Listar Química por procedencia "UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro en Investigación en Contaminación Ambiental (CICA)"
Mostrando ítems 1-20 de 26
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Alternative approaches to determine the efficiency of biomixtures used for pesticide degradation in biopurification systems
(2018)Biopurification systems were developed for the biological treatment of pesticide-containing wastewaters originated from agricultural production. They are aimed at reducing point-source contamination related to the ... -
Analysis of glyphosate and aminomethylphosphonic acid in leaves from Coffea arabica using high performance liquid chromatography with quadrupole mass spectrometry detection
(2016-01-01)Glyphosate is a commonly applied herbicide in coffee plantations. Because of its non-selective mode of action it can damage the crop exposed through spray drift. Therefore, it is of interest to study glyphosate fate in ... -
Análisis de Plaguicidas Organoclorados en Grasa Humana en Población Costarricense sin Riesgo Ocupacional
(2005-06-09)Se estudió el contenido de residuos de plaguicidas organoclorados y otros hidrocarburos clorados en tejido adiposo de costarricenses de ambos sexos (25 hombres y 26 mujeres). Las muestras fueron tomadas durante intervenciones ... -
Análisis de residuos de plomo en repollo de Costa Rica
(1984)Lead residues analysis in cabbage. Cabbage and soil samples from the main cabbage growing areas of Costa Rica were analyzed for lead residues. Lead residues result from the use of lead arseniate as an insecticide and ... -
Aspectos prácticos de la validación e incertidumbre en mediciones químicas
(Buenos Aires, Argentina, 2009)En este libro se abordan dos temas relacionados con uno de los más importantes aspectos en lo relativo a la calidad de la información generada por un laboratorio de análisis químico: la validación de los métodos utilizados, ... -
Bioavailability of Xenobiotics in the Soil Environment
(2010)When synthetic, xenobiotic compounds such as agrochemicals and industrial chemicals are utilized, they eventually reach the soil environment where they are subject to degradation, leaching, volatilization, sorption, and ... -
Biodegradation of Pharmaceuticals by Fungi and Metabolites Identification
(2012-01-01)Pharmaceutical compounds comprise a widely employed group of therapeutic agents now considered as emerging micropollutants. This chapter summarizes the state of the art in the degradation of pharmaceuticals by fungi ... -
Calidad del Aire en la Sede Central Rodrigo Facio de la Universidad De Costa Rica
(2014-12)Este estudio vigiló la calidad del aire en la Sede Universitaria Rodrigo Facio de la Universidad de Costa Rica con el fin de mantener informadas a las autoridades universitarias, cantonales, del Ministerio de Ambiente y ... -
Caracterización de la calidad del agua de la Quebrada Sanatorio en Tierra Blanca ubicada en una zona agrícola de la provincia de Cartago y sus implicaciones para la salud pública
(2012-10)Se monitoreó la calidad del agua de la Quebrada Sanatorio (Tierra Blanca, Cartago, Costa Rica), durante abril, junio, agos to y octubre de 2011. Se establecieron tres puntos de muestreo utilizando una metodología de ... -
Design of an optimized biomixture for the degradation of carbofuran based on pesticide removal and toxicity reduction of the matrix
(2015-12)Pesticide biopurification systems contain a biologically active matrix (biomixture) responsible for the accelerated elimination of pesticides in wastewaters derived from pest control in crop fields. Biomixtures have been ... -
Determinación de plaguicidas organoclorados en leche materna en Costa Rica
(1984)DDT and DDE We[e detected in the milk of 51 nursing mothers in Costa Rica. In the provinces of Puntarenas, Guanacaste and Limón, where a campaign against malaria taok place during the last thrce decades and where CJops ... -
Ecotoxicological analysis during the removal of carbofuran in fungal bioaugmented matrices
(2016-02)Biomixtures are used for the removal of pesticides from agricultural wastewater. As biomixtures employ high content of lignocellulosic substrates, their bioaugmentation with ligninolytic fungi represents a novel approach ... -
Evaluation of a recent product to remove lipids and other matrix co-extractives in the analysis of pesticide residues and environmental contaminants in foods
(2016-06-03)This study demonstrates the application of a novel lipid removal product to the residue analysis of 65 pesticides and 52 environmental contaminants in kale, pork, salmon, and avocado by fast, low pressure gas chromatography ... -
Fisico-química de las aguas superficiales de la Cuenca del río Rincón, Península de Osa, Costa Rica
(2010-12)The Rincon River Basin is characterized by steep and rugged topography with outcrops of recent sediments as well as igneous and sedimentary rocks. The area is mostly covered by forest (Tropical Wet Forest) and agricultural ... -
Granular Activated Carbon Treatment May Result in Higher Predicted Genotoxicity in the Presence of Bromide
(2016-07-28)Certain unregulated disinfection byproducts (DBPs) are more of a health concern than regulated DBPs. Brominated species are typically more cytotoxic and genotoxic than their chlorinated analogs. The impact of granular ... -
Influence of rice field agrochemicals on the ecological status of a tropical stream
(2016-01-15)Many tropical countries contain a high density of protected ecosystems, and these may often be bordered by intensive agricultural systems. We investigated the chemical and ecological status of a stream connecting an area ... -
Índice fisicoquímico de la calidad de agua para el manejo de lagunas tropicales de inundación
(2008-12-01)We propose ICA-L, a wetland physicochemical water quality index (WWQI), to be used as a management tool for seasonal-flooding lagoons in Palo Verde National Park, Guanacaste, Costa Rica. The goal is to preserve their ... -
Metals in coastal mollusks of Costa Rica
(2015-12)The input of contaminants to coastal ecosystems is a global problem on the rise. Data on metal pollution from tropical sites is often lacking and pilot surveys are urgently needed to provide a general framework to estimate ... -
Naproxen degradation test to monitor Trametes versicolor activity in solid-state bioremediation processes
(2010-07-15)The white-rot fungus Trametes versicolor has been studied as a potential agent for the removal of envi ronmental pollutants. For long-time solid-phase bioremediation systems a test is required to monitor the metabolic ... -
Parámetros físico-químicos en aguas costeras de la Isla del Coco, Costa Rica (2001-2007)
(2008-11-17)Four cruises to Isla del Coco (Cocos Island), Costa Rica, were carried out in order to gather oceanographic data related to surface temperature, salinity, dissolved oxygen concentration, Secchi disk depth, nutrient ...