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The impact of soil organic matter and soil sterilisation on the bioaccessibility of (14)C-azoxystrobin determined by desorption kinetics

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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The impact of soil organic matter and soil sterilisation on the bioaccessibility of (14)C-azoxystrobin determined by desorption kinetics. / Clegg, Helen; Riding, Matthew J.; Oliver, Robin et al.
In: Journal of Hazardous Materials, Vol. 278, 15.08.2014, p. 336-342.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Clegg, H, Riding, MJ, Oliver, R, Jones, KC & Semple, KT 2014, 'The impact of soil organic matter and soil sterilisation on the bioaccessibility of (14)C-azoxystrobin determined by desorption kinetics', Journal of Hazardous Materials, vol. 278, pp. 336-342. https://doi.org/10.1016/j.jhazmat.2014.06.029

APA

Clegg, H., Riding, M. J., Oliver, R., Jones, K. C., & Semple, K. T. (2014). The impact of soil organic matter and soil sterilisation on the bioaccessibility of (14)C-azoxystrobin determined by desorption kinetics. Journal of Hazardous Materials, 278, 336-342. https://doi.org/10.1016/j.jhazmat.2014.06.029

Vancouver

Clegg H, Riding MJ, Oliver R, Jones KC, Semple KT. The impact of soil organic matter and soil sterilisation on the bioaccessibility of (14)C-azoxystrobin determined by desorption kinetics. Journal of Hazardous Materials. 2014 Aug 15;278:336-342. doi: 10.1016/j.jhazmat.2014.06.029

Author

Clegg, Helen ; Riding, Matthew J. ; Oliver, Robin et al. / The impact of soil organic matter and soil sterilisation on the bioaccessibility of (14)C-azoxystrobin determined by desorption kinetics. In: Journal of Hazardous Materials. 2014 ; Vol. 278. pp. 336-342.

Bibtex

@article{4cc164a45c664260950785da856e2c48,
title = "The impact of soil organic matter and soil sterilisation on the bioaccessibility of (14)C-azoxystrobin determined by desorption kinetics",
abstract = "As soils represent a major sink for most pesticides, factors influencing pesticide degradation are essential in identifying their potential environmental risk. Desorption of (14)C-azoxystrobin was investigated over time in two soils under sterile and non-sterile conditions using exhaustive (solvent) and non-exhaustive (aqueous) methods. Desorption data were fitted to a two-compartment model, differentiating between fast and slow desorbing fractions. With increased ageing, rapid desorption (Frap) (bioaccessibility) decreased with corresponding increases in slowly desorbing fractions (Fslow). The rapid desorption rate constant (kfast) was not affected by ageing, sterility or extraction solvent. The non-exhaustive extractions had similar desorption profiles; whereas exhaustive extractions in aged soils had the highest Frap. In non-sterile soil, Frap was lower resulting in higher Fslow, while desorption rates remained unaffected. Organic matter (OM) reduces Frap; but not desorption rates. Microorganisms and OM enhanced ageing effects, reducing the fraction of fast desorbing chemicals and potentially the bioaccessibility of pesticides in soil.",
keywords = "Azoxystrobin, Soil , Organic matter , Desorption kinetics , Bioaccessibility",
author = "Helen Clegg and Riding, {Matthew J.} and Robin Oliver and Jones, {Kevin C.} and Semple, {Kirk T.}",
year = "2014",
month = aug,
day = "15",
doi = "10.1016/j.jhazmat.2014.06.029",
language = "English",
volume = "278",
pages = "336--342",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The impact of soil organic matter and soil sterilisation on the bioaccessibility of (14)C-azoxystrobin determined by desorption kinetics

AU - Clegg, Helen

AU - Riding, Matthew J.

AU - Oliver, Robin

AU - Jones, Kevin C.

AU - Semple, Kirk T.

PY - 2014/8/15

Y1 - 2014/8/15

N2 - As soils represent a major sink for most pesticides, factors influencing pesticide degradation are essential in identifying their potential environmental risk. Desorption of (14)C-azoxystrobin was investigated over time in two soils under sterile and non-sterile conditions using exhaustive (solvent) and non-exhaustive (aqueous) methods. Desorption data were fitted to a two-compartment model, differentiating between fast and slow desorbing fractions. With increased ageing, rapid desorption (Frap) (bioaccessibility) decreased with corresponding increases in slowly desorbing fractions (Fslow). The rapid desorption rate constant (kfast) was not affected by ageing, sterility or extraction solvent. The non-exhaustive extractions had similar desorption profiles; whereas exhaustive extractions in aged soils had the highest Frap. In non-sterile soil, Frap was lower resulting in higher Fslow, while desorption rates remained unaffected. Organic matter (OM) reduces Frap; but not desorption rates. Microorganisms and OM enhanced ageing effects, reducing the fraction of fast desorbing chemicals and potentially the bioaccessibility of pesticides in soil.

AB - As soils represent a major sink for most pesticides, factors influencing pesticide degradation are essential in identifying their potential environmental risk. Desorption of (14)C-azoxystrobin was investigated over time in two soils under sterile and non-sterile conditions using exhaustive (solvent) and non-exhaustive (aqueous) methods. Desorption data were fitted to a two-compartment model, differentiating between fast and slow desorbing fractions. With increased ageing, rapid desorption (Frap) (bioaccessibility) decreased with corresponding increases in slowly desorbing fractions (Fslow). The rapid desorption rate constant (kfast) was not affected by ageing, sterility or extraction solvent. The non-exhaustive extractions had similar desorption profiles; whereas exhaustive extractions in aged soils had the highest Frap. In non-sterile soil, Frap was lower resulting in higher Fslow, while desorption rates remained unaffected. Organic matter (OM) reduces Frap; but not desorption rates. Microorganisms and OM enhanced ageing effects, reducing the fraction of fast desorbing chemicals and potentially the bioaccessibility of pesticides in soil.

KW - Azoxystrobin

KW - Soil

KW - Organic matter

KW - Desorption kinetics

KW - Bioaccessibility

U2 - 10.1016/j.jhazmat.2014.06.029

DO - 10.1016/j.jhazmat.2014.06.029

M3 - Journal article

C2 - 24997252

VL - 278

SP - 336

EP - 342

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

ER -