Citas bibligráficas
Hinostroza, J., (2021). Modelamiento de isoconcentraciones y determinación de los niveles de fondo para arsénico en el suelo superficial no intervenido de Yanacocha [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/4581
Hinostroza, J., Modelamiento de isoconcentraciones y determinación de los niveles de fondo para arsénico en el suelo superficial no intervenido de Yanacocha []. PE: Universidad Nacional Agraria La Molina; 2021. https://hdl.handle.net/20.500.12996/4581
@mastersthesis{renati/247572,
title = "Modelamiento de isoconcentraciones y determinación de los niveles de fondo para arsénico en el suelo superficial no intervenido de Yanacocha",
author = "Hinostroza Rivera, Jorge Eduardo",
publisher = "Universidad Nacional Agraria La Molina",
year = "2021"
}
The objectives of this research are to determine the background levels for arsenic (As) and to model isoconcentrations in the undisturbed surface soil of Minera Yanacocha S.R.L (Yanacocha). Peruvian regulation, Supreme Decree N° 011-2017-MINAM, includes arsenic (As) as a parameter of interest for health and environment and defines as a background level the concentration of controlled substances on soil that were not generated for the activity of analysis and there are naturally on soil. Considering that there is no only one method used to establish background levels for arsenic on soil and distributions of elements concentrations are main influenced by parent material and edaphic parameters as: pH, organic carbon, clay, cation exchange capacity, iron and total aluminum on the top soil (0- 0.1m), it was proposed to gather historical information of baseline of soil and geological explorations on the property of Minera Yanacocha S.R.L (Yanacocha), relating trough statistical and geostatistical methods; geology, edaphic information and georeferenced concentrations of As on the soil of Yanacocha. The statistic treatment of historical concentrations of As considered the Anderson-Darling Normality test and the Grubbs test, with these ones, it was determined with 95% of confidence that the information comes from one data base, without presence of atypical information, as well, trough statistical descriptions was determined the background level of As in Topsoil: 2 to 836 mg/kg. The distribution of As showed that is in higher concentrations on areas with geological characteristics: material of volcanic origin or moraine, concentrations of As on rocky formations >140 mg/kg, presence of hydrothermal alteration, proximity to local faults; on Topsoil: pH 3.6 to 4.5, Organic carbon >2.32% and concentrations of Fe >20,000 mg/kg.
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