【摘要】 在海拔２ ２８８５ ｍ 的甘肃七道梁高海拔公路隧道内设监测点，对进入隧道内机动车排出的污染物浓度、交通量、车种以及气象条件进行采样分析、计数、分类和观测。根据在隧道内实测数据，用大气扩散方程计算出中国高海拔山岭公路机动车单车 Ｃ Ｏ、 Ｈ Ｃ 和 Ｎ Ｏｘ 排放系数分别为 ４１８６１±２６１０１、５３６７±３１５８ 和３８８３±１９４３ ｇ／（ｋｍ ．ｖｅｈ）。更多还原

【Abstract】 The measurements of the concentrations of the pollutants from the vehicles inside the Qidaoliang road tunnel at 2 288.5 m elevation above sea level,the observations of meteorological conditions in the tunnel and the counting and classification of vehicles passing through the tunnel were conducted.The emission coefficients of CO,HC and  NO x from vehicles on mountain roadway at higher elevation above sea level in China were 41 861±26 101, 5 367±3 158 and 3 883±1 943g/(km.veh),respectively,which were derived from the model of atmospheric diffusion based on the measured data.更多还原