Characterization Of Lead And Arsenic Levels In
Sediment Of The Lower Basin Of The San Pedro
River, Mexico And Its Importance Regarding
Human Health
Author(s)
B. E. Melendez, A. H. Rubio, R. Quintana & C. Pinedo
Abstract
This study was conducted in a major agricultural area in the state of Chihuahua,
Mexico. Sediment samples were collected from five sites in the San Pedro River
basin with the objective of detecting levels of cadmium (Cd), arsenic (As) and
lead (Pb). Site 1 was located near the Presa las Virgenes dam (PV), site 2 near
the locations of Delicias-Rosales (RD), site 3 near the town of Meoqui (M), site
4 in the community of El Torreon (ET) and site 5 near the communities of Junta
de los Rios Conchos and San Pedro (LJ). The metals analysis was conducted
using an Inductively Couplet Plasma Atomic Emission Spectrometer (ICP-OES)
Perkin Elemer 2000. The results were compared with NOM-147-
SEMARNAT/SSA1-2004. Cd levels were not determined in any soil sample.
The results indicated that Pb levels were below the established NOM-147 and
that location M had the highest value with a mean of 9.15 mg kg-1. The highest
concentration levels of arsenic were found in the RD locale with 14.56 mg kg-1
during the December sampling. In conclusion, lead and arsenic levels in mud
from the San Pedro River basin are below the norm. Still, As levels might be
significant to human health, especially for the communities established along the
San Pedro River.
Keywords: metals, lead, arsenic, Mexico, human health.
Keywords
metals, lead, arsenic, Mexico, human health
Related Book
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