Research Article
Changes in Indoor Air Quality in Public Facilities before and after the Enactment of Taiwan’s Indoor Air Quality Management Act
Table 1
Exposure scenarios for the general public and staff workers.
| | Location | Hours
(day) | Days
(week) | Weeks
(month) | Months
(year) | Exposure frequency#1
(EF, day/year) | Exposure duration
(ED, year) | Averaging time#2
(AT, day) |
| | General public | | School | 6 | 4 | 4 | 9 | 36.00 | 10 | 29141.6 | | Library | 6 | 3 | 2 | 3 | 4.50 | 12 | 29141.6 | | Preschool | 8 | 5 | 4 | 9 | 60.00 | 5 | 29141.6 | | Hospital | 4 | The average frequency of outpatient visits was 15.22/person/year in 2014 | 2.54 | 79.84 | 29141.6 | | Social welfare institution | 2 | 1 | 4 | 12 | 4.00 | 79.84 | 29141.6 | | Government office | 0.5 | 1 | 1 | 12 | 0.25 | 79.84 | 29141.6 | | Public transport system | 0.5 | 6 | 4 | 12 | 6.00 | 79.84 | 29141.6 | | Exhibition room | 4 | 10 days/year | 1.67 | 79.84 | 29141.6 | | Department store/shopping center | 3 | 1 | 4 | 12 | 6.00 | 79.84 | 29141.6 | | Staff workers | | School | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 | | Library | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 | | Preschool | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 | | Hospital | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 | | Social welfare institution | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 | | Government office | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 | | Public transport system | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 | | Exhibition room | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 | | Department store/shopping center | 8 | 5 | 4 | 12 | 80.00 | 35 | 29141.6 |
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#1Exposure frequency (day/year) = (h/day) × (day/week) × (week/month) × (month/year) × (day/24h). #2Averaging time (day) = 79.84 years × 365 days/year = 29141.6 days.
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