Measuring hydrogen sulfide (H₂S) gas using a UV-Vis spectrophotometer involves a specific method because H₂S itself is not directly measurable by UV-Vis spectroscopy due to its low absorption in the UV-Vis range. Instead, you typically use a chemical reaction that converts H₂S into a compound that can be detected by UV-Vis spectroscopy. One common method is the iodometric method, which involves reacting H₂S with iodine to form a colored complex that can be quantified.

I will look through the iodometric method. Thank you, Prof. Sara

You can use my gas analyzer device