PCB composition in flood material and sediments from the Guadiana River estuary
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Autónoma de Baja California
2005
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| _version_ | 1876422339081535488 |
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| author | Marta Martins |
| author_facet | Marta Martins |
| contents | PCB composition in flood material and sediments from the Guadiana River estuary Marta Martins Ana Maria Ferreira Carlos Vale Ciencias de la Tierra PCB congeners sediments flood material Guadiana River Coarse material and freshly deposited particles transported by the exceptional flood of January 2001 were sampled at eightsites along the Guadiana River and estuarine shorelines. Two months after moderate river flows, we collected 27 surfacesediments from the river-estuarine system and one sediment core from the coastal area. The PCB levels in sediments were lowerthan 1.1 ng g1, which is in conformity with the absence of industrial activities in the Guadiana drainage basin. Materialtransported by the flood contained higher PCB concentrations (0.81.8 ng g1) than surface sediments (0.11.1 ng g1), indicatingthe importance of these events in the transport of PCB to this low-contaminated estuarine system. These differences were notrelated to organic carbon content. Furthermore, this material is enriched in less chlorinated compounds as usually occurs far awayfrom point sources. The diffuse transport influences the CB composition of sediment deposits on the adjacent coast, as revealedby variations in the depth profiles of the tri-/hexa-chlorinated ratio, organic carbon content and Si/Al ratio. 2005 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48003115 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1B Vol.31 |
| format | Artículo científico |
| id | redalyc_48003115 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Universidad Autónoma de Baja California |
| spellingShingle | PCB composition in flood material and sediments from the Guadiana River estuary Marta Martins Ciencias de la Tierra PCB congeners sediments flood material Guadiana River PCB composition in flood material and sediments from the Guadiana River estuary Marta Martins Ana Maria Ferreira Carlos Vale Ciencias de la Tierra PCB congeners sediments flood material Guadiana River Coarse material and freshly deposited particles transported by the exceptional flood of January 2001 were sampled at eightsites along the Guadiana River and estuarine shorelines. Two months after moderate river flows, we collected 27 surfacesediments from the river-estuarine system and one sediment core from the coastal area. The PCB levels in sediments were lowerthan 1.1 ng g1, which is in conformity with the absence of industrial activities in the Guadiana drainage basin. Materialtransported by the flood contained higher PCB concentrations (0.81.8 ng g1) than surface sediments (0.11.1 ng g1), indicatingthe importance of these events in the transport of PCB to this low-contaminated estuarine system. These differences were notrelated to organic carbon content. Furthermore, this material is enriched in less chlorinated compounds as usually occurs far awayfrom point sources. The diffuse transport influences the CB composition of sediment deposits on the adjacent coast, as revealedby variations in the depth profiles of the tri-/hexa-chlorinated ratio, organic carbon content and Si/Al ratio. 2005 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48003115 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1B Vol.31 |
| title | PCB composition in flood material and sediments from the Guadiana River estuary |
| topic | Ciencias de la Tierra PCB congeners sediments flood material Guadiana River |
| url | https://www.redalyc.org/articulo.oa?id=48003115 |