Use of pasive samplers to determine nitrogen dioxide en two municipalities in the metropolitan area of Costa Rica in 2004-2013

The performance of passive devices were evaluated for the determination of nitrogen dioxide in 25 sites of San Jose and Belen, for which first, the method parameters such as limit of detection and quantification were determined and the bias and precision results were satisfactory. At least five site...

Full description

Saved in:
Bibliographic Details
Published in:Ambientales 2014-12
Main Authors: Herrera, Jorge, Rodríguez, Susana, Herrera, Ericka, Rojas, José F, Beita, Víctor H, Solórzano, David
Format: Article
Language:Spanish
Subjects:
air pollution
contaminación atmosférica
contaminación urbana
Dióxido de nitrógeno
metropolitan area of Costa Rica
muestreo pasivo
Nitrogen dioxide
passive sampling
urban pollution
área metropolitana de Costa Rica
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The performance of passive devices were evaluated for the determination of nitrogen dioxide in 25 sites of San Jose and Belen, for which first, the method parameters such as limit of detection and quantification were determined and the bias and precision results were satisfactory. At least five sites in San Jose and four in Belen have values greater than 40 ug / m3, which corresponds to that recommended by the World Health Organization criteria for this contaminant. The highest concentrations are presented for commercial sites with high traffic flow where exceedances can reach up to 45%. If these values are compared with those obtained for previous years a growth rate of 11 and 13% for commercial and industrial sites recorded respectively. Se evaluó el desempeño de los dispositivos pasivos para la determinación de dióxido de nitrógeno en 25 sitios de los cantones de San José y Belén, para lo que, primeramente, se determinó los parámetros de desempeño del método: límite de detección y cuantificación, sesgo y precisión, obteniendo resultados satisfactorios. Al menos cinco sitios en San José y cuatro en Belén presentan valores mayores a 40 µg/m3, que corresponde al criterio recomendado por la Organización Mundial de la Salud para este contaminante. Las concentraciones mayores se presentan en sitios comerciales con alto flujo vehicular donde llegan a alcanzar excedencias de hasta un 45%. Si se compara estos valores con los obtenidos en años anteriores, se registra una tasa de incremento de 11 y 13% en sitios comerciales e industriales, respectivamente.
ISSN:1409-2158
2215-3896