@article {354,
	title = {Differences in sediment organic matter composition and PAH weathering between non-vegetated and recently vegetated fuel oiled sediments},
	journal = {International Journal of Phytoremediation},
	volume = {10},
	year = {2008},
	note = {id: 2025; PT: J; UT: WOS:000258774100001},
	pages = {473-485},
	abstract = {We examined polycyclic aromatic hydrocarbon (PAH) attenuation in contaminated field sediments after only 2 years of plant growth. We collected sediments from vegetated and non-vegetated areas at the Indiana Harbor Canal (IHC), an industrialized area with historic petroleum contamination of soils and sediments. PAH concentrations, PAH weathering indices, and organic matter composition in sediments colonized by Phragmites, cattails, or willow trees were compared to the same indices for non-vegetated sediments. We hypothesized that bulk sediment and humin fractions with measurable increases in plant organic matter content would show measurable changes to PAH attenuation as indicated by more weathered PAH diagnostic ratios or reduced PAH concentrations. Carbon-normalized PAH concentrations were lower in vegetated bulk sediments but higher in vegetated humin fractions relative to non-vegetated sediment fractions. Total organic carbon content was not indicative of more weathered N(3)/P(2) ratios or reduced PAH concentrations in vegetated sediment fractions. More weathered N(3)/P(2) ratios were observed with increased modern carbon (plant carbon) content of vegetated sediment fractions. Phragmites sediments contained more modern carbon (plant carbon) and more weathered PAH ratios [C(3)-naphthalenes and C(2)-phenanthrenes (N(3)/P(2))] than willow, cattail, and non-vegetated sediments.},
	issn = {1522-6514},
	doi = {10.1080/15226510802114862},
	author = {Gregory, Samuel T., III and Nichols, Elizabeth Guthrie}
}
@article {502,
	title = {The impact of vegetation on sedimentary organic matter composition and PAH desorption},
	journal = {Environmental Pollution},
	volume = {156},
	year = {2008},
	note = {id: 2024; PT: J; UT: WOS:000261678700045},
	pages = {928-935},
	abstract = {Relationships between sedimentary organic matter (SOM) composition and PAH desorption behavior were determined for vegetated and non-vegetated refinery distillate waste sediments. Sediments were fractionated into size, density, and humin fractions and analyzed for their organic matter content. Bulk sediment and humin fractions differed more in organic matter composition than size/density fractions. Vegetated humin and bulk sediments contained more polar organic carbon, black carbon, and modern (plant) carbon than non-vegetated sediment fractions. Desorption kinetics of phenanthrene, pyrene, chrysene, and C(3)-phenanthrene/anthracenes from humin and bulk sediments were investigated using Tenax (R) beads and a two-compartment, first-order kinetic model. PAH desorption from distillate waste sediments appeared to be controlled by the slow clesorbing fractions of sediment; rate constants were similar to literature values for k(slow) and k(very) (slow). After several decades of plant colonization and growth (Phragmites australis), vegetated sediment fractions more extensively desorbed PAHs and had faster desorption kinetics than non-vegetated sediment fractions. (C) 2008 Elsevier Ltd. All rights reserved.},
	issn = {0269-7491},
	doi = {10.1016/j.envpol.2008.05.011},
	author = {Nichols, Elizabeth Guthrie and Gregory, Samuel T. and Musella, Jennifer S.}
}
