Caracterización química - morfológica del PM2,5 en Lima metropolitana mediante microscopía electrónica de barrido (MEB)
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RevActaNova.
Abstract
La cuantificación de las concentraciones de los contaminantes criterio ha comprobado que el problema en la ciudad de Lima radica en las altas concentraciones de material particulado, siendo de mayor interés el material particulado menor de 2,5 micrómetros (PM2,5). Con la finalidad de identificar los elementos químicos del PM2,5, se realizaron dos campañas de muestreo del 13 de abril al 03 de mayo del 2015, se muestreo en Ate y Villa María del Triunfo. Y del 18 de mayo al 07 de junio del 2015 en Puente Piedra y San Juan de Lurigancho, con el equipo Muestreador de bajo volumen, marca Thermo Scientific, modelo Partisol. La caracterización química-morfológica del material particulado se realizó con un microscopio electrónico de barrido de la marca SEMFE QUANTA 200 con un espectrofotómetro EDS acoplado. Los resultados indicaron la presencia de elementos químicos tales como silicio, titanio, aluminio, zinc, cobre, cloruros de sodio, sulfates, etc. que están asociados a tipos de fuentes antropogénicas y de fuentes naturales que caracteriza a cada lugar muestreado.
The quantification of the concentrations of the pollutant criteria has shown that the problem in the city of Lima is the high concentrations of particulate matter, is more interest PM2,5 With the fmality to identify the chemicals elements of PM2,5, we made two sampling campaigns at April 13 to May 3, 2015 in Ate and Villa María del Triunfo, in May 18 to June 7, 2015 in Puente Piedra and San Juan de Lurigancho, with the equipment Low sampler Thermo Scientific, model Partisol. The chemical-morphological characterization of the particulate material was performed with a scanning electrón microscope of the SEMFE QUANTA 200 with ED's spectrophotometer. The results indicated the presence of chemical elements such as silicon, titanium, aluminium, zinc, copper, sodium chlorides, sulphates, etc. Which are associated with types of anthropogenic sources and natural sources that characterize each site sampled.
The quantification of the concentrations of the pollutant criteria has shown that the problem in the city of Lima is the high concentrations of particulate matter, is more interest PM2,5 With the fmality to identify the chemicals elements of PM2,5, we made two sampling campaigns at April 13 to May 3, 2015 in Ate and Villa María del Triunfo, in May 18 to June 7, 2015 in Puente Piedra and San Juan de Lurigancho, with the equipment Low sampler Thermo Scientific, model Partisol. The chemical-morphological characterization of the particulate material was performed with a scanning electrón microscope of the SEMFE QUANTA 200 with ED's spectrophotometer. The results indicated the presence of chemical elements such as silicon, titanium, aluminium, zinc, copper, sodium chlorides, sulphates, etc. Which are associated with types of anthropogenic sources and natural sources that characterize each site sampled.
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Vol. 8, No. 3