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@article{1488706,
author = {Sáňka, Ondřej and Kalina, Jiří and Lin, Yan and Deutscher, Jan and Futter, Martyn and Butterfield, Dan and Melymuk, Lisa Emily and Brabec, Karel and Nizzetto, Luca},
article_location = {OXFORD, OXON, ENGLAND},
article_number = {August},
doi = {http://dx.doi.org/10.1016/j.envpol.2018.04.022},
keywords = {DDT; Environmental fate; Hydrobiogeochemical-multimedia fate model; INCA-Contaminants; Half-life in soil},
language = {eng},
issn = {0269-7491},
journal = {Environmental Pollution},
title = {Estimation of p,p'-DDT degradation in soil by modeling and constraining hydrological and biogeochemical controls},
url = {https://www.sciencedirect.com/science/article/pii/S0269749117349151?via%3Dihub},
volume = {239},
year = {2018}
}
TY - JOUR
ID - 1488706
AU - Sáňka, Ondřej - Kalina, Jiří - Lin, Yan - Deutscher, Jan - Futter, Martyn - Butterfield, Dan - Melymuk, Lisa Emily - Brabec, Karel - Nizzetto, Luca
PY - 2018
TI - Estimation of p,p'-DDT degradation in soil by modeling and constraining hydrological and biogeochemical controls
JF - Environmental Pollution
VL - 239
IS - August
SP - 179-188
EP - 179-188
PB - ELSEVIER SCI LTD
SN - 02697491
KW - DDT
KW - Environmental fate
KW - Hydrobiogeochemical-multimedia fate model
KW - INCA-Contaminants
KW - Half-life in soil
UR - https://www.sciencedirect.com/science/article/pii/S0269749117349151?via%3Dihub
L2 - https://www.sciencedirect.com/science/article/pii/S0269749117349151?via%3Dihub
N2 - Despite not being used for decades in most countries, DDT remains ubiquitous in soils due to its persistence and intense past usage. Because of this it is still a pollutant of high global concern. Assessing long term dissipation of DDT from this reservoir is fundamental to understand future environmental and human exposure. Despite a large research effort, key properties controlling fate in soil (in particular, the degradation half-life (Toll)) are far from being fully quantified. This paper describes a case study in a large central European catchment where hundreds of measurements of p,p'-DDT concentrations in air, soil, river water and sediment are available for the last two decades. The goal was to deliver an integrated estimation of tau(soil) by constraining a state-of-the-art hydrobiogeochemical-multimedia fate model of the catchment against the full body of empirical data available for this area. The INCA-Contaminants model was used for this scope. Good predictive performance against an (external) dataset of water and sediment concentrations was achieved with partitioning properties taken from the literature and Toll estimates obtained from forcing the model against empirical historical data of p,p'-DDT in the catchment multicompartments. This approach allowed estimation of p,p'-DDT degradation in soil after taking adequate consideration of losses due to runoff and volatilization. Estimated tau(soil) ranged over 3000-3800 days. Degradation was the most important loss process, accounting on a yearly basis for more than 90% of the total dissipation. The total dissipation flux from the catchment soils was one order of magnitude higher than the total current atmospheric input estimated from atmospheric concentrations, suggesting that the bulk of p,p'-DDT currently being remobilized or lost is essentially that accumulated over two decades ago.
ER -
SÁŇKA, Ondřej, Jiří KALINA, Yan LIN, Jan DEUTSCHER, Martyn FUTTER, Dan BUTTERFIELD, Lisa Emily MELYMUK, Karel BRABEC and Luca NIZZETTO. Estimation of p,p'-DDT degradation in soil by modeling and constraining hydrological and biogeochemical controls. \textit{Environmental Pollution}. OXFORD, OXON, ENGLAND: ELSEVIER SCI LTD, 2018, vol.~239, August, p.~179-188. ISSN~0269-7491. Available from: https://dx.doi.org/10.1016/j.envpol.2018.04.022.
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