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Cite Download Share Embed. Arp Nicholas A. Azzolina Gerard Cornelissen Steven B. Sediment and freely dissolved pore water concentrations of the U. The total EPA freely dissolved pore water concentration, C pw,EPA , expressed as toxic units TU is currently considered one of the most accurate measures to assess risk at such sites; however, it is very seldom measured. Correlations improve further by including the ratio of high to low molecular weight PAHs, as 2-ring PAHs exhibit the most variability in terms of their relative abundance. Incorporation of the presented C pw,EPA estimation techniques could substantially improve risk assessments and guidelines for sediments impacted by pyrogenic residues, especially when limited data are available, without requiring any extra data or measurement costs. Keyword s EPA parent PAHs pore water concentration sediment samples r 2 coal tar benthic amphipods Hyalella azteca partitioning behavior pore water concentrations Cpw aluminum smelters risk assessments 34 alkyl Leptocheirus plumulosus log pyrogenic sources gas plants Pyrene ContentSediment site 16 parent PAH data U. Export RefWorks.
Alpha Analytical has considerable experience with the analysis of hydrocarbons in general and PAHs in particular. We have supported some of the largest, most demanding and highest profile hydrocarbon investigations in the world. Alpha offers a unique combination of the highest quality analytical capabiliities, as well as the capacity to process the large numbers of samples these types of projects typically generate both efficiently and in accordance with challenging timeframes. Alkylated PAH Analysis.
Data and any associated metadata are available on request from the corresponding author Joy McGrath at moc. The data calculations are described to a level that can be replicated. Polycyclic aromatic hydrocarbons PAHs in sediments can pose harm to the benthic community. Sediment quality guidelines are derived using empirical or mechanistic approaches.