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Linking desorption kinetics to phenanthrene biodegradation in soil.

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Linking desorption kinetics to phenanthrene biodegradation in soil. / Rhodes, Angela; McAllister, Laura E.; Semple, Kirk T.
In: Environmental Pollution, Vol. 158, No. 5, 05.2010, p. 1348-1353.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Rhodes, A, McAllister, LE & Semple, KT 2010, 'Linking desorption kinetics to phenanthrene biodegradation in soil.', Environmental Pollution, vol. 158, no. 5, pp. 1348-1353. https://doi.org/10.1016/j.envpol.2010.01.008

APA

Vancouver

Rhodes A, McAllister LE, Semple KT. Linking desorption kinetics to phenanthrene biodegradation in soil. Environmental Pollution. 2010 May;158(5):1348-1353. doi: 10.1016/j.envpol.2010.01.008

Author

Rhodes, Angela ; McAllister, Laura E. ; Semple, Kirk T. / Linking desorption kinetics to phenanthrene biodegradation in soil. In: Environmental Pollution. 2010 ; Vol. 158, No. 5. pp. 1348-1353.

Bibtex

@article{753e7a85cdc348aa9d96c624a23feab3,
title = "Linking desorption kinetics to phenanthrene biodegradation in soil.",
abstract = "The desorption of polycyclic aromatic hydrocarbons (PAHs) often exhibits a biphasic profile similar to that observed for biodegradation whereby an initial rapid phase of degradation or desorption is followed by a phase of much slower transformation or release. Most investigations to-date have utilised a polymeric sorbent, such as Tenax, to characterise desorption, which is methodologically unsuitable for the analysis of soil. In this study, desorption kinetics of 14C-phenanthrene were measured by consecutive extraction using aqueous solutions of hydroxypropyl-β-cyclodextrin (HPCD). The data indicate that the fraction extracted after 24 h generally approximated the linearly sorbed, rapidly desorbing fraction (Frap), calculated using a three-compartment model. A good linear correlation between phenanthrene mineralised and Frap was observed (r2 = 0.89; gradient = 0.85; intercept = 8.20). Hence HPCD extraction (24 h) and first-order three-compartment modelling appear to provide an operationally straightforward tool for estimating mass-transfer limited biodegradation in soil. Aqueous hydroxypropyl-β-cyclodextrin (HPCD) solutions can predict the rapidly desorbing and microbially degradable fractions of phenanthrene in soils.",
keywords = "PAHs, Bioaccessibility, Desorption kinetics, Two and three-compartment models, Rapidly desorbing fraction",
author = "Angela Rhodes and McAllister, {Laura E.} and Semple, {Kirk T.}",
year = "2010",
month = may,
doi = "10.1016/j.envpol.2010.01.008",
language = "English",
volume = "158",
pages = "1348--1353",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Ltd",
number = "5",

}

RIS

TY - JOUR

T1 - Linking desorption kinetics to phenanthrene biodegradation in soil.

AU - Rhodes, Angela

AU - McAllister, Laura E.

AU - Semple, Kirk T.

PY - 2010/5

Y1 - 2010/5

N2 - The desorption of polycyclic aromatic hydrocarbons (PAHs) often exhibits a biphasic profile similar to that observed for biodegradation whereby an initial rapid phase of degradation or desorption is followed by a phase of much slower transformation or release. Most investigations to-date have utilised a polymeric sorbent, such as Tenax, to characterise desorption, which is methodologically unsuitable for the analysis of soil. In this study, desorption kinetics of 14C-phenanthrene were measured by consecutive extraction using aqueous solutions of hydroxypropyl-β-cyclodextrin (HPCD). The data indicate that the fraction extracted after 24 h generally approximated the linearly sorbed, rapidly desorbing fraction (Frap), calculated using a three-compartment model. A good linear correlation between phenanthrene mineralised and Frap was observed (r2 = 0.89; gradient = 0.85; intercept = 8.20). Hence HPCD extraction (24 h) and first-order three-compartment modelling appear to provide an operationally straightforward tool for estimating mass-transfer limited biodegradation in soil. Aqueous hydroxypropyl-β-cyclodextrin (HPCD) solutions can predict the rapidly desorbing and microbially degradable fractions of phenanthrene in soils.

AB - The desorption of polycyclic aromatic hydrocarbons (PAHs) often exhibits a biphasic profile similar to that observed for biodegradation whereby an initial rapid phase of degradation or desorption is followed by a phase of much slower transformation or release. Most investigations to-date have utilised a polymeric sorbent, such as Tenax, to characterise desorption, which is methodologically unsuitable for the analysis of soil. In this study, desorption kinetics of 14C-phenanthrene were measured by consecutive extraction using aqueous solutions of hydroxypropyl-β-cyclodextrin (HPCD). The data indicate that the fraction extracted after 24 h generally approximated the linearly sorbed, rapidly desorbing fraction (Frap), calculated using a three-compartment model. A good linear correlation between phenanthrene mineralised and Frap was observed (r2 = 0.89; gradient = 0.85; intercept = 8.20). Hence HPCD extraction (24 h) and first-order three-compartment modelling appear to provide an operationally straightforward tool for estimating mass-transfer limited biodegradation in soil. Aqueous hydroxypropyl-β-cyclodextrin (HPCD) solutions can predict the rapidly desorbing and microbially degradable fractions of phenanthrene in soils.

KW - PAHs

KW - Bioaccessibility

KW - Desorption kinetics

KW - Two and three-compartment models

KW - Rapidly desorbing fraction

U2 - 10.1016/j.envpol.2010.01.008

DO - 10.1016/j.envpol.2010.01.008

M3 - Journal article

VL - 158

SP - 1348

EP - 1353

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

IS - 5

ER -