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Persistent organic pollutants (POPs) have been at the forefront of environmental contamination research even before their ban in 2001 at the Stockholm Convention. Their relation to different compartments of the environment (biotic and abiotic) has been thoroughly investigated. This article aims to identify whether the benthos could represent a reliable indicator of environmental contamination with POPs and to highlight its potential transfer role between abiotic and upper trophic compartments—benthos feeders. In this regard, we determined that the Ephemeroptera samples have higher concentrations (p< 0.05) of ΣPCB, ΣHCH, and ΣDDT than sediment samples while Trichoptera samples have higher concentrations (p< 0.05) only in the case of ΣPCB and ΣDDT. This, along with the fact that the frequency of detection for POPs is similar between the sample types (sediments, Trichoptera, and Ephemeroptera), makes the benthos samples valuable indicators of contamination with sediment samples working as complementary information about how recent the contamination is.
Angela Curtean-Bănăduc; Alexandru Burcea; Claudia-Maria Mihuţ; Doru Bănăduc. The Benthic Trophic Corner Stone Compartment in POPs Transfer from Abiotic Environment to Higher Trophic Levels—Trichoptera and Ephemeroptera Pre-Alert Indicator Role. Water 2021, 13, 1778 .
AMA StyleAngela Curtean-Bănăduc, Alexandru Burcea, Claudia-Maria Mihuţ, Doru Bănăduc. The Benthic Trophic Corner Stone Compartment in POPs Transfer from Abiotic Environment to Higher Trophic Levels—Trichoptera and Ephemeroptera Pre-Alert Indicator Role. Water. 2021; 13 (13):1778.
Chicago/Turabian StyleAngela Curtean-Bănăduc; Alexandru Burcea; Claudia-Maria Mihuţ; Doru Bănăduc. 2021. "The Benthic Trophic Corner Stone Compartment in POPs Transfer from Abiotic Environment to Higher Trophic Levels—Trichoptera and Ephemeroptera Pre-Alert Indicator Role." Water 13, no. 13: 1778.
Background: The Mureș River Basin is a long-term heavily polluted watershed, in a situation of climate changes with increasing water flow and related decreasing dilution capacity. Here, a mixture of emerging pollutants such as pharmaceuticals were targeted to reveal potential risks regarding the natural lotic ecosystems. Due to the continuous discharge into the environment, pharmaceuticals are gaining persistent organic pollutant characteristics and are considered emerging pollutants. Based on the hazard quotient, this research highlights the dangerous concentrations of carbamazepine, ibuprofen, furosemide, and enalapril in river water. Results: High levels of four pharmaceutical compounds (carbamazepine, ibuprofen, furosemide, and enalapril) and some of their derived metabolites (enalaprilat, carboxyibuprofen, 1-hydroxyibuprofen, and 2-hydroxyibuprofen) were reported in our study in the Mureș River Basin. Overall, pharmaceutical concentrations were found to be highest in the wastewater treatment plant (WWTP) effluent, median downstream of the WWTP, and lowest upstream of the WWTP, as was expected. For all pharmaceutical compounds tested, we recorded concentrations above the limit of quantification (LOQ) in at least one of the sites tested. Carbamazepine exhibited the highest mean values upstream, downstream, and at the WWTP. As expected, the highest concentrations for all the studied pharmaceutical compounds were detected in the WWTP effluent. All Hazard Quotient (HQ) values were below one (on a logarithmic scale in base 10), with the highest values in the WWTP and the lowest in the river upstream of the WWTP. The HQ intervals were in the same range for furosemide, carbamazepine, and ibuprofen at each of the three different sites: upstream WWTP effluent, and downstream. The interval for enalapril stands out as having the lowest HQ at all three sites. Conclusions: Based on these results, the large and complex hydrographical system Mureș River Basin was transformed from a grey area, with little information about pharmaceutical contamination, to a hotspot in terms of contamination with emerging pollutants. Pharmaceutical compound concentrations were found to be the highest in WWTP effluents. The WWTP effluent concentrations were among the highest in Europe, indicating that treatment plants are the primary source of water pollution with pharmaceuticals compounds. The detected levels were higher than the safety limit for carbamazepine and ibuprofen. The determined HQ values imply that the measured levels do pose a threat to the environment for the studied pharmaceuticals. Based on the obtained results, human communities can assess, monitor, predict, and adapt in time to these already-present regional challenges and risks for sustainable use of natural resources, including water and associated products and services.
