Título
Pollution of Water for domestic use and human consumption, by heavy metals Pb, Cd, Cr, Zn and As, Derived from mining Activity in Hidalgo del Parral, Chihuahua, México
Autor
LUIS MIGUEL RODRIGUEZ VAZQUEZ
LUIS ALBERTO LOZOYA TREVIZO
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Research was done with the objective of evaluating the quality of the water supplied to the
potable water system in Hidalgo Del Parral, which comes from two main supply sources: wells
from Valle del Verano, which provide water to the east side of the city, and the Water Treatment
Plant, which receives water from different mines and supplies the west side of the city. When this
plant is overcome on its capacity of treatment, a part of the water from the mines is fed directly to
the northwest part of the city. The metals lead (Pb), chromium (Cr), cadmium (Cd), zinc (Zn),
and arsenic (As) were analyzed by atomic absorption (AA) technique, based in the United States
Environmental Protection Agency (EPA) Method 7000B (Revision 2, February 2007). The
digestion process was done according to the guidelines established in Method NMX-AA-051-
SCFI-2001, Analysis of Water-Determination of Metals by Atomic Absorption, developed by the
National Standardization Technical Committee for Environmental Protection (Mexico). The
samples were collected from the following points: 13 wells and 2 re-pumping stations of Valle
del Verano, the inlet and outlet of the Water Treatment Plant and domestic faucets. The east side
of the city, supplied by the wells of El Verano, is metal-pollution free. The water that comes from
the mines contains high concentrations of As, Zn, Cd and Pb, with levels that can get to 0.12,
32.6, 0.26 and 3.5 mg/L, respectively. This water pollution generated by mining can be
concluded from the high levels found in the domestic samples in which, for several points, the
concentrations exceed the parameters set by the current guideline. According to the results, it is
vital to set a plan of remediation for the water that comes from the mines, because there is a great
risk for health in the consumption of this water.
Fecha de publicación
2011
Tipo de publicación
Memoria de congreso
Versión de la publicación
Versión enviada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Repositorio Orígen
Fuente de Objetos Científicos Open Access
Descargas
390