2018
Estimation of p,p'-DDT degradation in soil by modeling and constraining hydrological and biogeochemical controls
SÁŇKA, Ondřej; Jiří KALINA; Yan LIN; Jan DEUTSCHER; Martyn FUTTER et. al.Základní údaje
Originální název
Estimation of p,p'-DDT degradation in soil by modeling and constraining hydrological and biogeochemical controls
Autoři
SÁŇKA, Ondřej (203 Česká republika, domácí); Jiří KALINA (203 Česká republika, domácí); Yan LIN (578 Norsko); Jan DEUTSCHER (203 Česká republika); Martyn FUTTER (752 Švédsko); Dan BUTTERFIELD (578 Norsko); Lisa Emily MELYMUK (124 Kanada, domácí); Karel BRABEC (203 Česká republika, domácí) a Luca NIZZETTO (380 Itálie, garant, domácí)
Vydání
Environmental Pollution, OXFORD, OXON, ENGLAND, ELSEVIER SCI LTD, 2018, 0269-7491
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.714
Kód RIV
RIV/00216224:14310/18:00105754
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000434744800016
EID Scopus
2-s2.0-85045196853
Klíčová slova anglicky
DDT; Environmental fate; Hydrobiogeochemical-multimedia fate model; INCA-Contaminants; Half-life in soil
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 20. 1. 2019 21:09, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
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.
Návaznosti
CZ.02.1.01/0.0/0.0/16_013/0001761, interní kód MU |
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EF15_003/0000469, projekt VaV |
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LM2015051, projekt VaV |
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3SGA5978, interní kód MU |
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