Alexandru Burcea; Ioana Boeraş; Claudia-Maria Mihuţ; Doru Bănăduc; Claudiu Matei; Angela Curtean-Bănăduc. Adding the Mureş River Basin (Transylvania, Romania) to the List of Hotspots with High Contamination with Pharmaceuticals. Sustainability 2020, 12, 10197 .
AMA StyleAlexandru Burcea, Ioana Boeraş, Claudia-Maria Mihuţ, Doru Bănăduc, Claudiu Matei, Angela Curtean-Bănăduc. Adding the Mureş River Basin (Transylvania, Romania) to the List of Hotspots with High Contamination with Pharmaceuticals. Sustainability. 2020; 12 (23):10197.
Chicago/Turabian StyleAlexandru Burcea; Ioana Boeraş; Claudia-Maria Mihuţ; Doru Bănăduc; Claudiu Matei; Angela Curtean-Bănăduc. 2020. "Adding the Mureş River Basin (Transylvania, Romania) to the List of Hotspots with High Contamination with Pharmaceuticals." Sustainability 12, no. 23: 10197.
Maps with grey or even white spaces are still present in spite of the fact that persistent organic pollutants (POPs) are at the forefront of research in aquatic toxicology and environmental safety. This is also the case for the Mureș River basin. The intensive use of industrial substances such as polychlorinated biphenyls (PCBs) and pesticides such as organochlorine compounds (OCPs) has caused global contamination of the aquatic environment. In our study we have found very high concentrations of both PCBs (2110–169,000 ng/g lipid weight ΣPCB, 1950–166,000 ng/g lipid weight ΣPCB7) and OCPs (1130–7830 ng/g lipid weight ΣDDT, 47.6–2790 ng/g lipid weight ΣHCH, 5.53–35.6 ng/g lipid weight ΣChlordane, and 6.74–158 ng/g lipid weight HCB) in the gonad tissue of Barbus barbus (Linnaeus, 1758) males and females. Contrary to most studies where the weight, length, and lipid percentage are positively correlated with the concentration of POPs from different tissue types, we observed a downward trend for the lipid normalized concentrations of some pollutants in gonads while these indices were actually increasing. The decrease of lipid normalized POPs with the increase of CF and lipid percentage may be due to the fact that individuals are eliminating hard and soft roes every year during reproduction which could mean that some quantities of pollutants are also eliminated along with the hard and soft roes. The high POPs concentrations found in our study should be a needed wakeup call for environmentalists and a starting point in developing monitoring and management measures for these pollutants.
Angela Curtean-Bănăduc; Alexandru Burcea; Claudia-Maria Mihuţ; Vidar Berg; Jan Ludvig Lyche; Doru Bănăduc. Bioaccumulation of persistent organic pollutants in the gonads of Barbus barbus (Linnaeus, 1758). Ecotoxicology and Environmental Safety 2020, 201, 110852 .
AMA StyleAngela Curtean-Bănăduc, Alexandru Burcea, Claudia-Maria Mihuţ, Vidar Berg, Jan Ludvig Lyche, Doru Bănăduc. Bioaccumulation of persistent organic pollutants in the gonads of Barbus barbus (Linnaeus, 1758). Ecotoxicology and Environmental Safety. 2020; 201 ():110852.
Chicago/Turabian StyleAngela Curtean-Bănăduc; Alexandru Burcea; Claudia-Maria Mihuţ; Vidar Berg; Jan Ludvig Lyche; Doru Bănăduc. 2020. "Bioaccumulation of persistent organic pollutants in the gonads of Barbus barbus (Linnaeus, 1758)." Ecotoxicology and Environmental Safety 201, no. : 110852.