Jet fuel question

From:         KManning@UH.EDU
Organization: University of Houston
Date:         13 Jun 94 10:42:08 
References:   1
Followups:    1
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What can the pros tell me about modern jet fuel?  I have always understood
that its octane is much lower than gasoline; is this true?  Does jet fuel
have to meet certain environmental requires?  Does it have lead (as gasoline
used to?)  Are there any estimates of how much jet fuel emissions harm the
environment, particluarly in comparison to automobiles?
Ken Manning
Houston, Texas