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612-822-4611
Hexavalent Chromium Dissociation From Overspray Particles Into Fluid for Three Aircraft Primers

Hexavalent Chromium Dissociation From Overspray Particles Into Fluid for Three Aircraft Primers

Paperback

Technology & EngineeringChemistryGeneral Education

ISBN10: 1249833256
ISBN13: 9781249833253
Publisher: Biblioscholar
Published: Oct 17 2012
Pages: 128
Weight: 0.42
Height: 0.27 Width: 6.14 Depth: 9.21
Language: English

The Department of Defense and industry use chromate-containing primer paints extensively to inhibit corrosion on metal assets. Chromate, a primer pigment, provides excellent corrosion inhibition, but contains hexavalent chromium (Cr6+), a human carcinogen. There is no reliable epidemiological evidence of increased lung cancer incidence among painters potentially exposed to primer overspray particles. Using ioaerosol impingers, overspray particles from three different primers (solvent-borne epoxy, water-borne epoxy, and solvent-borne polyurethane) were collected into water to test the hypothesis that the paint matrix influences Cr6+ release into water. This collection method is intended to simulate Cr6+ release from paint particles into lung fluid. Collected particles were allowed to reside in the water for 1 and 24 hours after which the particles were separated from the water by centrifugation.

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