Utilización de índices de contaminación por hidrocarburos en pianguas (Anadara Tuberculosa) obtenidas en el Golfo de Nicoya, Costa Rica para la categorización del grado de contaminación.
Fecha
2019-06-07
Autores
Morera González, Marilú
Saravia Arguedas, Ana Yury
García Céspedes, Jairo
Mena-Rivera, Leonardo
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Editor
Universidad Nacional (Costa Rica)
Resumen
Antropogénicas que lo hacen vulnerable a la contaminación por sustancias como los hidrocarburos del petróleo, los cuales pueden asociarse con otras partículas y quedar disponibles para la biota y bioacumularse en el tejido lipídico de los organismos. La aplicación de índices de contaminación permite realizar una valoración de la presencia de estos compuestos. Debido a la alta captura y comercialización se utilizó la piangua, cuyas muestras se obtuvieron de junio del 2013 a diciembre del 2014, se digirieron en Soxhlet, se purificaron en columna de alúmina activada para separar los hidrocarburos alifáticos de los aromáticos y se analizaron por cromatografía de gases acoplado al detector de masas (GC-MS) y por espectrofluorofotometría, respectivamente. A los resultados obtenidos se les aplicó los índices propuestos por Ramírez et al. petrogénicos en la isla de Chira tanto en época seca como en época lluviosa en contraste con las demás zonas muestreadas, Mata Limón, Chacarita, Paquera y Punta Morales que solo presentan altas concentraciones en una de las dos épocas y en menor grado que Chira.
Anthropogenic that make it vulnerable to contamination by substances such as petroleum hydrocarbons, which can associate with other particles and become available to biota and bioaccumulate in the lipid tissue of organisms. The application of contamination indices allows an assessment of the presence of these compounds. Due to the high capture and commercialization, the piangua was used, whose samples were obtained from June 2013 to December 2014, they were digested in Soxhlet, they were purified in an activated alumina column to separate the aliphatic hydrocarbons from the aromatic ones and they were analyzed by chromatography. of gases coupled to the mass detector (GC-MS) and by spectrofluorophotometry, respectively. The indices proposed by Ramírez et al. petrogenic on the island of Chira both in the dry season and in the rainy season in contrast to the other sampled areas, Mata Limón, Chacarita, Paquera and Punta Morales, which only present high concentrations in one of the two seasons and to a lesser degree than Chira.
Anthropogenic that make it vulnerable to contamination by substances such as petroleum hydrocarbons, which can associate with other particles and become available to biota and bioaccumulate in the lipid tissue of organisms. The application of contamination indices allows an assessment of the presence of these compounds. Due to the high capture and commercialization, the piangua was used, whose samples were obtained from June 2013 to December 2014, they were digested in Soxhlet, they were purified in an activated alumina column to separate the aliphatic hydrocarbons from the aromatic ones and they were analyzed by chromatography. of gases coupled to the mass detector (GC-MS) and by spectrofluorophotometry, respectively. The indices proposed by Ramírez et al. petrogenic on the island of Chira both in the dry season and in the rainy season in contrast to the other sampled areas, Mata Limón, Chacarita, Paquera and Punta Morales, which only present high concentrations in one of the two seasons and to a lesser degree than Chira.
Descripción
Palabras clave
CONTAMINATION, CONTAMINACION, HIDROCARBUROS, CROMATOGRAFÍA, GOLFO DE NICOYA (COSTA RICA), ANADARA