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Concentration of Heavy Metals in Soils Under Different Tillage Systems
Concentración de metales pesados en suelos agrícolas bajo diferentes sistemas de labranza
dc.creator | Mendoza-Escalona, Betty | |
dc.creator | Torres-Rodríguez, Duilio | |
dc.creator | Merú Marcó, Lué | |
dc.creator | Gómez, Carlos | |
dc.creator | Estanga-Barrios, Marisela | |
dc.creator | García-Orellana, Yelitza | |
dc.date | 2021-02-26 | |
dc.identifier | https://revistas.itm.edu.co/index.php/tecnologicas/article/view/1738 | |
dc.identifier | 10.22430/22565337.1738 | |
dc.description | Heavy metals are mineral elements whose accumulation in soils, water, and vegetal tissues constitutes a public health risk. High concentrations of these elements are associated with cancer and kidney and liver diseases. The accumulation of such metals is the consequence of industrial activities, but also agricultural production due to the excessive use of agrochemicals. Therefore, this study assessed the heavy metals contamination risk in Turen, in the northwest of Venezuela. Cd, Cu, Co, Zn, Fe, Mn, Ni, As, and Se were found in soils under two tillage systems (conventional and direct sowing) at two physiographic positions: high and low napa by X- ray fluorescence. The samples were taken at two depths, i.e., 0–10 and 10–20 cm, with nine samples per position in each tillage system. The results show that the content of Co, Cu, Ni, Cd, and Zn was higher in direct sowing due to the extended use of phosphate fertilizers. The greatest accumulation was observed at the low napa, which is associated with higher clay content and cation exchange capacity. The values of Co, Cu, and Cd were higher than the maximum allowable levels in most international environmental regulations. The accumulation of heavy metals in Turén soils, both in the conventional tillage system and in the direct sowing system, are the result of the continuous use of agrochemicals, in particular phosphate fertilization, so it is recommended to reduce the use of agrochemicals, in addition to carrying out bioremediation actions to eliminate them from the soil and avoid long-term contamination problems and health problems associated with their presence in soils and waters. | en-US |
dc.description | Los metales pesados son elementos minerales cuya acumulación en el suelo, el agua y los tejidos vegetales constituyen un riesgo para la salud pública. Enfermedades cancerígenas, renales y hepáticas están asociadas a altas concentraciones de estos elementos. De igual forma, la acumulación de metales pesados está relacionada con actividades industriales, pero también a la producción agrícola, producto del uso excesivo de agroquímicos. Para evaluar los riesgos de contaminación por metales pesados en suelos agrícolas de la localidad de Turén al noroccidente de Venezuela, se midió el contenido de Cd, Cu, Co, Zn, Fe, Mn, Ni, Ar y Se en suelos bajo dos sistemas de labranza - convencional y siembra directa - en dos posiciones fisiográficas: napa alta y napa baja, mediante fluorescencia de rayos X. Las muestras fueron tomadas a dos profundidades: 0-10 y 10-20 cm, con 9 muestras por posición dentro de cada sistema de labranza. Los resultados mostraron que el contenido de Co, Cu, Ni, Cd y Zn fue mayor en el sistema de siembra directa debido al uso prolongado de abonos fosfatados Asimismo, la mayor acumulación se observó en la napa baja, lo cual estuvo relacionado a un mayor contenido de arcilla y a la capacidad de intercambio catiónico. Finalmente, se determinó que los valores de Co, Cu y Cd estuvieron por encima de los valores máximos permitidos por las normas ambientales internacionales La acumulación de metales pesados en suelos de Turén, tanto en el sistema de labranza convencional como en el de siembra directa, son producto del uso continuo de agroquímicos, en particular de la fertilización fosfatada, por lo que se recomienda reducir el uso de agroquímicos, además de llevar cabo acciones de biorremediación para su eliminación del suelo y evitar los problemas de contaminación que a largo plazo y problemas de salud asociada a la presencia de los mismos en suelos y aguas. | es-ES |
dc.format | application/pdf | |
dc.format | application/zip | |
dc.format | text/xml | |
dc.format | text/html | |
dc.language | spa | |
dc.language | eng | |
dc.publisher | Instituto Tecnológico Metropolitano (ITM) | en-US |
dc.relation | https://revistas.itm.edu.co/index.php/tecnologicas/article/view/1738/1907 | |
dc.relation | https://revistas.itm.edu.co/index.php/tecnologicas/article/view/1738/1919 | |
dc.relation | https://revistas.itm.edu.co/index.php/tecnologicas/article/view/1738/1910 | |
dc.relation | https://revistas.itm.edu.co/index.php/tecnologicas/article/view/1738/1911 | |
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dc.rights | Copyright (c) 2021 TecnoLógicas | en-US |
dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0 | en-US |
dc.source | TecnoLógicas; Vol. 24 No. 51 (2021); e1738 | en-US |
dc.source | TecnoLógicas; Vol. 24 Núm. 51 (2021); e1738 | es-ES |
dc.source | 2256-5337 | |
dc.source | 0123-7799 | |
dc.subject | Soil contamination | en-US |
dc.subject | environmental impact | en-US |
dc.subject | agricultural soils | en-US |
dc.subject | soil measurements | en-US |
dc.subject | Contaminación del suelo | es-ES |
dc.subject | deterioro ambiental | es-ES |
dc.subject | suelos agrícolas | es-ES |
dc.subject | medidas de suelo | es-ES |
dc.title | Concentration of Heavy Metals in Soils Under Different Tillage Systems | en-US |
dc.title | Concentración de metales pesados en suelos agrícolas bajo diferentes sistemas de labranza | es-ES |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:eu-repo/semantics/publishedVersion | |
dc.type | Research Papers | en-US |
dc.type | Artículos de investigación | es-ES |
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