Figure 1
From: Compromised Air Quality and Healthcare Safety from Smoking inside Hospitals in Shantou, China
Representative graphs showing a mobile air survey of PM2.5 (A) and a stationary air survey of PM2.5 (B). (A) An air survey (two rounds per day in the same locations) is shown inside three hospital buildings (outside clinical wards) in hospital (E), with PM2.5 readings outside the hospital (environmental background reading) as gaps between the buildings. (B) An 11-day stationary air survey of PM2.5 in the doctor office, the nurse station, and a multi-patient room inside one clinical ward in hospital (D), where a PM2.5 monitor Dylos was placed for at least three days each in the same location for continuous measurements. Transient surges of PM2.5 concentration above the China Air Quality Standard (CN-AQS) are shown as PM2.5 spikes, with the WHO air quality guideline (WHO-AQG) as the international reference standard. The levels of health concern due to PM2.5 concentration was taken after the United States Environmental Protection Agency. See methods for the description of the mobile survey.
