Heavy metal anomalies in lagoon sediments related to intensive agriculture in Altata-Ensenada del Pabellon coastal system (SE Gulf of California)

摘要

Havy metal concentrations were examined in surface sediments from 79 sites within the Altata-Ensenada del pabellon lagoon system. Data were normalized to separate natural form anthropogenic factors using aluminum and lithium as conservative elements and following Two different discriminating criteria. For the normalizaitonprocss, the natural metal concentrations were assumed to vary cnsistently with Aluminum and lithium, unless the metal contents were of human origin.