Avgas is leaded petrol (gasoline in the US), used in reciprocating piston engines. That is, small planes.
(You might also find it in wankel or rotary compression/combustion engines, though those are rare.)
Gas turbines, which you'll find on major airliners and many propellor craft (turboprops) burn what's effectively kerosene.
The lead is added to petrol to avoid knocking, a problem where you're compressing fuel in a cylinder (or again, compression-rotary engine). It's not used in most commercial aviation.
Yes, if there are small craft flying out of your commercial airport, you'll have some lead exposure. But it's your small and personal craft that are the bigger concern.
(As with several other cautions here, the advice you're giving is incomplete, misleading, or in several cases, simply wrong. Lead in paint and plumbing, yes. Mercury, yes. Teflon? Maybe. Aluminium? No.)
(You might also find it in wankel or rotary compression/combustion engines, though those are rare.)
Gas turbines, which you'll find on major airliners and many propellor craft (turboprops) burn what's effectively kerosene.
The lead is added to petrol to avoid knocking, a problem where you're compressing fuel in a cylinder (or again, compression-rotary engine). It's not used in most commercial aviation.
Yes, if there are small craft flying out of your commercial airport, you'll have some lead exposure. But it's your small and personal craft that are the bigger concern.
(As with several other cautions here, the advice you're giving is incomplete, misleading, or in several cases, simply wrong. Lead in paint and plumbing, yes. Mercury, yes. Teflon? Maybe. Aluminium? No.)