春节长假刚过，京津冀部分地区雾霾天气卷土重来，再次引发了人们的担忧。中科院“大气灰霾追因与控制”专项组研究认为，机动车、燃煤等人为污染排放是造成雾霾天气的“主谋”。

Just after the Spring Festival holiday,Parts of beijing-tianjin-hebei fog haze weather stage a comeback,Again raised concerns.Chinese academy of sciences"Atmospheric gray haze chase for and control"The special group of research thought,Motor vehicle/Coal such as pollution discharge is a fog haze weather"counselor".

　　这个专项组通过中科院分布在京津冀区域的15个P M2 .5监测站对今年1月份京津冀地区的5次强霾污染进行了监测分析。专家认为，雾霾是异常天气形势造成中东部大气稳定、人为污染排放、浮尘和丰富水汽共同作用的结果。

This special group through the distribution of Chinese academy of sciences in beijing-tianjin-hebei region 15 P M2. 5 stations in January this year of the beijing-tianjin-hebei region 5 times the strong haze pollution monitoring analysis.Experts say,Fog haze is caused by abnormal weather situation designates the atmospheric stability/Man-made pollution emissions/Dust and abundant water vapor the result of joint action.

　　研究发现，每当污染发生时，细小颗粒物中的有 机 物 、 硫 酸 盐 、 硝 酸 盐 和 铵 盐 的 浓 度 大 幅 度 提高，特别是有机物。这些有机物被识别出4类：氧化型有机颗粒物，主要来自于北京周边输送；油烟型有机物，主要来自局地烹饪源排放；氮富集物，一种光化学产物；烃类有机颗粒物，主要来自于汽车尾气和燃煤。

The study found that,Whenever pollution occurs,Small particles of machine content / Sulfur acid salt / Nitric acid salt and ammonium salt concentration degree big picture degree increase,Especially the organic.These organic matter was identified four types:Oxidation type organic particles,Mainly comes from the surrounding Beijing delivery;Lampblack type organic matter,Mainly from local cooking source emission;Nitrogen richment,A photochemical products;Hydrocarbon organic particles,Mainly comes from the car tail gas and coal.

　　“大量含氮有机颗粒物被检出是一个危险的信号，它们是上世纪美国光化学烟雾事件污染物的主要成分之一。”中科院大气物理研究所研究员王跃思说。

"A large number of nitrogenous organic particles was detection is a dangerous signal,They are the last century the photochemical smog event is one of the major components of pollutants."Chinese academy of sciences researcher at the institute of atmospheric physics WangYueSi said.

　　专 家 认 为 ，1月 份 我 国 中 东 部 地 区 发 生 的 强霾污染物化学组成，是英国伦敦1952年烟雾事件和上世纪40至50年代美国洛杉矶光化学烟雾事件 污 染 物 的 混 合 体 ， 并 叠 加 了 我 国 特 色 的 沙 尘 气溶胶。

Experts recognize for ,1 month of my kingdom to the east area of hair raw strong haze pollutants chemical composition,Is the British London 1952 smoke events and the last century s forty to Los Angeles photochemical smog pollution event dyed material mixed together body , And fold and my kingdom's color sand dust aerosol.

　　“就北京而言，机动车为城市P M2 .5的最大来源，约为1/4。其次为燃煤和外来输送，各占1/5。油气挥发和局地烹饪排放近年来有快速上升趋势，应加紧控制，工业和地面扬尘应进一步改善。”王跃思说。　　　　　　　　　(吴晶晶)

"In Beijing,Motor vehicle for city P M2. 5 the biggest source,About a quarter.Followed by coal and foreign transport,The 1/5.Oil and gas volatile and local cooking emissions in recent years have fast rising trend,Should intensify control,Industrial and ground dust should further improve."WangYueSi said.(WuJingJing)