: >> ... : >>
: >>>> Anyway, finally, it dawned on me that perhaps : >>>> 30 years involved in electronics with a good : >>>> 20 of them heavily involved in prototyping guitar : >>>> amp designs, might have taken it's toll. So I did some : >>>> research online and discovered that indeed my symptoms : >>>> just might well be those of lead poisoning. : >>
: >> ... : >>
: >>> Lead as a metal does not fume at soldering temperatures, such that it can : >>> be ingested in that way. The fumes and vapour that you see when : >>> soldering, are from the flux contained in the solder, burning away. There : >>> is some evidence that prolongued exposure to the rosin based fluxes used : >>> to date, can cause respiratory tract ailments such as industrial asthma, : >>> and may in extreme circumstances be carcinogenic. : >>
: >> Rosin has Zinc Chloride in it... I've been poisoned with : >> zinc before (welding) and you need to drink milk for : >> the chelating calcium in it. Bad sick headache... not sure : >> of prolonged low-level exposure, but fume hoods are nice. : >> __ : >> Steve : >> . : >>
: > That's a new one on me. I had always understood rosin to be a fairly benign : > material - at least when not heated up - made from naturally occuring pine : > resin. Is the zinc chloride something that has been added in to make the : > rosin suitable for some specific purpose ? : >
: > Arfa : : Man have I woofed up volumes of "solder smoke" over the 25+ years on the : bench. I used to love walking into the shop on a cold clear morning and : waft in the mixture of rosin, pipe, and cigar smoke floating through the : air. There is nothing wrong with me these days, just ask my son, either : head will tell you so. : : -- : Pierre Salinger Memorial Hook, Line & Sinker, June 2004 : : COOSN-266-06-25794
I suppose it should be mentioned that soder for electronic work to my knowledge doesn't have zinc Chloride in it. I made the mistake of using some flux with Zinc Chloride in it years ago on a circuit. It took me quite awhile to troubleshoot why it didn't work right down to it's root cause, the conductivity of the zinc on the PCB )`: : :