Post by thread:[EE]: Was copper, now Lead?

In message <001501c01a63$8293c260$180d53d1@c525lab>, robertf <spam_OUTrobertfTakeThisOuTMICROBALANCE.COM> writes >Hi, > >Has anyone looked into the effect of lead vapor emmited during soldering? >I heared lead sublimes and therefore will be around if there are any sources >around, i.e-computers, TVs, solder spool, etc. I've recently being part of a test by the 'Health and Safety Executive' in the UK into possible dangers from soldering in a service environment. During the test I asked what sort of lead levels were dangerous, they replied that the health risks being assessed were from the FLUX!! not the lead!. Apparently the fumes from the flux can cause asthma, although they did admit that in all of the service departments they tested there were no asthma sufferers (nor any how had left because of breathing problems). As far as the UK authorities are concerned there is no danger from soldering using lead/tin solder - only the flux, hence the recent surge of new fluxes (which don't work well!). -- Nigel. /--------------------------------------------------------------\ | Nigel Goodwin | Internet : .....nigelgKILLspam@spam@lpilsley.co.uk | | Lower Pilsley | Web Page : http://www.lpilsley.co.uk | | Chesterfield | Official site for Shin Ki and New Spirit | | England | Ju Jitsu | \--------------------------------------------------------------/ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: "[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's

More about lead, Australia used lead pipes for many years for domestic water pipes, still common in some areas. I prefer the taste and clarity of water from lead pipes, most of the newer stainless steel pipes put an awful bitter metallic taste in the water, with white oxides suspended and who knows what heavy metals leach from the stainless steel. At least with lead you know where you stand. They say very little lead commutes into the water, very low oxidation in the pipes compared to alloys like stainless and regular steels. I have breathed lead solder fumes for 25 years, and discussed this with my doctor. He told me of another of his patients who was a stained-glass maker who melts lead in large quanities and breathed much more fumes than me, who had a blood test for lead levels in the blood. Apparently his test showed no noticable lead levels over the norm. I know this is hearsay but I trust my Doc's professionalism and have felt a bit easier about soldering after that. I am willing to revise my opinions however, just prefer facts to scare mongering. Just about anything is bad for you in large enough quantities. Especially most household metals. Do you drink acidic drinks from alluminium cans? Now that is scary. Dan Michaels wrote: {Quote hidden}> > NIgel Goodwin wrote: > ........ > >problems). As far as the UK authorities are concerned there is no danger > >from soldering using lead/tin solder - only the flux, hence the recent > >surge of new fluxes (which don't work well!). > > However, I have heard [ie, this is total hearsay] that incidental > lead contact in not too bad for "adults", but is quite bad for kids. > Just don't eat after handling it, without washing up. And you > certainly wouldn't want to setup your solder station in the > nursery. Hearsay. > > [and as Olin, I believe, said - remember the Roman empire did > invent great engineering systems to water their cities, but > unfortunately lined the conduits with lead - today, the empire > is gone, but you can still see the lead linings all over southern > europe]. > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > "[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's -- http://www.piclist.com hint: PICList Posts must start with ONE topic: "[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's

