| Title | The last 50 years of organic contamination of a highly anthropized tributary of the Po River (Italy) |
| Abstract | We examined the temporal profiles of many organic micropollutants analysed in a sediment core sampled from a highly anthropized tributary of the Po River, the Lambro River. Analysed for extractable organic halogens (EOX), total petroleum hydrocarbons (C-CTPH), polycyclic aromatic hydrocarbons (PAHs), common legacy pollutants (DDTs, PCBs), halogenated flame retardants (PBDEs, DBDPE, TBBPA-bis, TCBPA, TBBPA, HBCDs), organotins (TBT, TPhT), antimicrobials (TCS, TCC), fragrances (AHTN, HHCB) and phthalates (DMP, DEP, DnBP, BBP, DEHP, DnOP), the dated sediment core revealed the historical record of 50 years of chemical contamination discharged into the Lambro and thereby the Po River. In this regard, the peak levels of PCBs and DDTs found in Lambro sediments were also identified in other sediment cores collected from the Po River prodelta in the Adriatic Sea, thus hundreds of kilometres downstream (Combi et al., 2020). The highest risk to aquatic organisms was associated with decades of high levels of C-C TPH, PBDEs, PCBs, PAHs, DDTs, EOX, TCC, AHTN and DEHP, which in different periods of the contamination history, showed exceedances of guideline/threshold values. C-C TPH and TCC, for example, were very high in the 1960s, whereas PCBs, DDTs, and PBDEs, peaked from the 1980s onward. The corresponding sums of PEC quotients ranged between 0.48 and 28.63, with a mean value (±SD) for the entire recording period of 10.62 ± 9.83. Environmental legislations and improved wastewater treatments were the main drivers of the recent downward trends observed for most of the chemicals investigated. Floods in turn resulted in macroscopic yet temporary improvements in the chemical quality of the tributary, conveying contaminated sediments into the Po River. |
| Source | Journal of environmental management 326 |
| Keywords | Ecological riskLambro RiverOrganic micropollutantsSediment transportSedimentary records |
| Journal | Journal of environmental management |
| Editor | Academic Press., New York, Regno Unito |
| Year | 2023 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.jenvman.2022.116665 |
| Authors | Viganò, Luigi; Guzzella, Licia; Marziali, Laura; Mascolo, Giuseppe; Bagnuolo, Giuseppe; Ciannarella, Ruggero; Roscioli, Claudio |
| Text | 479425 2023 10.1016/j.jenvman.2022.116665 Scopus 2 s2.0 85142327801 Ecological risk Lambro River Organic micropollutants Sediment transport Sedimentary records The last 50 years of organic contamination of a highly anthropized tributary of the Po River Italy Vigano, Luigi; Guzzella, Licia; Marziali, Laura; Mascolo, Giuseppe; Bagnuolo, Giuseppe; Ciannarella, Ruggero; Roscioli, Claudio Istituto di Ricerca Sulle Acque, Bari; Istituto di Ricerca sulle Acque, Italy We examined the temporal profiles of many organic micropollutants analysed in a sediment core sampled from a highly anthropized tributary of the Po River, the Lambro River. Analysed for extractable organic halogens EOX , total petroleum hydrocarbons C CTPH , polycyclic aromatic hydrocarbons PAHs , common legacy pollutants DDTs, PCBs , halogenated flame retardants PBDEs, DBDPE, TBBPA bis, TCBPA, TBBPA, HBCDs , organotins TBT, TPhT , antimicrobials TCS, TCC , fragrances AHTN, HHCB and phthalates DMP, DEP, DnBP, BBP, DEHP, DnOP , the dated sediment core revealed the historical record of 50 years of chemical contamination discharged into the Lambro and thereby the Po River. In this regard, the peak levels of PCBs and DDTs found in Lambro sediments were also identified in other sediment cores collected from the Po River prodelta in the Adriatic Sea, thus hundreds of kilometres downstream Combi et al., 2020 . The highest risk to aquatic organisms was associated with decades of high levels of C C TPH, PBDEs, PCBs, PAHs, DDTs, EOX, TCC, AHTN and DEHP, which in different periods of the contamination history, showed exceedances of guideline/threshold values. C C TPH and TCC, for example, were very high in the 1960s, whereas PCBs, DDTs, and PBDEs, peaked from the 1980s onward. The corresponding sums of PEC quotients ranged between 0.48 and 28.63, with a mean value ±SD for the entire recording period of 10.62 ± 9.83. Environmental legislations and improved wastewater treatments were the main drivers of the recent downward trends observed for most of the chemicals investigated. Floods in turn resulted in macroscopic yet temporary improvements in the chemical quality of the tributary, conveying contaminated sediments into the Po River. 326 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85142327801 origin=inward Articolo in rivista Academic Press. 0301 4797 Journal of environmental management Journal of environmental management J. environ. manag. luigi.vigano VIGANO LUIGI liciamaria.guzzella GUZZELLA LICIA MARIA claudiogiovanni.roscioli ROSCIOLI CLAUDIO GIOVANNI laura.marziali MARZIALI LAURA giuseppe.bagnuolo BAGNUOLO GIUSEPPE ruggiero.ciannarella CIANNARELLA RUGGIERO giuseppe.mascolo MASCOLO GIUSEPPE |
