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ï»\xBF? Nanjing PM2.5 source apportionment work years, recently has been identified by the expert group of the Ministry of Environmental Protection, after the festival the public will also be based on the analytical results, and detailed schedule of pollution reduction programs can be efficiently controlled Pollution. Refinement, the Nanjing Environmental Protection Agency under the previous investigation and preliminary analysis by the relevant bodies out of Nanjing 'haze culprit', that PM2.5 source apportionment includes four aspects: the first piece of industrial emissions, accounting for 46%; the second block is automobile exhaust pollution, less than 20%; the third block is a construction site and road dust, close to 20%; the fourth block is the area of ​​the input type of pollution, accounting for about 15%. Experts said that such a result is still the industrial and energy structure about Nanjing, Nanjing Power Plant, the number of many steel mills, coal volume. Multiple haze, air pollution reasons, in the end is what? This is lingering in mind we recently mentioned a problem most. In many cases, Nanjing static stability of climatic conditions is the dominant factor, followed by the chemical industry, construction site dust. But this source is confirmed analytical result in fog and haze 'culprit' is the polluting industries, construction sites and other emissions, not just blame the 'God' of the head. PM2.5 source apportionment study started last year, Nanjing environmental protection department official, the real deployment of Nanjing PM2.5 source apportionment in the last year, but has also been some preliminary observations Nanjing study nature. Reporters learned that Nanjing of PM2.5 research started, in fact, in the country earlier. About 2009, located in the state-controlled atmosphere pasture gate stations, initiated the study of PM2.5, which also includes a source resolution. Nanjing source of PM2.5 is clear; but to understand the various sources of specific ratio, it takes time. After years of monitoring summary, PM2.5 sources proportion has finally been published. Nevertheless, compared to western countries, source apportionment in the country is still in its infancy. 'Source Apportionment easier said than done quite complicated.' It is reported that monitoring personnel to collect data on power plants, steel mills, restaurants, farms and other places. After the data back to the lab, first by instrumental analysis, re-use the model to analyze, calculate. To distinguish between the hotel restaurant or western restaurant, Chinese food but also distinguish the local cuisine or other dishes