1月30日，北京市环保局原副局长杜少中建议，重污染天气下交警应该戴口罩，保护自己提醒公众。他的倡议得到了很多人支持。不过专家则认为，重污染天气戴口罩、靠食疗都难以抵挡PM2.5的污染。

On January 30,The Beijing environmental protection bureau deputy director du Suggestions,Heavy pollution weather traffic police should wear a face mask,Protect yourself to remind the public.His initiative to get a lot of support.But experts say,Heavy pollution weather wear a face mask/By diet are hard to resist PM2.5 pollution.

　　北京市环保局原副局长杜少中1月30日在网络上发言，表示支持重污染天气下，户外工作较多的交警要戴上口罩。“一是保护自己，二是警示公众，三是展示区域重污染的标志。”

The Beijing environmental protection bureau deputy director du January 30, speak on the Internet,Voiced support for the heavy pollution weather,Outdoor work more traffic police to wear the mask."One is to protect themselves,The second is warning the public,Three is to show signs of heavy pollution area."

　　今年1月以来淘宝等购物网站数据显示：广东虽然污染不严重，但购买口罩的成交金额在全国排行第三，排在北京、上海之后。

Since January this year, such as taobao shopping website data display:Guangdong although pollution is not serious,But buying mask clinch a deal amount in the national ranking the third,Row in Beijing/After the Shanghai.

　　记者近日走访广州多家药店了解到，目前广州的市场上还没有专门过滤PM 2.5的口罩销售。

Recently, reporters visited guangzhou several pharmacy to know,Now the guangzhou market haven't special filter PM 2.5 mask sales.

　　那么口罩能否抵挡PM2.5呢？广东省气象局首席气象专家吴兑表示，戴七层以上口罩对PM2.5有一定的防护作用，比如手术室级别的N95口罩。不过这类口罩呼吸阻力大，老人、小孩使用的话对身体伤害大，吴兑建议最好不要使用如此呼吸阻力大的口罩，在空气污染严重时公众最好的防护措施是尽量待在室内。

So mask can resist PM2.5??Guangdong province meteorological bureau chief meteorologists WuDui said,With more than seven layer mask to PM2.5 has certain protective effect,Such as the operating room level N95 respirator.But this kind of mask respiratory resistance big,The old man/The children use words to body harm big,WuDui advice had better not use such respiratory resistance big mask,In the air pollution is serious, the best protective measures is to stay indoors.

　　吴兑表示市场上的PM2.5口罩多数是仿医疗口罩，效果还没得到验证。目前市面上所售的大部分声称能够抵挡PM2.5的口罩，其实都只是噱头，这些口罩存在鱼龙混杂、质量掺假的现象。

WuDui said market PM2.5 mask majority is imitation medical mask,The effect still not verified.At present on market sell most claims to be able to withstand PM2.5 mask,Actually all just gimmicks,These masks exist good and evil people mixed up/The phenomenon of adulterate the quality.

　　灰霾天气也让一些所谓清肺食谱走红，一些社会健康机构、营养品牌宣称：猪红、黑木耳、雪梨、百合等，可清除掉进入肺部的PM2.5，缓解重污染天气下频发的咳嗽和一些肺部炎症。但北京大学公共卫生学院教授潘小川表示，细颗粒物PM2.5是一种由多种化学物质组成的混合物，可以深入人体的肺泡，沉积下来，一般来说网上流传的各种食疗对人体防护PM2.5作用不大。

Gray haze weather also let some so-called clear lung's diet,Some social health institutions/Nutrition brand that:Pig red/Jew 's-ear/Sydney/Such as lily,Can remove into the lungs of PM2.5,Relieve heavy pollution weather frequent cough and some lung inflammation.But Beijing university professor with the school of public health PanXiaoChuan said,Fine particles PM2.5 is a kind of by a variety of chemical composition of the mixture,Can further human alveolar,Deposit down,Generally speaking online spread of all kinds of food therapy to the human body protection PM2.5 effect is not big.

　　广东一家大型医院呼吸科孙医生也告诉记者：“所谓的老中医食谱，靠吃猪红排除PM2.5，很不靠谱，很不科学。”（记者 杨辉）

Guangdong a large hospital respiratory medicine sun doctor told reporters:"The old doctor of traditional Chinese medicine recipes,By eating pig red eliminate PM2.5,Very by spectrum,Is not scientific."(Reporter Yang hui)