沿道の大気汚染状況に関する計測(第2報)
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概要
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Time change of NOx concentration has been instantly and simultaneously measured at various points along roadway where traffic volume is huge. The reason why instant values are applied, instead of mean values measured by ""the roadside air pollution monitoring stations"", is that air pollution status is thought to be changing every moment. In this report, measurement results obtained by an improved system from the point of view for response and accuracy, are going to be presented. In addition, NO_2 concentration increase from vehicles with sophisticated after-treatment systems, such as DPF, in the real-world has been focused by several researchers. In this respect, NO_2 emission values are also analyzed and discussed.