With the sample of stream sediments in the basin of the river Torres – Vizcarra (Huanuco-Ancash), which have been subjected to the chemical speciation method, it has been possible to define the dispersion process for the main metallic elements. This characterization is define by the relation between the total metal content and the residual content of the sample, giving as a result a factor named relative dispersion, which it has been determined for the main elements, highlighting among them, copper, lead, zinc and cadmium because of its very high mobility, while chromium and vanadium for its low mobility. The application of the sequential extraction technique allows defining the fraction of metallic elements moving in a specific environment, identifying the bioavailable fractions, as well as allows identifying the real environmental impact produced by the dispersion of heavy metals in ...

Application of sequential extraction technique allows us to define the fractions of the metallic elements that move in a given environment, identifying bioavailable fractions and thus the actual environmental impact of the dispersion of heavy metals in sediments. The total analysis results compared to the recommended levels the Andalusian show that arsenic and zinc exceeded the so-called action thresholds, assuming that the soil is contaminated at levels high toxicity. The results of chemical speciation indicates that fractions of metals are primarily associated with the hydrated oxides of iron and manganese and the organic material and the residual fraction, so that the bioavailable fraction reaches fairly low levels, meaning that no there is a negative impact on the life cycle in the upper reaches of rivers Vizcarra Torres.

Application of sequential extraction technique allows us to define the fractions of the metallic elements that move in a given environment, identifying bioavailable fractions and thus the actual environmental impact of the dispersion of heavy metals in sediments. The total analysis results compared to the recommended levels the Andalusian show that arsenic and zinc exceeded the so-called action thresholds, assuming that the soil is contaminated at levels high toxicity. The results of chemical speciation indicates that fractions of metals are primarily associated with the hydrated oxides of iron and manganese and the organic material and the residual fraction, so that the bioavailable fraction reaches fairly low levels, meaning that no there is a negative impact on the life cycle in the upper reaches of rivers Vizcarra Torres.

With the sample of stream sediments in the basin of the river Torres – Vizcarra (Huanuco-Ancash), which have been subjected to the chemical speciation method, it has been possible to define the dispersion process for the main metallic elements. This characterization is define by the relation between the total metal content and the residual content of the sample, giving as a result a factor named relative dispersion, which it has been determined for the main elements, highlighting among them, copper, lead, zinc and cadmium because of its very high mobility, while chromium and vanadium for its low mobility. The application of the sequential extraction technique allows defining the fraction of metallic elements moving in a specific environment, identifying the bioavailable fractions, as well as allows identifying the real environmental impact produced by the dispersion of heavy metals in ...

En esta investigación se evalúa la degradación química y su impacto en los suelos de la cuenca del río Mantaro, en el departamento de Junín- Perú, considerando que esta es producto de procesos, sean de carácter natural como antropogénico. Los resultados de la investigación permiten determinar áreas que puedan estar impactadas negativamente en lo que se refiere a la distribución de metales pesados en los suelos. El estudio consiste en un muestreo de suelos, habiéndose recolectado 225 muestras superficiales y 64 muestras profundas. La técnica utilizada es especializada, para lo cual se utiliza como instrumento los estándares de calidad ambiental (ECA) de suelos. Al comparar los resultados analíticos con los ECA para suelos de uso agrícola, As (50ppm), Cd (0.9ppm) y Pb (70ppm), estos han sido superados largamente en algunos lugares en As (649ppm), Cd (16.9ppm) y Pb (2021ppm...

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95 p., 4 mapas

109 p., 4 mapas

El Instituto Geológico, Minero y Metalúrgico (INGEMMET), ente rector de la geología del Perú, ha desarrollado un primer avance en la determinación del potencial minero metálico peruano, en términos de estimación del valor económico proyectado hasta el año 2050, en la visión de cuantificar la riqueza generada que queda para el Estado y que proviene directa e indirectamente de la actividad minera metálica. La estimación se basa en la hipótesis de continuar explotando las reservas y recursos minerales de las minas en actual operación; de los proyectos mineros en cartera; de los recursos de los proyectos con exploración avanzada (EIA-sd), así como los recursos de áreas con alto potencial geológico minero. Para determinar el ingreso económico de la actividad minera metálica que queda como usufructo para la nación, se ha tomado en cuenta los resultados del estudio desarro...

4 páginas

123 p.

158 p., 9 mapas

86 p., 8 mapas

In the Mantaro river basin, located in Central Peru, an agricultural activity developed, even supplying the capital of Peru. An intense mining activity took place in the headwaters of this basin, and the La Oroya Metallurgical Complex was built a century ago. Mining activity has left mining environmental liabilities, which directly impact the quality of the water and the soil. In this sense, it is very important to investigate the presence of heavy metals and identify the geochemical associations present in surface waters to assess the real impact on the environment. For this purpose, 30 water samples were analyzed, collected from the Mantaro River and the channels that derive water for irrigation and animal consumption. The samples were analyzed by ICP-MS techniques, inductively coupled plasma-mass spectrometry, and ICP-AES, inductively coupled plasma-optical emission spectrometry. For ...

98 p., 8 mapas

La definición de formaciones en el sur del Perú ha dado como resultado un gran número de nombres propuestos por diversos autores. En el proceso de revisión de la geología de esta parte, por el INGEMMET se está tratando de uniformizar de la forma más adecuada (aunque esto no satisfaga a toda la comunidad geológica) la nomenclatura de las unidades litoestratigráficas. La zona de estudio no ha podido ser la excepción, es por esto que en este artículo se trata las unidades en conjunto estableciendo sus relaciones laterales y en la vertical, aludiendo el por qué la diferencia de nombres, que en su momento fueron utilizado por otros autores. El presente estudio ha sido realizado dentro del proyecto de Revisión y Actualización de la Carta Geológica Nacional (parte de las Franjas 2 y 3) llevado a cabo por INGEMMET. Los cuadrángulos Pichacani (33-v) y Lagunillas (32-u) y parte de ...

118 p., 8 mapas

143 p., 6 mapas

9 páginas