PROBLEM TO BE SOLVED: To provide a floatable package in which hydrogen peroxide is emitted beyond a certain period of time near a water surface and maintained at a suitable concentration for the purpose of the killing/proliferation suppression of phytoplankton aberrantly growing in lakes and marshes or bays.SOLUTION: There is provided a floatable package having flowing properties near a water surface and sustained release of hydrogen peroxide in the form where a solid composition which generates hydrogen peroxide when brought into contact with water is encapsulated in a water permeable polymer film.COPYRIGHT: (C)2014,JPO&INPIT【課題】湖沼や湾で異常増殖する植物プランクトンの殺滅/増殖抑制のため、水面近傍で一定時間以上過酸化水素を放出させ、適度な濃度で維持させる。【解決手段】水との接触により過酸化水素を生じる固形組成物が水透過性高分子フィルムに密包された形態で、水面近傍での浮上性及び過酸化水素の徐放性を特徴とする浮上性包装体を提供する。【選択図】なし
