Air Pollution Index (API) is the conversion of ambient respirable suspended particulates (RSP), sulphur dioxide (SO2), carbon monoxide (CO), ozone (O3) and nitrogen dioxide (NO2) concentration measured at the air quality monitoring network to a scale of 0 to 500. The lower the level, the better quality of air we can breathe. If the index is above 100, there will be an adverse acute health effect to human. The number of days which had a record of API 100 or above keeps increasing these years, which brings many problems to us.
According to the International Monetary Fund, the poor air quality in Hong Kong and around the Pearl River Delta is not only a regional problem, but a global concern that could undermine Hong Kong¡¦s competitiveness. This has been reflected in the difficulties of attracting and retaining high-skilled workers and reluctance of giving birth to children by the Hong Kong citizens.
Source:
Department of Community Medicine, School of Public Health,......
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