Distribution of selenium, molybdenum and uranium in sediment cores from the Colorado River delta, Baja California, Mexico.
Bull Environ Contam Toxicol
; 88(1): 104-7, 2012 Jan.
Article
em En
| MEDLINE
| ID: mdl-22052136
The distribution of selenium, molybdenum and uranium was studied in ~1.5 m sediment cores from the Colorado River delta, at the Colorado (CR) and Hardy (HR) riverbeds. Core HR2 showed highest Se, Mo and U concentrations at its bottom (2.3, 0.95 and 1.8 µg g(-1)) within a sandy-silt layer deposited prior to dam construction. In CR5 the highest concentrations of these elements (0.9, 1.4 and 1.7 µg g(-1) respectively) were located at the top of the core within a surface layer enriched in organic carbon. A few samples from HR2 had Se above the probable toxic effect level guidelines.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Selênio
/
Poluentes Químicos da Água
/
Urânio
/
Sedimentos Geológicos
/
Rios
/
Molibdênio
País/Região como assunto:
Mexico
Idioma:
En
Revista:
Bull Environ Contam Toxicol
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Estados Unidos