Spatial and temporal trace metal distribution of a Peruvian basin: recognizing trace metal sources and assessing the potential risk
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Tipus de documentArticle
Data publicació2013-03-13
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Abstract
Recent efforts have been made to determine
the environmental impact of mining over the past
11 years in the Jequetepeque River basin, in northern
Peru. We have now analyzed data from two studies to
elucidate the spatial and temporal trace metal distribu-
tions and to assess the sources of contamination.
These two studies were carried out from 2003 to
2008 by a Peruvian government administration and
from 2008 to 2010 by us. We analyzed 249 samples
by principal component analysis, measuring: pH,
electrical conductivity, total dissolved solids, total
suspended solids, chloride, weak-acid-dissociable
cyanide, total cyanide, nitrite and nitrate, ammonium,
sulfate, and trace metals and metalloids (Al, As, Ca,
Cd, Cu, Cr, Fe, Mg, Mn, Ni, Pb, and Zn). Within the
spatial distribution of the basin, the highest Al, As, Cu,
Fe, Ni, and Pb concentrations were found at the closest
point to the mine sites for both periods of time, with
the higher peaks measured during the first years of the
sampling data. Temporal trends showed higher con-
centrations of Cu and Fe in samples taken before
2005, at which point the two mines were closed.
Risk assessment was quantified by the hazard quotient
as related to water ingestion. The risk for human
health posed by the concentrations of several trace
metals and metalloids was found to be highly adverse
(As and Cr), significant (Al, Cd, Cu, Fe, and Pb), or
minimal (Ni and Zn
CitacióYacoub, C. [et al.]. Spatial and temporal trace metal distribution of a Peruvian basin: recognizing trace metal sources and assessing the potential risk. "Environmental monitoring and assessment", 13 Març 2013, vol. 185, p. 7961-7978.
ISSN0167-6369
Col·leccions
- Departament d'Enginyeria Civil i Ambiental - Articles de revista [2.964]
- SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials - Articles de revista [186]
- EScGD - Engineering Sciences and Global Development - Articles de revista [79]
- Institut Universitari de Recerca en Ciència i Tecnologies de la Sostenibilitat - Articles de revista [49]
- LaCàN - Mètodes Numèrics en Ciències Aplicades i Enginyeria - Articles de revista [590]
- Departament d'Enginyeria Química - Articles de revista [2.212]
Fitxers | Descripció | Mida | Format | Visualitza |
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Spatial and tem ... ribution of a Peruvian.pdf | 4,638Mb | Accés restringit |