Venus: Halide cloud condensation and volatile element inventories

Details Venus: Halide cloud condensation and volatile element inventories Venus: Halide cloud condensation and volatile element inventories

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982plap.nasa...27l&link_type=abstract

In its Planetary Atmospheres Program p 27-35 (SEE N82-22112 12-88)

Computer Science

Aluminum Chlorides, Antimony Compounds, Arsenic Compounds, Chemical Clouds, Halides, Venus Atmosphere, Geochemistry, Planetary Evolution, Thermodynamic Properties

Scientific paper

Several Venus cloud condensates, including A12C16 as well as halides, oxides and sulfides of arsenic and antimony, are assessed for their thermodynamic and geochemical plausibility. Aluminum chloride can confidently be ruled out, and condensation of arsenic sulfides on the surface will cause arsenic compounds to be too rare to produce the observed clouds. Antimony may conceivably be sufficiently volatile, but the expected molecular form is gaseous SbS, not the chloride. Arsenic and antimony compounds in the atmosphere will be regulated at very low levels by sulfide precipitation, irrespective of the planetary inventory of As and Sb. Thus the arguments for a volatile-deficient origin for Venus based on the depletion of water and mercury (relative to Earth) cannot be tested by a search for atmospheric arsenic or antimony.

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