TY - JOUR
T1 - Influence of hydroxypropyl-β-cyclodextrin on the biodegradation of 14C-phenanthrene and 14C-hexadecane in soil
AU - Stroud, Jacqueline L.
AU - Tzima, Marina
AU - Paton, Graeme I.
AU - Semple, Kirk T.
PY - 2009/10
Y1 - 2009/10
N2 - Soil was spiked with [9- 14C]phenanthrene and [1- 14C]hexadecane at 50 mg kg -1 and aged for 1, 25, 50, 100 and 250 d. At each time point, the microcosms were amended with aqueous solutions of cyclodextrin (HP-β-CD) at a range of concentrations (0-40 mM). Mineralisation assays and aqueous HP-β-CD extractions were performed to assess the effect of the amendments on microbial degradation. The results showed that amendments had no significant impact on the microbial degradation of either of the 14C-contaminants. Further, HP-β-CD extractions were correlated with the mineralisation of the target chemicals in each of the soil conditions. It was found that the HP-β-CD extraction was able to predict mineralisation in soils which had not been amended with cyclodextrin; however, in the soils containing the HP-β-CD, there was no predictive relationship. Under the conditions of this study, the introduction of HP-β-CD into soils did not enhance the biodegradation of the organic contaminants.
AB - Soil was spiked with [9- 14C]phenanthrene and [1- 14C]hexadecane at 50 mg kg -1 and aged for 1, 25, 50, 100 and 250 d. At each time point, the microcosms were amended with aqueous solutions of cyclodextrin (HP-β-CD) at a range of concentrations (0-40 mM). Mineralisation assays and aqueous HP-β-CD extractions were performed to assess the effect of the amendments on microbial degradation. The results showed that amendments had no significant impact on the microbial degradation of either of the 14C-contaminants. Further, HP-β-CD extractions were correlated with the mineralisation of the target chemicals in each of the soil conditions. It was found that the HP-β-CD extraction was able to predict mineralisation in soils which had not been amended with cyclodextrin; however, in the soils containing the HP-β-CD, there was no predictive relationship. Under the conditions of this study, the introduction of HP-β-CD into soils did not enhance the biodegradation of the organic contaminants.
KW - Biodegradation
KW - Cyclodextrin
KW - Hexadecane
KW - HP-β-CD
KW - Phenanthrene
UR - http://www.scopus.com/inward/record.url?scp=67849126651&partnerID=8YFLogxK
U2 - 10.1016/j.envpol.2009.05.009
DO - 10.1016/j.envpol.2009.05.009
M3 - Article
C2 - 19501437
AN - SCOPUS:67849126651
SN - 0269-7491
VL - 157
SP - 2678
EP - 2683
JO - Environmental Pollution
JF - Environmental Pollution
IS - 10
ER -