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室內空氣質素, 香港, Hong Kong Air Purifier Center, 香港空氣淨化器中心
Indoor
Air Quality (IAQ) Measurement
室內空氣質素測試
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Indoor
Air Quality Measurement
As
an IAQ solution provider, Hong Kong Air Purifier Center
provide measurement of IAQ parameters and help customer to
apply IAQ Certificate according to
Environmental Protection Department (EPD)’s Guidance Note in
Hong Kong. We also provide FREE recommendation for customer to
improve the IAQ level in her area.
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Cause
of indoor air pollution
The
primary cause of indoor air pollution is the emission of
polluting gases or particles indoors.The poor outdoor air
quality also brings in air pollutants and odour into the
ventilation system of the building. Inadequate ventilation can
increase indoor air pollutant levels by not bringing in enough
fresh air to dilute the pollutants and carrying them away.
High temperature and humidity levels can also increase
concentrations of some indoor air pollutants, such as
formaldehyde or bacteria.
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Common
indoor air pollutants found in air-conditioned buildings
Common
indoor air pollutants found in air-conditioned buildings
include carbon dioxide, respirable suspended particulate,
formaldehyde, total volatile organic compounds and airborne
bacteria. The level of some combustion products like carbon
monoxide and nitrogen dioxide may be high if there is a
carpark close to your premises or burning stoves are used
indoors (e.g. in barbecue restaurants). Elevated level of
nicotine and respirable suspended particulates is not uncommon
when there is smoking activity in the premises. In addition,
the level of ozone may be high if a number of ozone emitting
office equipment like laser printers, photocopiers, fax
machines, are used in office without sufficient ventilation.
For details, please refer to the IAQ leaflet entitled "Indoor
Air Quality and You" published by the
Environmental Protection Department (EPD).
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12
Parameters / 12種之項指標 |
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辦公樓宇及公眾場所的室內空氣質素指標
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參數
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單位
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八小時平均
a
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卓
越 級
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良
好 級
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室內溫度
Room
Temperature
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°
C
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20
至
<
25.5 b
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<
25.5 b
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相對濕度
Relative
Humidity
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%
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40
至
<
70 c
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<
70
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空氣流動速度
Air
movement
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m/s
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<
0.2
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<
0.3
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二氧化碳
(CO2)
Carbon
Dioxide (CO2)
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ppmv
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<
800 d
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<
1,000 e
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一氧化碳
(CO)
Carbon
Monoxide (CO)
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m
g/m3
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<
2,000 f
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<
10,000 g
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ppmv
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<
1.7
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<
8.7
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可吸入懸浮粒子
(PM10)
Respirable
Suspended Particulates (PM10)
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m
g/m3
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<
20 f
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<
180 h
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二氧化氮
(NO2)
Nitrogen
Dioxide (NO2)
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m
g/m3
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<
40 g
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<
150 h
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ppbv
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<
21
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<
80
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臭氧
(O3)
Ozone
(O3)
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m
g/m3
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<
50 f
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<
120 g
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ppbv
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<
25
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<
61
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甲醛
(HCHO)
Formaldehyde
(HCHO)
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m
g/m3
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<
30 f
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<
100 f, g
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ppbv
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<
24
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<
81
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總發揮性有機化合物
(TVOC)
Total
Volatile Organic Compounds (TVOC)
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m
g/m3
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<
200 f
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<
600 f
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ppbv
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<
87
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<
261
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氡氣
(Rn)
Radon
(Rn)
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Bq/m3
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<
150 i
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<
200 f
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空氣中細菌
Airborne
Bacteria
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cfu/m3
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<
500 j, k
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<
1,000 j, k
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Scope
of Work |
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To
identity the measurement location
To
measure the IAQ parameters
To
prepare the measurement report and laboratory report
To
suggest improvement method when the measured result is fail to
comply with the EPD requirement
To
re-measure the related parameters after improvement work has
done.
Assist to contact the third party (CIB) to apply IAQ certificate
[Note: Customers need to engage an HKAS approved "IAQ Certificate Issuing Body" (hereafter referred to as "CIB") themselves.]
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