Guard against toxic fog haze

"Should remind readers look at the issues and haze visibility days, over the past few years, with the industrial development, air pollution is more and more serious, and haze visibility days more and more, the physical damage and more serious!"

This is the Chinese society of Psychosomatic Medicine Branch Chairman, Shanghai University of traditional Chinese tutor Professor José yumin stressed with my meals. According to authoritative information and statistics, the number of smokers in China did not increase, but the lung cancer patients in the past 30 years has increased the 45.6%, this is the absolute air pollution. Zhong Nanshan, academician, and haze visibility weather-induced lung cancer rates than nicotine!

And haze visibility day also called haze days, now increasingly appear in media view.

According to the Hunan journal 2009 year-end report, "Hunan and haze visibility weather has continued for six days. Starting from 9 may, subject to the influence of weak cold air North, Zhangjiajie, changde, Yueyang, Changsha, loudi, Hunan Hengyang, etc in the mist-shrouded in the North, the South daoxian, relative humidity, such as linwu small, dark diffuse; 10, early 8 points, the province's large parts of Central and Eastern eg light mist; 11 September, the province's mist extends maximum range, Twilight, around the province. ”

In the past, people are aware of the "fog" Chongqing, now just what "fog", Chongqing, Fujian, Guangdong, Zhejiang, Shanghai, Jiangsu, Beijing ...

Provinces in almost all different levels, continuing this and haze visibility day. In the Guangzhou Pearl River Delta, across the Tropic of cancer, has a pleasant subtropical climate, looks always green and flowers. The geography described in the book "warm and rainy, lighting, summer is long and the short" City area, today many people say that Guangzhou only two weather-sunny and grey days. Grey day, is haze days. "Haze", has been very concerned about the wording. A few years ago, "haze," the new words began to appear in Guangzhou, now, people are already familiar with. Pollution to a certain extent, there will still be high in the sky brown clouds appear. It is understood that each person every day about the air inhaled 15 cubic meters, in a big city, we daily and the air in this killer touch, pulmonary secretly in a "vacuum cleaner". Over the years, TV and newspapers, doctors and health professionals often issued to remind people of good intentions, warned them in haze in notes, you need to understand the protection knowledge. Doctors warn that live in haze, you may receive the suffocating, cough, dizziness, weakness, sleepy, sick, sick, irritability, and other adverse reactions, so minimize the out of Office.

So, what exactly is and haze visibility? how to produce it?

Haze of ancient has, the hero of "says:" the wind and rain, the soil, haze "flying dust rain and fog and other dirt created the ancient meaning of haze.

Today, our eyes in the morning, and space is often a gray, visibility is not high, the air sometimes there is a smell. This is the fog? is not, in the city, our eyes can see haze fog and haze visibility, and most likely are.

According to experts, haze is essentially "fine particle pollution", mainly from industrial emissions, vehicle exhaust and other gaseous pollutants photochemical reaction after a series of "secondary pollutants".

The spread of dust in the air, sulfuric acid, nitric acid, organic hydrocarbons and other particles that atmospheric opacity, vision blurred, visibility and the visibility poor, if level is less than 10000 m, a non-aqueous extracts of aerosol systems vision disorders is called haze or haze, the Hong Kong Observatory said haze. Haze and fog difference occurs when relative humidity not haze and fog of relative humidity is saturated (if there is a large number of condensation nuclei, the relative humidity is not necessarily up to 100% saturation can occur).

Average relative humidity is less than 80% of atmospheric turbidity vision blurred visibility deterioration caused is haze, relative humidity greater than 90% of atmospheric haze with visibility of fuzzy vision led to the deterioration is due to the fog, the relative humidity is between 80% to 90% of atmospheric turbidity vision blurred visibility deterioration result is a mixture of haze and fog is common, but its main compositions is a haze.

Comparison of thick haze of thickness, up to 1 ~ 3 km. Haze and fog, clouds, and sky district boundaries between has no clear, haze particles distribution between uniform, and the scale of the haze particles, from relatively small to 10 micron 0.001 microns, mean diameter of about 1 ~ 2 microns, invisible air rides of particulate matter. Due to dust, sulfuric acid, nitric acid, and other particles of the haze, the scattering of light wavelengths longer, thus more haze seems to to blinking yellow or orange grey.

"A large number of extremely fine dust particles, such as dried evenly phytoplankton in the air, so that the horizontal visibility is less than 10 km of the atmosphere generally cloudy phenomenon, the distant light of microstrip yellow, red, dark blue" of micro-Strip, which is operated by the ground meteorological observations range "in the definition of that haze.

"Visibility is less than 10 km of the haze, 5 ~ 8 km belongs to moderate haze, 3 ~ 5 km belongs to the phenomenon of severe haze, less than 3 km are serious haze phenomenon" — this is the meteorologists to grant this representation of the haze.

"Haze" fog killer knife ".

This set of data sufficient to shocking — China every year because of urban air pollution caused by respiratory clinic cases more than 35 million people, 680 million in emergency cases, and is increasing rapidly. Atmospheric pollution caused by the environment and health losses accounted for 7% of China's GDP. In 2004, due to air pollution in urban China, killing nearly 35.8 million deaths. Weather scientists confirmed NG stated: haze of lung cancer shadow, a year after the haze in serious, at seven years with most lung cancer can occur. Haze and lung cancer have had "seven year itch". So, people say, people sometimes feel and haze visibility is not, gentle killers, strong toxicity.

It was so terrible, and haze visibility should not be taken lightly! recently, my many regions put haze weather into the fog as severe weather alerts, forecasts, collectively referred to as "weather" and haze visibility.

Experts advise people, winter and spring is in the East and haze visibility and haze visibility of multiple season, weather, like morning exercise should avoid outdoor activities, otherwise, the more the movement, the lungs of poison more virtually become toxic fog of vacuum cleaners.

If you travel, it is best to wear face masks, shawl. Resistance to weak children should stay indoors as much as possible, prevent suffering from respiratory diseases. This time should also be less fenestration, because indoor air outdoor clean. General and haze visibility weather and temperature will increase, should promptly added clothes, precautionary measures. The weather may also be induced hypertension, stroke, and other diseases. Sustained and haze visibility day also makes the heart and lung disease patients symptoms worse, even in critical condition, to timely medical treatment. Healthy people uncomfortable symptoms also occur, go back to cleaning facial and bare skin. Drink plenty of water, eat fresh, rich in vitamin fruit to prevent moisture loss, once found physical discomfort, should immediately to hospital for treatment.

Personal protection is concerned, we can only achieve these.

And radical approach is to control air pollution, reduce carbon emissions. With the strengthening of governance, urban environment that is believed to become better and better, and haze visibility days may be gradually reduced.

(Edit: pan message attachment point)