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@article{1672097,
author = {Svobodová, Markéta and Hofman, Jakub and Bielská, Lucie and Šmídová, Klára},
article_location = {San Diego},
article_number = {April 2020},
doi = {http://dx.doi.org/10.1016/j.ecoenv.2020.110317},
keywords = {HOCs; BAFs; Aging; Bioaccumulation; Laboratory-contaminated soils},
language = {eng},
issn = {0147-6513},
journal = {Ecotoxicology and Environmental Safety},
note = {CZ.02.1.01/0.0/0.0/18_046/0015975 neuplatňovat.},
title = {Uptake kinetics of four hydrophobic organic pollutants in the earthworm Eisenia andrei in aged laboratory-contaminated natural soils},
url = {https://www.sciencedirect.com/science/article/pii/S0147651320301561?via%3Dihub},
volume = {192},
year = {2020}
}
TY - JOUR
ID - 1672097
AU - Svobodová, Markéta - Hofman, Jakub - Bielská, Lucie - Šmídová, Klára
PY - 2020
TI - Uptake kinetics of four hydrophobic organic pollutants in the earthworm Eisenia andrei in aged laboratory-contaminated natural soils
JF - Ecotoxicology and Environmental Safety
VL - 192
IS - April 2020
SP - 1-10
EP - 1-10
PB - ACADEMIC PRESS INC ELSEVIER SCIENCE
SN - 01476513
N1 - CZ.02.1.01/0.0/0.0/18_046/0015975 neuplatňovat.
KW - HOCs
KW - BAFs
KW - Aging
KW - Bioaccumulation
KW - Laboratory-contaminated soils
UR - https://www.sciencedirect.com/science/article/pii/S0147651320301561?via%3Dihub
L2 - https://www.sciencedirect.com/science/article/pii/S0147651320301561?via%3Dihub
N2 - Laboratory studies of pollutant uptake kinetics commonly start shortly after experimental soil contamination when it is not clear if the processes between soil and chemicals are equilibrated and stabilized. For instance, when the concentration in soil quickly decreases due to initial biodegradation, bioaccumulation may show a peak-shape accumulation curve instead of conventional first order kinetics with a plateau at the end. The results of such experiments with soil freshly contaminated in the laboratory are then hardly comparable to bioaccumulation observed in soils from historically contaminated sites. Therefore, our study focused on the uptake kinetics of four hydrophobic organic compounds (pyrene, lindane, p,p'-DDT and PCB 153) in two laboratory-contaminated natural soils with different soil properties (e.g. total organic carbon content of 1.6 and 9.3%) aged for 203 days to mimic long-term contamination. For pyrene, the results surprisingly showed peak-shape accumulation curves despite long aging. It seems compound biodegradation might be significant in aged soils when the conditions change (e.g. by distribution to the experimental vessels) and this should be also considered when testing historically contaminated soils. For lindane, longer aging seems to guarantee stability of the soil-compound-earthworm system and the steady state was reached after 5 days of exposure. Furthermore, although concentrations of p,p'-DDT and PCB 153 in earthworms after 11-15-day exposure did not statistically differ, which is a commonly-used indicator that a steady state was reached, they continuously increased until the end of the exposure. Therefore, despite the aging, longer exposure was probably needed to reach the true equilibrium between concentrations in earthworms and soil. In summary, aging does not warranty the conventional first order kinetic curve with the equilibrium at the end of the exposure but may have diverse effects for compounds with different environmental properties and should be taken into account in the bioaccumulation factor calculation and the risk assessment.
ER -
SVOBODOVÁ, Markéta, Jakub HOFMAN, Lucie BIELSKÁ a Klára ŠMÍDOVÁ. Uptake kinetics of four hydrophobic organic pollutants in the earthworm Eisenia andrei in aged laboratory-contaminated natural soils. \textit{Ecotoxicology and Environmental Safety}. San Diego: ACADEMIC PRESS INC ELSEVIER SCIENCE, roč.~192, April 2020, s.~1-10. ISSN~0147-6513. doi:10.1016/j.ecoenv.2020.110317. 2020.
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