Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Stan Lebow; R. Sam Williams; Patricia Lebow
    Date: 2003
    Source: Environmental science & technology. Vol. 37, no. 18 (2003): Pages 4077-4082.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (314 KB)

    Description

    The release of arsenic from wood pressure-treated with chromated copper arsenate (CCA) can be decreased by application of wood finishes, but little is known about the types of finishes that are best suited for this purpose. This study evaluated the effects of finish water repellent content and ultraviolet (UV) radiation on the release of arsenic, copper, and chromium from CCA-treated wood exposed to simulated rainfall. Deck boards treated with CCA were either left unfinished or dipped in a finish prepared with 1%, 3%, or 5% water repellent. All specimens were exposed to leaching from simulated rainfall, and a subset of specimens was also exposed to UV radiation. The rainfall was collected and analyzed for total elemental arsenic, copper, and chromium. The water repellent significantly decreased the amounts of these elements in the runoff, but for the short duration of this study there was no difference among the three water repellent concentrations. It is possible that water repellent content would have a greater effect over a longer exposure period. Exposure to UV radiation caused a significant increase in leaching from both finished and unfinished specimens. This effect may be a result of increased surface area during weathering as well as loss of fibers caused by UV-induced surface erosion.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Lebow, Stan; Williams, R. Sam; Lebow, Patricia 2003. Effect of simulated rainfall and weathering on release of preservative elements from CCA treated wood. Environmental science & technology. Vol. 37, no. 18 (2003): Pages 4077-4082.

    Keywords

    CCA, copper chrome arsenate, wood preservatives, rainfall, weathering

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page