1. No, but you find the following of interest.
The use of sweat to monitor lead absorption through the skin.
Lilley SG, Florence TM, Stauber JL.
SourceCSIRO Division of Fuel Technology, NSW, Australia.
http://www.ncbi.nlm.nih.gov/pubmed/3238426
Abstract
It is usually assumed that lead can be absorbed through the skin only if it
is present as an organolead compound such as tetraethyllead or lead
naphthanate. It has been found, however, that finely-powdered lead metal or
lead nitrate solution placed on the skin results in rapid absorption of
lead, and transport of the metal around the body. The absorbed lead appears
in sweat and saliva, but not in blood or urine. The application of 6 mg of
lead as 0.5 M lead nitrate to the left arm resulted in an increase in lead
concentration in pilocarpine-induced iontophoresis sweat samples taken from
the right arm, from an initial value of 15-25 micrograms Pbl-1 to greater
than 300 micrograms Pbl-1 after 2 days. Saliva lead increased from 2.5 to 15
micrograms Pbl-1 in the same period. The rate of lead absorption through the
skin increases with increased sweating of the skin. Since no measurable
increase in blood lead has been found, the lead must be transported in the
plasma and rapidly concentrated into the extracellular fluid pool (sweat and
saliva), without significant uptake by the erythrocytes, and with a very low
transient concentration in the plasma. Workers occupationally exposed to
lead have extremely high levels of lead in sweat even though their lead in
blood is only moderately elevated. Lead absorbed through the skin may be
eliminated via sweat and other extracellular fluids, and hence not be as
great a health hazard as ingested lead, but this will need to be proved by
further studies.
2. No
3. They were gloves but I still hope they wash their hands before they eat!
Bev
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Thursday, January 12, 2012 11:03 AM
To: [log in to unmask]
Subject: [TN] Hand Wipes and Lead Residues
Good morning all,
I just had a chat with one of our ES&H engineers, a very pleasent young
lady, on the topic of hand wipes and lead residues. Was I aware of any
industry studies on the efficiency of hand wipes marketed at removing lead
residues, presumably from contact with cored wire solder? I was not aware
of any. I am always instantly suspicious of ANYTHING that marketers
touch. I am of the opinion that good old fashioned hand washing with soap
and water is as effective as anything, but there are areas here where we
are pretty sure our operators go straight from the bench to lunch without
that step.
So, I turn to my favorite source of information.
1. Are you aware of any industrial hygiene studies regarding
transferrence of lead to the hand, and/or the efficiency of "lead removal
wipes" in removing residues.
2. In your facilities, do you use these kinds of wipes?
3. If not, what measures do you normally use for operators cleaning hands
to remove potentially harmful material?
I will probably discuss this with our crackerjack metallurgist when he
returns from travel tomorrow, but thought I would ask in the mean time.
Doug Pauls
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