PROBLEM TO BE SOLVED: To provide an aqueous solution that is high activity and easily available.SOLUTION: The aqueous solution contains, as main components, a nitrite ion, a hydrogen peroxide, and a buffer component that has pH buffering capability within the range of 6 to 8 and a concentration within the range of 0.5 mM to 100 mM, and the pH of the aqueous solution falls within the range of 6 to 8.SELECTED DRAWING: Figure 1ACOPYRIGHT: (C)2017,JPO&INPIT【課題】高い活性を有し、簡単に利用可能な水溶液を提供する。【解決手段】水溶液は、主たる成分として、亜硝酸イオンと、過酸化水素と、pHが6以上8以下の範囲に緩衝性を有し、濃度が0.5mM以上100mM以下の緩衝成分とを含有し、pHが6以上8以下である。【選択図】図1A
