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| Main Authors: | , , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Environmental science and pollution research international
2026
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/42082745/ |
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| _version_ | 1868266051133767681 |
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| author | Malakhova, Ludmila Mirzoeva, Natalya Voitsekhovskaia, Veronika Malakhova, Tatyana Mironov, Oleg Diallo, Alpha Issaga Palle Keita, Ibrahima Hadid, Mahmoud Salameh, Maan |
| author_facet | Malakhova, Ludmila Mirzoeva, Natalya Voitsekhovskaia, Veronika Malakhova, Tatyana Mironov, Oleg Diallo, Alpha Issaga Palle Keita, Ibrahima Hadid, Mahmoud Salameh, Maan Malakhova, Ludmila Mirzoeva, Natalya Voitsekhovskaia, Veronika Malakhova, Tatyana Mironov, Oleg Diallo, Alpha Issaga Palle Keita, Ibrahima Hadid, Mahmoud Salameh, Maan |
| collection | PubMed - marine biology |
| contents | Persistent organic pollutants in the bottom sediments of rivers in Russia, Syria, and Guinea. Malakhova, Ludmila Mirzoeva, Natalya Voitsekhovskaia, Veronika Malakhova, Tatyana Mironov, Oleg Diallo, Alpha Issaga Palle Keita, Ibrahima Hadid, Mahmoud Salameh, Maan Syria Geologic Sediments Rivers Environmental Monitoring Water Pollutants, Chemical Polychlorinated Biphenyls Russia Guinea Persistent Organic Pollutants This study provides a comparative analysis of concentrations and spatial distribution patterns of DDT (including its metabolites) and polychlorinated biphenyls (PCBs) in bottom sediments from three rivers with contrasting environmental and anthropogenic settings: the Salgir (Russia), the Asi (Orontes, Syrian Arab Republic), and the Fatala (Republic of Guinea). Surface and sediment-core samples collected in 2023 revealed substantial spatial heterogeneity in POPs contamination. In the Salgir River, ∑DDT concentrations reached up to 562 ng/g, with DDT/DDE ratios > 0.79 indicating recent inputs, likely from legacy pesticide storage sites. ∑6PCB concentrations (sum of six indicator congeners) reached 252 ng/g, with evidence of ongoing inputs in industrial zones. The Asi River exhibited the highest ∑6PCB levels (up to 863 ng/g), particularly near industrial facilities, with a congener profile dominated by highly chlorinated forms (hexa- to octachlorobiphenyls), consistent with technical PCB mixtures. The distribution of these contaminants is primarily associated with long-term significant anthropogenic loads of various nature in the Asi River region, although identifying direct sources of PCBs entering the ecosystem of the river requires additional research. The Fatala River showed minimal contamination (∑6PCB |
| format | Artículo científico |
| id | pubmed_42082745 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | Environmental science and pollution research international |
| record_format | pubmed |
| spellingShingle | Persistent organic pollutants in the bottom sediments of rivers in Russia, Syria, and Guinea. Malakhova, Ludmila Mirzoeva, Natalya Voitsekhovskaia, Veronika Malakhova, Tatyana Mironov, Oleg Diallo, Alpha Issaga Palle Keita, Ibrahima Hadid, Mahmoud Salameh, Maan Syria Geologic Sediments Rivers Environmental Monitoring Water Pollutants, Chemical Polychlorinated Biphenyls Russia Guinea Persistent Organic Pollutants Persistent organic pollutants in the bottom sediments of rivers in Russia, Syria, and Guinea. Malakhova, Ludmila Mirzoeva, Natalya Voitsekhovskaia, Veronika Malakhova, Tatyana Mironov, Oleg Diallo, Alpha Issaga Palle Keita, Ibrahima Hadid, Mahmoud Salameh, Maan Syria Geologic Sediments Rivers Environmental Monitoring Water Pollutants, Chemical Polychlorinated Biphenyls Russia Guinea Persistent Organic Pollutants This study provides a comparative analysis of concentrations and spatial distribution patterns of DDT (including its metabolites) and polychlorinated biphenyls (PCBs) in bottom sediments from three rivers with contrasting environmental and anthropogenic settings: the Salgir (Russia), the Asi (Orontes, Syrian Arab Republic), and the Fatala (Republic of Guinea). Surface and sediment-core samples collected in 2023 revealed substantial spatial heterogeneity in POPs contamination. In the Salgir River, ∑DDT concentrations reached up to 562 ng/g, with DDT/DDE ratios > 0.79 indicating recent inputs, likely from legacy pesticide storage sites. ∑6PCB concentrations (sum of six indicator congeners) reached 252 ng/g, with evidence of ongoing inputs in industrial zones. The Asi River exhibited the highest ∑6PCB levels (up to 863 ng/g), particularly near industrial facilities, with a congener profile dominated by highly chlorinated forms (hexa- to octachlorobiphenyls), consistent with technical PCB mixtures. The distribution of these contaminants is primarily associated with long-term significant anthropogenic loads of various nature in the Asi River region, although identifying direct sources of PCBs entering the ecosystem of the river requires additional research. The Fatala River showed minimal contamination (∑6PCB |
| title | Persistent organic pollutants in the bottom sediments of rivers in Russia, Syria, and Guinea. |
| topic | Syria Geologic Sediments Rivers Environmental Monitoring Water Pollutants, Chemical Polychlorinated Biphenyls Russia Guinea Persistent Organic Pollutants |
| url | https://pubmed.ncbi.nlm.nih.gov/42082745/ |