IAQ Parameter

室內空氣質素參數

Sources 源頭

8-hr average 八小時平均值

Excellent Class

卓越級

Good Class

良好級

Carbon Dioxide二氧化碳 (CO₂)

  Combustion 燃燒過程

  Respiratory product 呼吸作用

< 800 ppm

< 1,000 ppm

Carbon Monoxide一氧化碳 (CO)

  Combustion燃燒過程

  Smoking 吸煙

  Vehicle exhaust seeping through街外汽車廢氣

< 1.7 ppm

< 8.7 ppm

Respiratory Suspended Particulates 可吸入懸浮粒子 (RSP)

 Combustion 燃燒過程

 Smoking吸煙

  Photocopying 影印

  Vehicle exhaust seeping through 街外汽車廢氣

< 20μg/m³

< 180μg/m³

Nitrogen Dioxide二氧化氮 (NO₂)

 Combustion 燃燒過程

 Smoking吸煙

 Vehicle exhaust seeping through街外汽車廢氣

< 40μg/m³

< 150μg/m³

Ozone臭氧 (O₃)

  Laser printer雷射打印機

 Photocopying 影印機

< 25 ppb

< 61 ppb

Formaldehyde甲醛 (HCHO)

  Adhesives 膠黏劑

  Furniture 傢俱

  Paints 油漆

  Smoking 吸煙

< 30μg/m³

< 100μg/m³

Total Volatile Organic Compounds總揮發性有機化合物 (TVOC)

  Cleaning agents清潔用品

  Disinfectants 消毒劑

  Paints and Solvents油漆及溶解劑

  Furniture and furnishings傢俱及室內陳設

  Smoking吸煙

  Printing inks 油墨

< 87 ppb

< 261 ppb

Radon氡氣 (Rn)

  Building material such as concrete made with granite花崗岩

< 150 Bq/m³

< 200 Bq/m³

Airborne Bacteria空氣中細菌

  Carpets or building material are mouldy or wet地毯

  Poor ventilated premises空氣不流通的地方

< 500 cfu/m³

< 1,000 cfu/m³

Air Movement空氣流動速度

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< 0.2 m/s

< 0.3 m/s

Room Temperature室內溫度

----

20-25.5 ^oC

< 25.5 ^oC

Relative Humidity相對濕度

----

40-70%

< 70%