| http://www.w3.org/ns/prov#value | - These traces are diagnostic of water, carbon dioxide, oxygen, and two forms of sulfur (sulfur dioxide, the oxidized form, and hydrogen sulfide, the reduced form) measured by the QMS. The second step in the analysis was to send a portion of the gas released from the sample to the tunable laser spectrometer (TLS) to measure isotopes of carbon, oxygen and hydrogen, in both water and carbon dioxide.
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