A research team led by Prof. Chen Chilai from Hefei Institutes of Physical Science of Chinese Academy of Sciences, amplified the detection sensitivity of dissolved methane in water by over 500 times, surpassing 500-fold enhancement, thus reaching baseline methane detection levels in oceans and lakes.
Underwater mass spectrometry achieves 500-fold sensitivity enhancement for dissolved methane detectionhydrates. However, existing data on dissolved methane in the ocean remain limited, leading to significant uncertainties in estimating oceanic methane flux due to sensitivity limitations.
The methane detection limit plummeted from above 16 nmol/L to a remarkable 0.03 nmol/L, exceeding a 500-fold enhancement. The research team's next step will involve conducting in-situ detection studies of background methane over large spatial and temporal ranges based on this technology, as well as in-situ detection studies of directional trace gases such as HThis research lays an important technological foundation for further methane flux calculations, global climate research, plume tracking, and cold seep discovery, according to the team.
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