Passive sampling as a feasible tool for mapping and model evaluation of the spatial distribution of nitrogen oxides in the city of Curitiba, Brazil

摘要: Nitrogen oxides (NOx) are important pollutants that affect air quality in urban areas and associated with harmful effects human health. These compounds emitted by combustion process especially vehicles. The main aim of this paper is to assess the concentrations NOx atmosphere Curitiba using Ogawa samplers dispersion models. determination 11 places was performed a simple colorimetric reaction spectrophotometry. A comparison between reference chemiluminescence analyzer showed good agreement repeatability method used. Two-week sampling campaigns were at stations from July 29 August 12, 15 29, 2016. results highest high traffic vehicular street level (121 μg m−3 for NOx, 47.9 NO2, 48 NO) as compared roof can be attributed impact local passing canyon. similarity monitored modeled (17 out 26 pointwise comparisons within ± 25%) gives confidence emission inventory model simulations, allowing conclusion source contributions.