Posts Tagged ‘air quality’

Breathing Easier? New Stricter Air Pollution Standards for Beijing

Thursday, January 12th, 2012 by

In response to international criticism, with much of it coming from the United States, the Chinese government announced on Friday that it would initiate stricter air pollution standards for Beijing by the end of the month.  Residents of Beijing, foreigners and natives alike, have long complained that the Chinese government routinely understates the severity of the problem, with many relying on the United States embassy’s official figures instead. 

Under the more “U.S. like” standards, Beijing officials will begin reporting on the level of tiny floating particles — 2.5 micrometers in diameter or less, known as PM 2.5 — that doctors warn can more easily settle in the lungs and cause respiratory problems and other illnesses.  As we reported earlier, China has only reported on the levels of much larger particles—10 micrometers or more. 

Liu Xianshu, the director of the city’s equivalent of the Environmental Protection Agency, said that they would start reporting the readings of the PM 2.5 at the start of the Chinese New Year, which falls on January 23rd.  This appears to be a reversal from a statement last month made by Environment Minister Zhou Shengxian that the government agency would not begin using stricter standards until 2016. 

HTH Worldwide, sponsor of Healthy Travel Blog, processes dozens of allergy and respiratory related claims from travelers to Beijing, many of whom had no prior history of either type of illness.  Ear, nose and throat specialists in Beijing appear to do a very brisk business removing nasal polyps and expanding sinus cavities of those afflicted with conditions aggravated by heavy pollutants, while pulmonologists are quite busy taking care of asthmatics and those with chronic lung disease who struggle with frequent exacerbations.  HTH consultants in China routinely advise those with severe seasonal allergies and lung conditions to have adequate medications for their trip to Beijing.

Photo by egorgrebnev.

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Travel Bulletin Beijing: Air Quality “Crazy Bad”

Friday, November 19th, 2010 by

The air quality index in Beijing has soared over 500 as measured on instruments in the U.S. embassy, prompting staff to issue an alert today calling air quality “crazy bad.” The Chinese government’s official air quality reading was 312 because it measures large particulates only and ignores the tiny and dangerous dust particles that U.S. readings capture. Readings over 240 on U.S. instruments typically result in the cancellation and curtailment of outdoor activities.

Beijing’s poor air quality continues to erode with the onset of winter and increased coal burning by residents and businesses. At the same time, automobile traffic is increasing relentlessly with an estimated 1,200 new cars hitting the roads each day.

Diplomatic relations with China have pressured the U.S. embassy into calling today’s candid air quality assessment “incorrect” and promising to use revised language in any future alerts. Let’s hope they continue to publish the numbers no matter what adjectives they choose.

Photo by Andy Oakley.

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Airline Air – five tips for breathing easier

Thursday, July 30th, 2009 by

crowdedplaneYesterday, the Wall Street Journal posted about cabin fume events – how problems during a flight can cause real air quality issues for the crew and passengers.  Hopefully, these events are rare and that raising the red flag in the press will help the airlines improve things so that they become rarer still.

However, even on flights without specific problems, there are air quality issues and steps one can take to minimize the effects of these.

 Why is the air so bad?

  • Airline cabin air is recycled. Older aircraft tend to filter air and mix in part fresh air before recirculating it in the cabin. Newer aircraft tend to use almost all recirculated air. Often when the plane is on the ground the recirculation and filtering systems aren’t completely functional so the air may be of even worse quality than when you’re in flight.
  • Airline cabin air is extremely low in humidity. Such air can dry the mucous membranes of your nose, mouth, throat and bronchial tree (or breathing tubes), which are then less able to keep out viruses and bacteria. Your eyes may become dry and uncomfortable as well.
  • Airline cabin air is low in oxygen relative to fresh air on the ground. Healthy individuals shouldn’t notice any difference but those with chronic lung conditions might.
  • High altitude flights draw in air that contains high levels of ozone. Most  big airliners that fly longer routes are equipped with ozone converters that decompose this air, but this may not be the case with planes designed for shorter flights.
  • While airplane filtration systems are pretty good at eliminating more serious pathogens like Tuberculosis (TB) from cabin air, the proximity of your fellow passengers can increase your risk of getting a respiratory infection–a miserable, business trip-spoiling cold.

 What can I do?

  • Choose a seat in the middle of the plane.  As the air circulates across the rows and not up and down the plane, some experts believe the worst air is in the front or the back of the plane.
  • Stay well hydrated by drinking lots of fluids (water or fruit juice) and avoiding caffeine and alcohol, which will dehydrate you. In my experience most flight attendants will gladly provide you a bottle of water even during the boarding process.
  • If you wear contact lenses, take them out before you fly–or have your lens case handy in case you need to take them out in-flight.
  • If your row-mate has chosen to fly with a raging cold and is sneezing and coughing near you, ask to be reseated. Cover your nose and mouth when he or she sneezes.
  • Wash your hands. Many respiratory viruses are transmitted through hand to face contact. In addition to keeping your hands clean, don’t touch your mouth, nose or eyes with dirty fingers.
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