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Improvements in pollutant monitoring: Optimizing silicone for co-deployment with polyethylene passive sampling devices

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https://ir.library.oregonstate.edu/concern/articles/m900nw20c

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  • Sequestering semi-polar compounds can be difficult with low-density polyethylene (LDPE), but those pollutants may be more efficiently absorbed using silicone. In this work, optimized methods for cleaning, infusing reference standards, and polymer extraction are reported along with field comparisons of several silicone materials for polycyclic aromatic hydrocarbons (PAHs) and pesticides. In a final field demonstration, the most optimal silicone material is coupled with LDPE in a large-scale study to examine PAHs in addition to oxygenated-PAHs (OPAHs) at a Superfund site. OPAHs exemplify a sensitive range of chemical properties to compare polymers (log K[subscript ow] 0.2–5.3), and transformation products of commonly studied parent PAHs. On average, while polymer concentrations differed nearly 7-fold, water-calculated values were more similar (about 3.5-fold or less) for both PAHs (17) and OPAHs (7). Individual water concentrations of OPAHs differed dramatically between silicone and LDPE, highlighting the advantages of choosing appropriate polymers and optimized methods for pollutant monitoring.
  • This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Elsevier and can be found at: http://www.journals.elsevier.com/environmental-pollution/
  • Keywords: OPAHs, Silicone, Oxygenated-PAHs, Passive sampling, Polyethylene, PAHs, Pesticides
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  • O'Connell, S. G., McCartney, M. A., Paulik, L. B., Allan, S. E., Tidwell, L. G., Wilson, G., & Anderson, K. A. (2014). Improvements in pollutant monitoring: Optimizing silicone for co-deployment with polyethylene passive sampling devices. Environmental Pollution, 193, 71-78. doi:10.1016/j.envpol.2014.06.019
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  • 193
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  • This project was supported in part by award number P42 ES016465 and the associated Analytical Chemistry Facility Core, P30 ES000210 and R21 ES020120 from the National Institute of Environmental Health Sciences and the OSU Food Safety and Environmental Stewardship Program. Steven O’Connell was supported in part by NIEHS Training Grant Fellowship T32ES007060-32 from the National Institutes of Health.
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