Assessing the release of copper from nanocopper-treated and conventional copper-treated lumber into marine waters I: Concentrations and rates.

ABSTRACT: Little is known about the release of metal engineered nanomaterials (ENMs) from consumer goods, including lumber treated with micronized copper. Micronized copper is a recent form of antifouling wood preservative containing nanosized copper particles for use in pressure-treated lumber. The present study investigated the concentrations released and the release rate of total copper over the course of 133 d under freshwater, estuarine, and marine salinity conditions (0, 1, 10, and 30‰) for several commercially available pressure-treated lumbers: micronized copper azole (MCA) at 0.96 and 2.4 kg/m³ , alkaline copper quaternary (ACQ) at 0.30 and 9.6 kg/m³ , and chromated copper arsenate (CCA) at 40 kg/m³ . Lumber was tested as blocks and as sawdust. Overall, copp

SUBMITTER: Parks AN 

PROVIDER: S-EPMC6040830 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature