J 2020

Application of equilibrium passive sampling to profile pore water and accessible concentrations of hydrophobic organic contaminants in Danube sediments

MINAŘÍKOVÁ, Michaela; Foppe SMEDES; Tatsiana RUSINA and Branislav VRANA

Basic information

Original name

Application of equilibrium passive sampling to profile pore water and accessible concentrations of hydrophobic organic contaminants in Danube sediments

Authors

MINAŘÍKOVÁ, Michaela (203 Czech Republic, belonging to the institution); Foppe SMEDES (528 Netherlands, belonging to the institution); Tatsiana RUSINA (112 Belarus, belonging to the institution) and Branislav VRANA (703 Slovakia, guarantor, belonging to the institution)

Edition

Environmental Pollution, Oxford, Elsevier, 2020, 0269-7491

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10511 Environmental sciences

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

is not subject to a state or trade secret

References:

Impact factor

Impact factor: 8.071

RIV identification code

RIV/00216224:14310/20:00118506

Organization unit

Faculty of Science

UT WoS

000631909700033

EID Scopus

2-s2.0-85091658630

Keywords in English

Bioavailability; Danube river; Equilibrium passive sampling; Hydrophobic organic compounds; Sediment pollution

Tags

Tags

International impact, Reviewed
Changed: 2/6/2025 15:23, Mgr. Michaela Hylsová, Ph.D.

Abstract

In the original language

Total concentrations of hydrophobic organic contaminants (HOCs) in sediment present a poor quality assessment parameter for aquatic organism exposure and environmental risk because they do not reflect contaminant bioavailability. The bioavailability issue of HOCs in sediments can be addressed by application of multi-ratio equilibrium passive sampling (EPS). In this study, riverbed sediment samples were collected during the Joint Danube Survey at 9 locations along the Danube River in 2013. Samples were exsitu equilibrated with silicone passive samplers. Desorption isotherms were constructed, yielding two endpoints: pore water (C-W:0) and accessible (C-AS:0) concentration of polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polycyclic aromatic hydrocarbons (PAHs) and polybrominated diphenyl ethers in sediment. C-W:0 concentrations of DDT and its breakdown products exhibited elevated levels in the low Danube, with the maximum in the river delta. Other investigated HOCs did not show any clear spatial trends along the river, and only a moderate C-W:0 variability. C-AS:0 in sediment ranged from 10 to 90% of the total concentration in sediment. C-W:0 was compared with freely dissolved concentration in the overlaying surface water, measured likewise by passive sampling. The comparison indicated potential compound release from sediment to the water phase for PAHs with less than four aromatic rings, and for remaining HOCs either equilibrium between sediment and water, or potential compound deposition in sediment. Sorption partition coefficients of HOC to organic carbon correlated well with octanol-water partition coefficients (KOW), showing stronger sorption of PAHs to sediment than that of PCBs and OCPs having equal logKOW. Comparison of C-W:0 values with European environmental quality standards indicated potential exceedance for hexachlorobenzene, fluoranthene and benzo[a] pyrene at several sites. The study demonstrates the utility of passive sampling as an innovative approach for risk-oriented monitoring of HOCs in river catchments. (c) 2020 Elsevier Ltd. All rights reserved.

Links

EF16_013/0001761, research and development project
Name: RECETOX RI
EF17_043/0009632, research and development project
Name: CETOCOEN Excellence
603437, interní kód MU
Name: SOLUTIONS - Solutions for present and future emerging pollutants in land and water resources management (Acronym: SOLUTIONS)
Investor: European Union, Cooperation
90121, large research infrastructures
Name: RECETOX RI