Dissolved gases are molecular species such as O₂, CO₂, N₂, CH₄, and noble gases that exist in aqueous or other liquid phases at concentrations governed primarily by gas–liquid equilibrium (e.g., Henry’s law), temperature, pressure, and salinity. They play critical roles in biogeochemical cycles, redox processes, and aquatic ecosystem metabolism, influencing parameters such as pH, alkalinity, and oxidation–reduction potential. In research, dissolved gases are quantified using techniques like membrane inlet mass spectrometry, gas chromatography, and optical sensors, and are essential tracers for processes including gas exchange, primary productivity, groundwater–surface water interactions, and anthropogenic impacts on aquatic environments.
Could lumpy metallic rocks in the deepest, darkest reaches of the ocean be making oxygen in the absence of sunlight?
Earth Sciences
Mar 17, 2025
3
1234
Gases are essential for many chemical reactions, and bubbles are one way for these gases to be held in solution. When compared to larger bubbles, nanobubbles have increased stability—meaning that they can remain in a solution ...
Nanophysics
Dec 16, 2024
0
72
Carbon dioxide from the atmosphere can dissolve in oceans, lakes and ponds, forming bicarbonate ions and other compounds that change water chemistry, with possible harmful effects on aquatic organisms. In addition, bicarbonate ...
Nanomaterials
Aug 25, 2021
0
177
