Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period

Radu, Violeta-Monica; Ionescu, Petra; Diacu, Elena; Deak, Gyorgy; Ivanov, Alexandru Anton

Violeta-Monica Radu, Petra Ionescu, Elena Diacu, Gyorgy Deak, Alexandru Anton Ivanov

Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period

Abstract:

The growing concern for most European rivers is due to pollution with potentially toxic elements (PTEs) and is of course a priority challenge for the Danube, a river that interconnects fresh water with the marine environment. The accumulation of PTEs from the Lower Danube River sediments and the potential negative effects of these chemicals on the water quality during and after the hydro-construction works carried out in the area to improve the navigation conditions have been studied in the present work. For seven years period (2011-2017), sampling campaigns from 10 monitoring sites were carried out. Sediment samples were taken from the Lower Danube River (km 375 - km 175) from the left and right banks, monthly during the construction period (2011 - 2015) and quarterly in the post-construction period (2015 - 2017). A total approximately of 1200 samples were analyzed and Cd, Cr, Cu, Pb, Zn and Ni content was determined to obtain the assessment of sediments that can influence water quality. Multivariate statistical analysis was applied to the complex data set obtained, the degree of accumulation and the distribution of these metals on the studied section was calculated. Also, the quality indicators of sediments were evaluated according to the legislation in force. The results showed that all concentrations of the monitored PTEs have recorded values over the normal values from the current legislation. On the whole, Zn has the highest concentration, while Cd has the smallest one. The order of the absolute average concentrations values found in this study is Zn ] Cu ] Cr ] Ni ] Pb ] Cd. For the Zn and Cu elements, slightly higher values were recorded compared to other heavy metals (Pb and Cd), which means that historically contaminated deposits in sediments can be remobilized and transported to the upper layers of the sediment or even be diffused in water. Generally, due to different sediment types and input levels, there is a variable contamination throughout the Danube aquatic ecosystem. The statistical analysis applied to analytic data highlighted the action of anthropogenic sources on the Danube aquatic ecosystem, showing the interdependencies between monitored indicators and seasonal influence.

Keywords:
Potentially toxic elements (PTEs); sediments; statistical analysis; Danube River

Issue: 2020, Volume 71, Issue 3

Pages: 126-135

Publication date: 2020/4/3

https://doi.org/10.37358/RC.20.3.7980

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
RADU, V., IONESCU, P., DIACU, E., DEAK, G., IVANOV, A.A., Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period, Rev. Chim., 71(3), 2020, 126-135.

Vancouver
Radu V, Ionescu P, Diacu E, Deak G, Ivanov AA. Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period. Rev. Chim.[internet]. 2020 Mar;71(3):126-135. Available from: https://doi.org/10.37358/RC.20.3.7980

APA 6th edition
Radu, V., Ionescu, P., Diacu, E., Deak, G. & Ivanov, A.A. (2020). Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period. Revista de Chimie, 71(3), 126-135. https://doi.org/10.37358/RC.20.3.7980

Harvard
Radu, V., Ionescu, P., Diacu, E., Deak, G., Ivanov, A.A. (2020). 'Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period', Revista de Chimie, 71(3), pp. 126-135. https://doi.org/10.37358/RC.20.3.7980

IEEE
V. Radu, P. Ionescu, E. Diacu, G. Deak, A.A. Ivanov, "Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period". Revista de Chimie, vol. 71, no. 3, pp. 126-135, 2020. [online]. https://doi.org/10.37358/RC.20.3.7980

Text
Violeta-Monica Radu, Petra Ionescu, Elena Diacu, Gyorgy Deak, Alexandru Anton Ivanov,
Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period,
Revista de Chimie,
Volume 71, Issue 3,
2020,
Pages 126-135,
ISSN 2668-8212,
https://doi.org/10.37358/RC.20.3.7980.
(https://revistadechimie.ro/Articles.asp?ID=7980)
Keywords: Potentially toxic elements (PTEs); sediments; statistical analysis; Danube River

RIS
TY - JOUR
T1 - Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period
A1 - Radu, Violeta-Monica
A2 - Ionescu, Petra
A3 - Diacu, Elena
A4 - Deak, Gyorgy
A5 - Ivanov, Alexandru Anton
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2020
VL - 71
IS - 3
SP - 126
EP - 135
UR - https://doi.org/10.37358/RC.20.3.7980
KW - Potentially toxic elements (PTEs)
KW - sediments
KW - statistical analysis
KW - Danube River
ER -

BibTex
@article{RevCh2020P126,
author = {Radu Violeta-Monica and Ionescu Petra and Diacu Elena and Deak Gyorgy and Ivanov Alexandru Anton},
title = {Assessing and Spatio-Temporal Variations of Potentially Toxic Elements in the Sediments from Lower Danube River in 2011-2017 Period},
journal = {Revista de Chimie},
volume = {71},
number = {3},
pages = {126-135},
year = {2020},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.20.3.7980},
url = {https://revistadechimie.ro/Articles.asp?ID=7980}
}

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