J 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.

Basic information

Original name

Estimation of p,p'-DDT degradation in soil by modeling and constraining hydrological and biogeochemical controls

Authors

SÁŇKA, Ondřej (203 Czech Republic, belonging to the institution), Jiří KALINA (203 Czech Republic, belonging to the institution), Yan LIN (578 Norway), Jan DEUTSCHER (203 Czech Republic), Martyn FUTTER (752 Sweden), Dan BUTTERFIELD (578 Norway), Lisa Emily MELYMUK (124 Canada, belonging to the institution), Karel BRABEC (203 Czech Republic, belonging to the institution) and Luca NIZZETTO (380 Italy, guarantor, belonging to the institution)

Edition

Environmental Pollution, OXFORD, OXON, ENGLAND, ELSEVIER SCI LTD, 2018, 0269-7491

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10511 Environmental sciences

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 5.714

RIV identification code

RIV/00216224:14310/18:00105754

Organization unit

Faculty of Science

UT WoS

000434744800016

Keywords in English

DDT; Environmental fate; Hydrobiogeochemical-multimedia fate model; INCA-Contaminants; Half-life in soil

Tags

International impact, Reviewed
Změněno: 20/1/2019 21:09, Mgr. Michaela Hylsová, Ph.D.

Abstract

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.

Links

CZ.02.1.01/0.0/0.0/16_013/0001761, interní kód MU
Name: RECETOX RI - OP VVV (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR, Priority axis 1: Strengthening capacities for high-quality research
EF15_003/0000469, research and development project
Name: Cetocoen Plus
LM2015051, research and development project
Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR
3SGA5978, interní kód MU
Name: Anthropogenic and Natural Drivers of Releases and Occurrence of Mixtures of Endocrine Disruptors in the Environment (Acronym: ANDROMEDE)
Investor: South-Moravian Region, Incoming grants