A new innovative way to measure hydrogen sulfide in the air has been developed by a team of researchers. Using a photoacoustic-based sensor, they have created a sensor that is 50 times more sensitive than current methods. This highly sensitive device is capable of detecting hydrogen sulfide concentrations as low as 1 part per trillion in air. The device is made of an optical fiber coupled to a miniature photoacoustic cell and an acoustic sensor. This combination allows for an accurate and real-time measurement of hydrogen sulfide. The researchers believe that this technology could be used to detect hydrogen sulfide leaks in industrial settings, as well as monitor air quality in urban areas.

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source: Phys.org