Roman Black wrote: ......... >I am willing to revise my opinions however, just prefer >facts to scare mongering. Just about anything is bad for you >in large enough quantities. Especially most household metals. >Do you drink acidic drinks from alluminium cans? Now that is >scary. > Did your doctor have anything to say about children and lead? JFTHOI, I did a search on "lead" on US Consumer Product Safety Commission site: http://www.cpsc.gov/ It returned the following - first 10 out of 297 [OTOH, america *is* certainly over-regulated]: 1. Codification of Guidance Policy on Lead in Consumer Products Abstract: Federal Register: December 22, 1998 (Volume 63, Number 245) [Rules and Regulations] [Page 70648-70649] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr22de98-8] - CONSUMER PRODUCT SAFETY COMMISSION 16 CFR Part 1500 Codification of Guidance Policy on Lead in Consumer Pr 2. Guidance for Lead (Pb) in Consumer Products Abstract: Washington, D.C. 20207. Guidance for Lead (Pb) in Consumer Products Summary: The U.S. Consumer Product Safety Commission issues this guidance to manufacturers, importers, distributors, and retailers to protect children from hazardous exposure to lead in consumer products.1 The Commission identifies 3. Crayons Recalled by Concord Enterprises Abstract: NEWS from CPSC. U.S. Consumer Product Safety Commission. CPSC And Concord Enterprises Announce Recall Of Certain Crayons Because Of Lead Poisoning Hazard. Office of Information and Public Affairs. Washington, DC 20207. FOR IMMEDIATE RELEASE. CONTACT: Ken Giles. March 22, 1994. 301) 504-0580, Ext. 1184. 4. CPSC Finds Lead Poisoning Hazard for Young Children in Imported Vinyl Miniblinds Abstract: NEWS from CPSC. U.S. Consumer Product Safety Commission. CPSC Finds Lead Poisoning Hazard for Young Children in Imported Vinyl Miniblinds. Office of Information and Public Affairs. Washington, DC 20207. FOR IMMEDIATE RELEASE. CONTACT:Kathleen Begala. June 25, 1996. 301) 504-0580 Ext. 1193. Release # 96-150. 5. Toy Manufacturers Agree to Rid Products of Lead Abstract: NEWS from CPSC. U.S. Consumer Product Safety Commission. Toy Manufacturers Agree to Rid Products of Lead. Office of Information and Public Affairs. Washington, DC 20207. FOR IMMEDIATE RELEASE. CONTACT: Nychelle Fleming. August 20, 1998. 301) 504-0580 Ext.1192. Release # 98-154. WASHINGTON, D.C. - The To 6. CPSC Lead-in-Paint Activities Reduce Consumer Exposure to Lead Abstract: CPSC Lead-in-Paint Activities Reduce Consumer Exposure to Lead. Extensive regulatory and educational efforts undertaken since the late 1970s, including CPSC's 1978 ban of most paints containing 0.06 percent or more lead, have dramatically reduced blood lead levels nationwide. Blood lead estimates from the most re 7. Questions and Answers: Lead Paint on Public Playground Equipment Abstract: Consumer Product Safety Commission. Questions and Answers: Lead Paint on Public Playground Equipment. Prepared by CPSC Staff October 1, 1996 Question: Why is the CPSC concerned about lead paint on playground equipment? Response: While deteriorating lead paint in homes poses the most significant lead r 8. CPSC Staff Recommendations for Identifying and Controlling Lead Paint on Public Playground Equipment Abstract: Consumer Product Safety Commission. CPSC Staff Recommendations for Identifying and Controlling Lead Paint on Public Playground Equipment. October 1996. I. Introduction The purpose of this document is to: 1) report U.S. Consumer Product Safety Commission (CPSC) staff findings that indicate a potential 9. CONSUMER PRODUCT SAFETY COMMISSION STAFF RECOMMENDATIONS FOR IDENTIFYING AND CONTROLLING LEAD PAINT ON PUBLIC PLAYGROUND EQUIPMENT Abstract: CONSUMER PRODUCT SAFETY COMMISSION STAFF RECOMMENDATIONS FOR IDENTIFYING AND CONTROLLING LEAD PAINT ON PUBLIC PLAYGROUND EQUIPMENT. EXECUTIVE SUMMARY. HEALTH RISKS. CPSC STAFF RECOMMENDATIONS. A. Lead Hazard Assessment. B. Controlling the Lead Hazard. CONSUMER PRODUCT SAFETY COMMISSION STAFF RECOMMEND 10. Lead Poisoning Hazard for Young Children on Public Playground Equipment Abstract: NEWS from CPSC. U.S. Consumer Product Safety Commission. CPSC Finds Lead Poisoning Hazard for Young Children on Public Playground Equipment. Office of Information and Public Affairs. Washington, DC 20207. FOR IMMEDIATE RELEASE. CONTACT: Kathleen Begala. October 1, 1996. 301) 504-0580 Ext. 1193. Release # 97-001. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: "[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's

