TY - JOUR
T1 - Predicting the biodegradation of target hydrocarbons in the presence of mixed contaminants in soil
AU - Stroud, Jacqueline L.
AU - Paton, Graeme I.
AU - Semple, Kirk T.
PY - 2009/1
Y1 - 2009/1
N2 - The aim of this study was to investigate the prediction of 14C-phenanthrene and 14C-hexadecane biodegradation in the presence of other hydrocarbons in soil using β- and α-cyclodextrin (CD) solutions, respectively. Prediction of the biodegradation of 14C-phenanthrene using the β-CD extraction was robust under single, co-contaminant and multiple contaminant conditions (r2 = 0.92, slope of best fit line = 0.87, intercept = 7.24, n = 84). Prediction of 14C-hexadecane using the α-CD extraction was robust under single and co-contaminant conditions (r2 = 0.92, slope of best fit line = 0.97, intercept = 1.24, n = 60); however, the α-CD could not accurately predict 14C-hexadecane biodegradation in the presence of multiple contaminants. The presence of multiple contaminants enhanced 14C-hexadecane mineralisation, but did not enhance extractability. The results from this study provide further evidence for the application of HPCD extractions for the measurement of microbial accessibility in soil.
AB - The aim of this study was to investigate the prediction of 14C-phenanthrene and 14C-hexadecane biodegradation in the presence of other hydrocarbons in soil using β- and α-cyclodextrin (CD) solutions, respectively. Prediction of the biodegradation of 14C-phenanthrene using the β-CD extraction was robust under single, co-contaminant and multiple contaminant conditions (r2 = 0.92, slope of best fit line = 0.87, intercept = 7.24, n = 84). Prediction of 14C-hexadecane using the α-CD extraction was robust under single and co-contaminant conditions (r2 = 0.92, slope of best fit line = 0.97, intercept = 1.24, n = 60); however, the α-CD could not accurately predict 14C-hexadecane biodegradation in the presence of multiple contaminants. The presence of multiple contaminants enhanced 14C-hexadecane mineralisation, but did not enhance extractability. The results from this study provide further evidence for the application of HPCD extractions for the measurement of microbial accessibility in soil.
KW - Biodegradation
KW - Hexadecane
KW - HP-α-CD
KW - HP-β-CD
KW - Phenanthrene
UR - http://www.scopus.com/inward/record.url?scp=58049149441&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2008.09.071
DO - 10.1016/j.chemosphere.2008.09.071
M3 - Article
C2 - 19012945
AN - SCOPUS:58049149441
SN - 0045-6535
VL - 74
SP - 563
EP - 567
JO - Chemosphere
JF - Chemosphere
IS - 4
ER -