Xi’an limit line 4 vehicles less emissions of about 590 tons-pretty rhythm

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Xi’an restricted 4 vehicles less emissions of about 590 tons, in accordance with the "Xi’an heavy pollution weather contingency plan" requirements, since 15 this month, 6 o’clock, Xi’an launched the motor vehicle limit line 20% emergency response measures. On 15 – 18 on vehicle emissions data for 4 consecutive days of motor vehicle, four major pollutants emissions than the limit before the decline of about 17.5%. The reporter learned from Xi’an Municipal Environmental Protection Bureau, as of the end of October this year, Xi’an vehicle fleet of about 2 million 550 thousand vehicles. According to the emission standards, there are about 320 thousand vehicles under the country III (excluding), and about 2 million 80 thousand cars are discharged from country III or above. According to the calculation, the annual total emissions of four major pollutants in motor vehicles in Xi’an are about 320 thousand tons. The total amount of major pollutants emitted by automobiles is about 310 thousand tons, including 245 thousand tons of carbon monoxide (CO), 25 thousand tons of hydrocarbons (HC), 38 thousand tons of nitrogen oxides (NOX), and 2 thousand tons of fine particulate matter (PM). According to the analysis of the sources of atmospheric particulates in 2015, the contribution of vehicle exhaust to PM2.5 in Xi’an is about 21.4%. According to the national motor vehicle emission measurement model calculation, 18 days after the tail number is 3 and 8 of the vehicle to take line measures, the vehicle emissions of four major pollutants reduced by about 148 tons per day. Among them, carbon monoxide (CO) is about 116 tons, hydrocarbon (HC) is about 12 tons, nitrogen oxide (NOX) is about 19 tons, and fine particulate matter (PM) is about 1 tons. Therefore, during the 15 – 18 days limit period, Xi’an motor vehicle emission reduction of all kinds of pollutants about 590 tons. Reporter Wen man

西安限行4日机动车少排放污染物约590吨按照《西安市重污染天气应急预案》的要求,自本月15日6时起,西安市启动了机动车限行20%的应急响应措施。通过对15日—18日连续4天的机动车污染物排放数据分析,机动车四项主要污染物排放量较限行前下降约17.5%。 记者从西安市环保局了解到,截至今年10月底,西安市机动车保有量约255万辆。按排放标准划分,国Ⅲ(不含)以下汽车约32万辆,国Ⅲ及以上排放标准汽车约208万辆。 据测算,西安市机动车四项主要污染物年排放总量约32万吨。汽车排放的主要污染物总量约31万吨,其中一氧化碳(CO)24.5万吨,碳氢化合物(HC)2.5万吨,氮氧化物(NOX)3.8万吨,细颗粒物(PM)0.2万吨。据2015年我市大气颗粒物来源解析结果表明,机动车尾气对西安市PM2.5的贡献约为21.4%。 按照国家机动车污染物排放测算模型测算,18日对尾号为3和8的机动车采取限行措施后,机动车四项主要污染物每天排放量减少约148吨。其中:一氧化碳(CO)约116吨,碳氢化合物(HC)约12吨,氮氧化物(NOX)约19吨,细颗粒物(PM)约1吨。由此测算,15日—18日限行期间,西安市机动车污染物排放减少各类污染物约590吨。本报记者文锦相关的主题文章:

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