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Re: galvanized coatings and lead
At 02:17 PM 4/29/97 EST, you wrote:
>We are currently working with a company that cleans galvanized steel
>parts prior to powder coating. The cleaning line has alkaline
>clean, phosphoric acid, and polymer seal stages.
>The company has lead problems in their wastewater.
>Is anyone aware if the galvanized coating has lead as a minor
>constituent. I have been unable to find out.
>Thanks in advance
>NC Division of Pollution Prevention
>and Environmental Assistance
>PO Box 29569
>Raleigh, NC 27626-9569
>Tel: (919) 715-6526
>Fax: (919) 715-6794
Unless special care is taken to eliminate it, lead is copresent in
industrial quality zinc. Some galvanizers use(d) lead as a part of the
process, so lead would always be involved in their parts.
I had fun doing the first sets of TRI reports for a galvanizer as we tried
to figure out where all the lead came from and went!
Ralph E. Cooper, Ph.D.
3475 Norwood, Suite N
Shaker Heights, OH 44122-4975
Voice: 216-991-6837 (w/voice mail)