At 09:40 AM 9/9/00 -0400, you wrote: >Hi, > >Has anyone looked into the effect of lead vapor emmited during soldering? >I heared lead sublimes and therefore will be around if there are any sources >around, i.e-computers, TVs, solder spool, etc. 1. There shouldn't be much lead vapor. You shouldn't be heating the solder much higher than the melting point. Lead (and tin, for that matter), don't sublime, so the vapor pressure should be fairly low at soldering temperatures (~ 400 C). 2. Lead is somewhat soluble, but still accumulates in the body to some extent. It interferes with neural development and injures the liver, where it accumulates. 3. Children are more at risk from lead poisoning than adults since they are still undergoing neural growth. They also are easily poisoned by eating paint chips with lead oxide. 4. Specific types of heavy metal compounds are much more dangerous than others. Soluble compounds get into the bloodstream quickly. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ralKILLspamlcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causas scire" ================================================================ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: "[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's

Dan Michaels wrote: > > Did your doctor have anything to say about children and lead? > No. But i remember a big fuss here to re-paint a lot of schools to get rid of the lead paint. Seemed a prtty important issue. I think lead paint is more dangerous as it flakes into tiny bits with a high surface area that oxidise a great deal. I think the contact with lead oxide is probably more dangerous than conact with lead itself. Most metals are not biologically available in their normal state, ie your body can't absorb them until they are a oxide or sulphate or something. Like magnesium or iron supplements, if you just ate iron dust or magnesium dust you wouldn't absorb any. By the same logic, contact or even eating lead probably wouldn't get into your blood unless it was lead sulphide of something. I think that's why lead paint is the worst type of lead for lead poisoning. But how does that affect soldering? I often spend a few hours a day with my face over a hot soldering iron, and who knows more about the flux? Isn't there a new lead-free solder? I have seen it in the EE catalogues but never tried any. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Hi, I agree lead and other heavy metals (Ni, Cd, Ba, even Hg) are dangerous in ionized state. According to this, I recall an interesting story: here in Hungary, the "paprika" (approx. red chili pepper) powder is VERY popular and used daily in cooking different dishes. This gives also nice red colour to them. 3 years ago or so, there was a bad harvest, so "paprika" was imported even smuggled. However, that sort was not so nice red so unresponsible people have added lead oxyde to colour them. Consequently, a lot of customers were intoxicated in a dangerous manner that hospital treatment was necessary. Ridiculous, the symptoms were not defined (different pains, anaemia, tiredness). Only a causal blood control of lead level has discovered the true reason. Regards, Imre On Sun, 10 Sep 2000, Roman Black wrote: {Quote hidden}> Dan Michaels wrote: > > > > > Did your doctor have anything to say about children and lead? > > > > No. But i remember a big fuss here to re-paint a lot of schools > to get rid of the lead paint. Seemed a prtty important issue. I > think lead paint is more dangerous as it flakes into tiny bits > with a high surface area that oxidise a great deal. I think the > contact with lead oxide is probably more dangerous than conact > with lead itself. Most metals are not biologically available in > their normal state, ie your body can't absorb them until they > are a oxide or sulphate or something. Like magnesium or iron > supplements, if you just ate iron dust or magnesium dust you > wouldn't absorb any. By the same logic, contact or even eating > lead probably wouldn't get into your blood unless it was lead > sulphide of something. I think that's why lead paint is the worst > type of lead for lead poisoning. > > But how does that affect soldering? I often spend a few hours > a day with my face over a hot soldering iron, and who knows > more about the flux? > > Isn't there a new lead-free solder? I have seen it in the EE > catalogues but never tried any. > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! use EraseMElistservspam_OUTTakeThisOuTmitvma.mit.edu?body=SET%20PICList%20DIGEST>