In June 2017, Civic Exchange published a report on “Monitoring Personal Exposure to PM2.5 in Hong Kong with Next Generation Sensors.” To download the report, click on the above PDF icon.
- Our volunteers’ PM2.5 exposure were generally much higher than readings by the nearest government air monitoring station. Hong Kong may be significantly underestimating its residents’ true pollution exposure risk.
- Our volunteers’ PM2.5 exposure during commuting exceeded limits set by the World Health Organization (WHO). However, they fell within Hong Kong’s own Air Quality Objectives, which are more less stringent.
- Time at home made up about half of the volunteers’ time over a 24-hour period, and reached 81% during weekends. In total, the volunteers in this study spent more than 85% of their time indoors – including at home, at work, and other indoor environments.
- PM2.5 exposure at home was significantly higher than in the office, and even slightly higher than on transportation.
- Pedestrians, in particular, were consistently exposed to about double the WHO’s recommended limit of PM2.5 exposure.
- The Government should inform the public on pollution management in households, given the high level of PM2.5. In May 2017, the Environmental Protection Bureau launched a series of Cantonese, Putonghua and English videos on the issue, which Civic Exchange welcomes as a good first step.
- Hong Kong’s official Air Quality Objectives should be tightened to meet WHO standards.
- More studies should be conducted on individual pollutant exposure, using a much larger and more varied body of volunteers than this initial pilot study.
- New generation sensors should be developed into something smaller, lighter, and capable of providing real-time or personalized data to the individual.
- RTHK – HK pollution much worse than govt data, says study (08 June 2017)
- Apple Daily – 調查指屋企空氣污染比公司高兩倍 最大元兇係邊個？ (08 June 2017)
- InMedia – 新感應器測空氣污染 PM2.5超出世衛標準2倍 (08 June 2017)
- TheNewsLens – 新研究收集香港空氣污染讀數遠高官方 家居PM 2.5勁過辦公室甚至交通工具 (08 June 2017)
- Hong Kong Free Press – Gov’t significantly underestimates Hongkongers’ exposure to pollution, says think tank (09 June 2017)
- Oriental Daily – 港人每日暴露PM2.5 超世衞標準逾倍 (09 June 2017)
- RTHK Radio 3 – People suffering more from poor air than official data suggests (09 June 2017)
- South China Morning Post – There’s no escape from Hong Kong’s choking air even in your home, study reveals (09 June 2017)
- AM730 – PM2.5與室外僅相差1.5微克 室內空氣污染程度高 (09 June 2017)
- The Standard – Survey shows city more polluted than official data suggests (09 June 2017)
- Ming Pao – 研究﹕隨身錄PM2.5 濃度超政府數據 (09 June 2017)
- HKET – 空氣健康指數不反映室內情況 煮食吸煙增加室內PM2.5 (09 June 2017)
- Sky Post – 家居懸浮粒子 恐比交通工具高 (09 June 2017)
- HK01 – 【宅是最好？】家居空氣污染隨時比辦公室、車廂嚴重？(09 June 2017)
- Harbour Times – Do not underestimate indoor pollution exposure, think tank warns (12 June 2017)