照射する工程、を含む方法によって得られる吸水性材料、その製造方法、および該吸水性材料を含む物品に関する。