Imagine a hand palming a human face forever
posted by Winston Smith at
Well, yes. Trace amounts of materials pretty much only matter in catalysis and biological processes (but I repeat myself.)Leaded gasoline was known to be dangerous right from the start. It was a crazy thing to do.Also, lead is heavy, so 4 grams of lead is the equivalent molar amount as 0.25 grams of gasoline.
Also:http://globalleadnet.com/131/the-secret-history-of-lead-a-special-reportfor a history of just how crooked the whole concept of leaded gas actually was. It turns out one reason cars last longer now is that ... they don't use lead!
WS,Does that strike you as too high or too low?(FWIW, a gallon of gasoline weighs ~ 6 kg, so 4 grams is just 0.000 67, or 1/1500. Wikipedia says that the fraction of tetraethyl lead in gasoline was about 1 part in 1,500, which matches.)BestJim
4 grams is the weight of 4 dimes(American currency) so that's not really a lot.
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