Gases

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Volcanic gases are the most important volcanic products that influence the atmosphere.

Observed Volcanic Gases
Gas Chemical Formula First Observed
Water H2O
Carbon dioxide CO2
Carbon monoxide CO
Sulphur dioxide SO2
Hydrogen sulphide H2S
Sulphur S2
Hydrogen chloride HCl
Hydrogen fluoride HF
Hydrogen H2
Silicon tetrafluoride SiF4 1996[1]
  1. ↑ Francis, P., C. Chaffin, A. Maciejewski, and C. Oppenheimer (1996), Remote determination of SiF4 in volcanic plumes: A new tool for volcano monitoring, Geophys. Res. Lett., 23(3), 249–252, doi:10.1029/96GL00022.
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