I would worry a LOT more about the ingredients in the flux than about the lead. That smoke you see while you are soldering and that homes in on your nose and mouth like it has the world's most accurate guidance system, is not the lead. It is the flux or some of it's ingredients. And heaven only knows what is in there. Do use proper ventilation, but primarily for the flux, not for the lead.
On the subject of the lead, just where does it come from? The twilight zone? Er, well no. We mine it from the ground. I fail to see why it is so bad to put it back there, with due cautions, of course. Or recycle it: I believe we have methods of recovering the materials from circuit boards. I think we have problems that are a lot more pressing than what these environmental fanatics are constantly making us waste our money and time on. And their methods usually produce more "pollution" anyway.
Paul A.
---In Homebrew_PCBs@yahoogroups.com, <stefan_trethan@...> wrote :
Lead doesn't vaporize at soldering temperatures, you'd need 1700°C for
that, so it's unlikely.
Also, most inhaled lead (mainly from lead dust) is absorbed into the
blood, it doesn't stay in your lung.
ST
On Sat, Jul 19, 2014 at 9:15 AM, Cristian
crissstian@...[Homebrew_PCBs] <
Homebrew_PCBs@yahoogroups.com> wrote:
> I'm a 70 years old electronics engineer.
> I'm not a smoker, but my pulmonary X-ray image suggests to my doctor
> that I'm a smoker (darker image).
> Is that the lead vapors or what?
> If lead, is there any way to get rid of that, please?
> Cristian
>
>