Peer-reviewed articles 17,970 +


Title: POLLUTION ASSESSMENT OF THE RIVERS FLOWING THROUGH BULGARIAN CITIES. A COMPARATIVE STUDY
POLLUTION ASSESSMENT OF THE RIVERS FLOWING THROUGH BULGARIAN CITIES. A COMPARATIVE STUDY

PlumX Article Metrics by Elsevier
Antonina Kovacheva; Diana Rabadjieva; Radost Ilieva; Rumiana Gergulova
10.5593/sgem2024/5.1/s20.26
10.5593/sgem2024/5.1
1314-2704
978-619-7603-72-9
English
24
5.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Ecology and Environmental Protection
This research compares the water quality in four river bodies passing through different cities in Bulgaria. An eco-chemical approach was applied including physicochemical and analytical measurements, as well as calculation of different pollution indices and the distribution of the element species as an indicator of their bioavailability. The results from analytical measurements and calculated pollution indices show that all the studied water bodies were polluted regarding P-PO43?, N-NH4+, Mn, and Pb. The highest values were measured in the Struma River, which is the result of both natural origin, due to the presence of coal mines, and the unsustainable management of mining and metallurgy activities in the past. The second most polluted is the Iskar River near Sofia city, mainly a consequence of the increased population in recent years. Thermodynamically calculated species of trace metals show that free Mn2+ ions dominate in all rivers being highest in Struma river. They are dangerous for aquatic fauna as free metal ions easily interact with ligands of organic compounds found in the bloodstream and/or within organs. Free ions are also calculated for Zn, but it is less dangerous because its content is significantly less. It was found only at single stations in the Maritsa and Danube rivers. Cu and Pb are potentially the riskiest elements for plants as their dominant organometallic species are easily accumulated by them. Regarding Al, its dominant hydroxy specie
[1] Wang Z., Hua P., Zhang J., Krebs P., Bayesian-Based Approaches to Exploring the Long-Term Alteration in Trace Metals of Surface Water and Its Driving Forces, Environ. Sci. Technol., 57, pp 1658–1669, 2023.
[2] Pitta E., Zeri C., Tzortziou M., Dimitriou E., Paraskevopoulou V., Dassenakis E., Scoullos M., Anagnostou E., Dissolved organic matter cycling in eastern Mediterranean rivers experiencing multiple pressures. The case of the trans-boundary Evros River, Mediterr. Mar. Sci., 15пп. 398-415, 2014.
[3] Zhang, Z., Tao F., Du J., Shi P., Yu D., Meng Y., Surface water quality and its control in a river with intensive human impacts--a case study of the Xiangjiang River, China, J. Environ. Manag., 91, pp. 2483-2490, 2010.
[4] Amin S., Muhammad S., Fatima H., Evaluation and risks assessment of potentially toxic elements in water and sediment of the Dor River and its tributaries, Northern Pakistan, Environ. Technol. Innov., 21, art. No 101333, (2021).
[5]. National report on the state and protection of the environment in the Republic of Bulgaria, 2023 (in Bulgarian). Available at https://eea.government.bg/bg/soer/2023/soer-bg-2023.pdf
[6] Gartsiyanova K., Varbanov M., Kitev A., Genchev S., Water quality analysis of the rivers Topolnitsa and Luda Yana, Bulgaria using different indices, J. Phys. Conf. Ser., 1960, art. No 012018, 2021.
[7] Radeva K., Seymenov K., Surface Water Pollution with Nutrient Components, Trace Metals and Metalloids in Agricultural and Mining-affected River Catchments (A Case Study for Three Tributaries of the Maritsa River, Southern Bulgaria), Geogr. Pannonica, 25, pp. 214–225, 2021.
[8] Yordanova, V., Todorova, Y., Belouhova, M., Kenderov, L., Lyubomirova, V., Topalova, Y., Environmental impact assessment of discharge of treated wastewater effluent in Upper Iskar sub-catchment, BioRisk, 17, pp. 59–71, 2022.
[9] Kovacheva, A., Vladov, I., Gabrashanska, M., Rabadjieva, D., Tepavitcharova, S., Nanev, V., Dassenakis, M., Karavoltsos, S., Dynamics of trace metals in the system water – soil – plant – wild rats – tapeworms (Hymenolepis diminuta) in Maglizh area, Bulgaria, J. Trace Elem. Med. Biol., 58, art. No126440, 2020
[10] Rabadjieva, D., Tepavitcharova, S., Kovacheva, A., Gergulova, R., Ilieva, R., Vladov, I., Nanev, V., Gabrashanska, M., Karavoltsos, S., Trace metals accumulation in the eco-system water – soil – vegetation (Agropyron cristatum) – common voles (Microtus arvalis) – parasites (Hymenolepis diminuta) in Radnevo region, Bulgaria, J. Trace Elem. Med. Biol., 66, art. No. 126750, 2021.
[11] Yan, C.A., Zhang, W., Zhang, Z., Liu, Y., Deng, C., Nie, N., Assessment of water quality and identification of polluted risky regions based on field observations&GIS in the Honghe River Watershed, China, PLoS One 10, 3, art. No e0119130, 2015.
[12] Gustafsson, J.P., Modeling the acid–base properties and metal complexation of humic substances with the Stockholm humic model, J. Colloid. Interface. Sci. 244, pp.102–112, 2001.
[13] Grenthe, I., Puigdomenech, I., Hummel, W., In: Grenthe, I., Puigdomenech I. (Eds) Modelling in aquatic chemistry, OECD Publications, 1997.
[14] ATSDR (Agency for Toxic Substances and Diseases Registry), Toxicological Profile for Manganese, US Department of Health and Human Services, Public Health Service, Atlanta USA, 2012. https://www.atsdr.cdc.gov/toxprofiles/tp151.pdf
[15] Nhantumbo, C., Larsson, R., Larson, M., Juizo, D., Persson, K.M., A Simplified Model to Estimate the Concentration of Inorganic Ions and Heavy Metals in Rivers, Water, 8(10), pp.453. 2016. https://doi.org/10.3390/w8100453
This work has been carried out in the framework of the National Science Program "Environmental Protection and Reduction of Risks of Adverse Events and Natural Disasters", approved by the Resolution of the Council of Ministers № 577/17.08.2018 and supported by the Ministry of Education and Science (MES) of Bulgaria (Agreement № Д01-27/06.02.2024).
conference
https://doi.org/10.5593/sgem2024/5.1/s20.26
Download PDF
Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 1 - 7 July, 2024
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
189-196
1 - 7 July, 2024
website
9974
ulgarian Rivers, Pollution indices, Thermodynamic modeling, Chemical species

25th SGEM International Conference on Earth & Planetary Sciences


International GeoConference SGEM2025
27 June - 6 July, 2025 / Albena, Bulgaria

Read More		   

SGEM Vienna GREEN "Green Science for Green Life"


Extended Scientific Sessions SGEM Vienna GREEN
3 -6 December, 2025 / Vienna, Austria

Read More
   

A scientific platform for Art-Inspired Scientists!


The Magical World Where Science meets Art
Vienna, Austria

Read More