Trace Elements in the Marine Sediments of the La Paz Lagoon, Baja California Peninsula, Mexico: Pollution Status in 2013
| Autor: | Evgueni Shumilin, Griselda Margarita Rodríguez-Figueroa, Habacuc Pérez-Tribouillier |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Pollution
Geologic Sediments Range (biology) Health Toxicology and Mutagenesis media_common.quotation_subject Weathering Toxicology California Arsenic Ecotoxicology Seawater Cities Water pollution Mexico media_common Geography Ecology Sediment Biota General Medicine Trace Elements Lead Environmental chemistry Uranium Water quality Water Pollutants Chemical Cadmium Environmental Monitoring |
| Zdroj: | Bulletin of environmental contamination and toxicology. 95(1) |
| ISSN: | 1432-0800 |
| Popis: | To determine the actual concentrations of trace elements in surface sediments from the La Paz Lagoon, as well as their associations and possible origins, 91 sediment samples were analyzed for more than 50 elements using a combination of ICP-MS and ICP-AES. The results of a principal component analysis are used to distinguish four associative groups within the elements. Natural enrichment of As, Cd and U occurs due to the supply of weathered phosphorites from the El Cien formation located to the north-west of the lagoon. Sediment quality indices for potentially toxic trace elements do not show any probable impact on the biota of the lagoon. Only the concentrations of As in 30 % of the stations and Cu in 20 % of them exceed related effect range low levels. The highest concentration of Pb (36.8 mg kg(-1)) was measured in the sediments near the City of La Paz. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink