What can happen if air or oxygen are used as the driving gas in gas-drive devices?

Using air or oxygen as the driving gas in gas-drive devices can indeed lead to oxidation. When these gases are introduced into an environment where they can interact with certain substances, especially in the presence of moisture, oxidizing reactions can occur. This could be particularly problematic in scenarios involving groundwater, as oxidation can alter the chemical composition of the water and affect the quality of samples collected.

Oxidation can lead to the formation of harmful compounds or precipitates, making it difficult to obtain accurate data from water samples. This situation can compromise the integrity of monitoring results and potentially mislead water resource management decisions.

While the other options may have some relevance in different contexts, they do not directly stem from the use of air or oxygen as a driving gas in gas-drive devices. Thus, oxidation is the most directly relevant concern in this scenario, highlighting the potential risks associated with using these gases for driving mechanisms in water well monitoring and sampling equipment.