近期，雾霾天气笼罩了全国大部分城市。石家庄、邯郸、保定、北京、长春等地空气污染严重，多地空气质量指数监测数据“爆表”。北京大学公共卫生学院教授潘小川今日做客人民微博微访谈，就PM2.5的知识以及个人如何在雾霾天气做好防护与网友积极互动。

recent,Fog haze weather over the national majority of cities.shijiazhuang/handan/baoding/Beijing/Changchun, air pollution is serious,More air quality index monitoring data"Detonation table".Beijing university professor with the school of public health PanXiaoChuan today's people's micro bo micro interview,Is the knowledge of PM2.5 and individual how in fog haze weather do protection and net friend positive interaction.

　　针对网友提问最近雾霾天气普遍的原因时，潘教授回答说：“主要原因是天气条件因素。低温、无风、湿度大，使得大气污染物不易扩散，在低层大气中不断蓄积，浓度增加所致；另外近期气温极低，各地为应对供暖平衡明显增加了相关的燃料燃烧量，污染排放总量明显增加，累积到这种天气出现时，共同作用下爆发了。”而谈及对人体可能的健康危害时，潘教授指出：“北京前几天的雾霾天气，属于重度污染，PM2.5的浓度很高，对敏感人群可能会产生比较严重的危害。根据我们的研究结果，这种情况下死亡率会增加大约10%。但这是统计学预测结果，也看具体人群的接触情况。只要不去室外长时间，实际危害不会很大。”

According to the net friend questions recently fog haze weather common cause,Professor pan said:"The main reason is the weather condition factors.Low temperature/calm/High humidity,That is not easy to atmospheric pollutants diffusion,In the lower atmosphere continuously accumulation,Concentration caused by the increase;Another recent very low temperature,To cope with heating balance all increased significantly related to the amount of fuel combustion,Pollution emission increased significantly,Cumulative to this kind of weather appear,Under the joint action of the outbreak."And people may be able to talk about when the health hazard,Professor pan pointed out that:"Beijing a few days ago the fog haze weather,Belongs to the severe pollution,High concentrations of PM2.5,To sensitive crowd may produce serious harm.According to our research results,This case mortality rate will be increased by 10%.But this is statistics forecast results,Also see the specific situation of the contact.As long as it doesn't go to the office time foreign minister,The actual harm not very big."

　　网友提问最多的便是戴口罩的作用以及购买何种口罩类型。而潘教授却指出：“一般人短时间外出戴口罩的意义不大。”他解释称：“一般短时间接触，不会对健康有危害。我们现在说的重污染健康危害，是指连续24小时在这种污染水平下活动时人群总体上可能产生的健康危害。但实际上人群中并不是所有人都连续24小时在外面活动吧？所以实际上产生的健康危害并没有预计的那样严重。不必过分恐慌。”

Net friend ask the most is the role of wearing a mask and buy what mask type.But professor pan is pointed out:"The average person short time go out wearing a mask significance is not big."He explained says:"General short time contact,Not the health hazard.We now say heavy pollution health hazard,Refers to the continuous 24 hours in this pollution level activities under the overall possible health hazards.But the fact is that the crowd not all 24 hours outside activities it?So in fact produce health hazards and not expected serious.Don't panic."

　　网友同时关心食疗方法对于缓解污染危害的作用，潘教授指出：“一般来说，食疗对PM2.5作用不大，专门研究没有意义。”同时，潘教授也建议广大市民应该多乘坐公共交通，少开私家车，在家中可以使用空气净化器。(记者 姚茜)

Net friend also care dietotherapy method to alleviate pollution hazard role,Professor pan pointed out that:"Generally speaking,Diet to PM2.5 effect is not big,Specialized research has no meaning."At the same time,Professor pan also suggested that the general public should be more on public transportation,Private cars less,In the home can use air purifier.(Reporter YaoQian)