Method for reducing lead leaching in fixtures

Details Method for reducing lead leaching in fixtures Method for reducing lead leaching in fixtures

1997-09-24

1999-05-18

Willis, Prince

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

75638, 75710, C22B3/06

Patent

active

059047836

ABSTRACT:
A method for treating a brass fixture having a fluid-contacting surface with lead dispersoids exposed thereon to reduce lead leaching into a fluid supply by contacting the brass fixture with a liquid metal solution selected from the group consisting of a liquid sodium solution, a liquid potassium solution and a liquid metal alloy solution to dissolve lead dispersoids from the fixture, wherein the metal alloy comprises a metal selected from the group consisting of sodium and potassium.

REFERENCES:
patent: 4879094 (1989-11-01), Rushton
patent: 5137685 (1992-08-01), McDivitt
patent: 5454876 (1995-10-01), Downey
patent: 5544859 (1996-08-01), Coltrinari et al.
patent: 5601658 (1997-02-01), Marinas et al.
Marinas et al., Control of Drinking-Water Lead-Contamination Contributed by Brass Plumbing Fixtures, Proc. 1993 Am. Waterworks Assoc. Ann. Conf., pp. 945-971. No Month.

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