Skip to Main Content
Penetration of naphthalene, n-hexadecane, and 2,4-dinitrotoluene into southern yellow pine under conditions modeling spills and floodsAuthor(s): I.E. Popova; M.K. Beklemishev; C.R. Frihart; W.S. Seames; T.J. Sundstrom; E.I. Kozliak
Source: Forest products journal. Vol. 56, no. 6 (June 2006): pages 68-75.
Publication Series: Miscellaneous Publication
PDF: Download Publication (194 KB)
DescriptionThis paper investigates the penetration of three common contaminants into building grade southern yellow pine wood samples under the conditions experienced during chemical spills. Contaminants (n-hexadecane, naphthalene, and 2,4-dinitrotoluene) were applied in their 14C-labeled forms to 5-to 9-cm-long pieces of southern yellow pine at ambient conditions. The impact of the following parameters on diffusivity was investigated: contaminant volatility and solubility in water, penetration direction compared to wood grain structure, and water saturation of wood under conditions characteristic of catastrophic floods. Water saturation (having a dramatic effect on diffusion rates) was studied under three conditions: wood pieces with ambient water concentration, those “post-soaked” with water after contamination, and those pre-soaked with water before contamination. Contaminant diffusivities in the ambient samples increased with increased contaminant volatility. For more water-soluble compounds. naphthalene and 2,4-dinitrotoluene, the diffusion rate was greater in post-soaked samples with diffusivities approaching 10-9 m2/s, characteristic for their diffusion in bulk liquids. By contrast, n-hexadecane diffusion was hindered significantly in post-soaked samples. For all three contaminants, longitudinal and tangential penetration rates were similar, indicating that the rate-limiting step may be contaminant evaporation inside the wood tracheids or contaminant dissolution in water (diffusion being controlled by strong contaminant sorption in wood). Experiments with pre-soaked samples and those conducted under external capillary pressure showed different trends from non-pressurized post-soaked samples, indicating a possible switch in the rate-limiting steps for contaminant diffusion under these conditions.
- 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.
CitationPopova, I.E.; Beklemishev, M.K.; Frihart, C.R.; Seames, W.S.; Sundstrom, T.J.; Kozliak, E.I. 2006. Penetration of naphthalene, n-hexadecane, and 2,4-dinitrotoluene into southern yellow pine under conditions modeling spills and floods. Forest products journal. Vol. 56, no. 6 (June 2006): pages 68-75.
KeywordsSolubility, adsorption, absorption, water pollution, naphthalene, dinitrotoluenes, chemical spills, pollution, penetration, floods, tracheids, N-hexadecane, southern yellow pine
- A frontier shortleaf pine stand in the old-growth Cross Timbers of Oklahoma
- Moisture meter calibrations for untreated and ACQ-treated southern yellow pine lumber and plywood
- Impregnation of bio-oil from small diameter pine into wood for moisture resistance
XML: View XML