Lability of polycyclic aromatic hydrocarbons in the rhizosphere

Cofield, Naressa; Banks, M. Katherine; Schwab, A. P.

doi:10.1016/j.chemosphere.2007.07.057

Cited by 48 publications

(20 citation statements)

References 28 publications

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“…[71] The decrease in the total content of individual PAHs was not enhanced in soil planted with tall fescue (Festuca arundinacea) or switchgrass (Panicum virgatum). However, in all treatments 100 % of the labile fraction was dissipated for all but five PAHs (four of which are five-membered rings and one of which is a six-membered ring), leading to a decrease in toxicity measured by bioassays (except microbial respiration).…”

Section: Bioavailability and The Problem Of Ageingmentioning

confidence: 99%

Phytoremediation of Organic Contaminants in Soil and Groundwater

2008

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Phytoremediation is an emerging technology for the clean-up of sites contaminated with hazardous chemicals. The term phytoremediation refers to a number of technologies that use photoautotrophic vascular plants for the remediation of sites contaminated with inorganic and organic contaminants. Phytoremediation of organic contaminants can be organized by considering 1) the green liver concept, which elucidates the metabolism of contaminants in planta versus that of contaminants ex planta (e.g. rhizosphere), 2) processes that lead to complete degradation (mineralization) of contaminants as opposed to those that only lead to partial degradation or transformation, and 3) active plant uptake versus passive processes (e.g. sorption). Understanding of these processes needs an interdisciplinary approach involving chemists, biologists, soil scientists, and environmentalists. This Review presents the basic concepts of phytoremediation of organic contaminants in soil and groundwater using selected contaminants as examples.

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Section: Bioavailability and The Problem Of Ageingmentioning

confidence: 99%

Phytoremediation of Organic Contaminants in Soil and Groundwater

2008

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“…Organic contaminants are carbon based and can be released as a result of a wide range of activities such as gas works (Cofi eld et al 2008 ;Luthy et al 1997 ), timber treatment (Mills et al 2006 ), and coal processing (Cooke and Dennis 1983 ). The types of substances released are also extremely variable and include trichloroethylene, strazene, 2, 4,6-trinitrotoluene (TNT), gasoline, polycyclic aromatic hydrocarbon (PAHs), methyl tert-butyl ether, and polychlorinatedphenols (Batty and Dolan 2013 ).…”

Section: Phytoremediation Of Organic Pollutants In Watermentioning

confidence: 99%

Phytoremediation of Contaminated Waters to Improve Water Quality

et al. 2015

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“…Roots have a high capacity not only to enhance the dissipation of soil organic pollutants by root exudates (e.g. enzymes, nutrients) (Criquet et al 2000;Joner et al 2002;Mingji et al 2009) but also by changing the physicochemical properties of soil and thus enhancing pollutant bioavailability (Parrish et al 2005;Cofield et al 2008). The PAH dissipation in soils depends on the soil characteristics, and especially clay for PHE (Chiapusio et al 2007).…”

Section: Introductionmentioning

confidence: 97%

Two biochemical forms of phenanthrene recovered in grassland plants (Lolium perenne L. and Trifolium pratense L.) grown in 3 spiked soils

et al. 2011

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Plant storage is a key component in the global cycling of persistent polycyclic aromatic hydrocarbons (PAHs) and constitutes a crucial step to understand environmental fate of such pollutants. This work aimed at quantifying biochemical forms of phenanthrene (PHE) stored in plants and determining the main parameter between the plant species and the soil characteristics involved in the PHE bioaccumulation. An experiment was conducted in a growth chamber to study the storage of PHE in ryegrass and clover in three distinct artificially contaminated soils (1,000 mu g g(-1) DW). A preliminary experiment was designed to develop an extraction method which distinguished easily extractable PHE (free-PHE) from less extractable PHE (bound-PHE). PHE was found to be mainly recovered in plant roots (around 90% of the total PHE recovered in plants) in its free form. PHE was transported upward from the roots into shoots. PHE recovered in shoots (around 1 mu g g(-1)) was divided into its free (60%) and bound (40%) forms except for one treatment. Observed differences of root PHE storage were clearly related with the PHE dissipation in soil and then with the plant species. This work outlined the importance of quantifying the bound and free PAHs in plants in further researches

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Lability of polycyclic aromatic hydrocarbons in the rhizosphere

Cited by 48 publications

References 28 publications

Phytoremediation of Organic Contaminants in Soil and Groundwater

Phytoremediation of Organic Contaminants in Soil and Groundwater

Phytoremediation of Contaminated Waters to Improve Water Quality

Two biochemical forms of phenanthrene recovered in grassland plants (Lolium perenne L. and Trifolium pratense L.) grown in 3 spiked soils

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