(The following is from guest contributor Chris Buckley) The air quality index from the US Embassy (AQI) that many of us are familiar with is based on particles suspended in the air (PM2.5, meaning particles smaller than 2.5 microns). Now the Embassy has added a second AQI for ozone to the particle measurement. The new …
Chris Buckley
 Using the Beijing Air Quality Index (AQI) – Part I(The following is a second post from a new contributor, Chris Buckley of Torana Clean Air) Many of us rely on the Air Quality Index (AQI) supplied by the US Embassy as a guide to pollution levels in the capital. In this, the first in an occasional series of posts on this topic, I will … |
 Ultrasonic Humidifiers in Beijing – An Unnecessary Risk?(The following is a guest piece from Chris Buckley, owner of Torana Clean Air Center in Beijing) Recently, I’ve been doing measurements inside and outside of homes in Beijing, looking at fine particle air pollution, of the same size range (less than 2.5 microns) that is monitored by the US Embassy. Most homes have indoor … |
