Spatial distribution and enrichment of mercury in surface sediments off the northwest coast of Baja California, Mexico
An evaluation was made of the distribution and enrichment of Hg in surface sediments collected in August 1998 at 37 stations along the northwest coast of Baja California (NCBC). Mercury was analyzed by cold-vapour atomic absorption spectrophotometry. The percentages of mud ( < 63 µm) and orga...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | México |
| Institución: | UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA |
| Repositorio: | Ciencias Marinas |
| Idioma: | inglés |
| OAI Identifier: | oai:cienciasmarinas.com.mx:article/1234 |
| Acceso en línea: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1234 |
| Access Level: | acceso abierto |
| Palabra clave: | Baja California contamination marine sediment mercury contaminación sedimentos marinos mercurio |
| Sumario: | An evaluation was made of the distribution and enrichment of Hg in surface sediments collected in August 1998 at 37 stations along the northwest coast of Baja California (NCBC). Mercury was analyzed by cold-vapour atomic absorption spectrophotometry. The percentages of mud ( < 63 µm) and organic matter were also measured. Mercury concentrations showed a homogeneous spatial distribution in the study area. The mean concentration of Hg (58.2 ng g–1) was similar to that found in the Southern California Bight. Mercury enrichment was observed at four stations located in the northern and central zones of the study area. In general, the Hg concentrations (30.4–96.5 ng g–1) were relatively low and pose no environmental concerns according to North American marine sediment quality guidelines. No correlations were found between Hg and mud or organic matter, suggesting that these variables do not influence the concentration and spatial distribution of this element in sediments from NCBC. |
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