A The main reasons for the increase in oxygen content when liquid enters the
glove box are as follows:
1. Liquid evaporation, such as organic solvents like ethanol and acetone, releases oxygen-containing gases when they evaporate at room temperature;
2. Liquid reacts with substances inside the glove box, such as strong oxidizing agent hydrogen peroxide, which produces oxygen when in contact with reducing substances, and some liquids react with desiccants to release oxygen and moisture;
3. The sealing problem of the glove box is caused by aging, damage, or improper installation of the sealing components, which leads to an increase in oxygen content due to the entry of external air when transferring liquids.