室內空氣質

Indoor Air Quality (IAQ) 室內空氣質素設備, 室內空氣質素測試 - Our Company

Your Indoor Air Quality Solution Provider -Indoor Air Quality Centre "室內空氣質素中心"

Indoor Air Quality Measurement

As an IAQ solution provider, Indoor Air Quality Centre "室內空氣質素中心" provide measurement of IAQ parameters according to Environmental Protection Department (EPD)’s Guidance Note in Hong Kong.

ause 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.

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).

Indoor Air Quality Centre "室內空氣質素中心" Help To Solve Your IAQ Problem

12 Parameters

1/. Carbon Dioxide (CO₂)

2/. Carbon Monoxide (CO)

3/. Respirable Suspended Particulate (RSP)

4/. Nitrogen Dioxide (NO₂)

5/. Ozone (O₃)

6/. Formaldehyde (HCHO)

7/. Total Volatile Organic Compounds (TVOC)

8/. Radon (Rn)

9/. Airborne Bacteria Count

10/. Room Temperature

11/. Relative Humidity

12/. Air movement

Scope of Work

● 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.

info@iaqhk.com

Indoor Air Quality Objective

The IAQ Objectives are the common benchmark for evaluating and assessing IAQ. They are comparable to the international health-based air quality standards. There are 2 levels of IAQ Objectives as follows:

Good - represents very good IAQ that a high-class and comfortable building should have.

Excellence - represents the IAQ that provides protection to the public at large including the very young and the aged.

The rationale of providing different objectives is to minimise the cost of implementation for the achievement of different degrees of the desired "optimal health". The IAQ Objectives are not meant to be exhaustive to avoid all IAQ problems. However, if all the parameters (see Table 1 below) are met, the likelihood of indoor air pollution leading to health problems or discomfort in the building is remote. Building owners and employers therefore should endeavour to achieve the IAQ Objectives as far as practicable.

參數	單位	八小時平均 ^a
參數	單位	卓越級	良好級
室內溫度 Room Temperature	° C	20 至 < 25.5 ^b	< 25.5 ^b
相對濕度 Relative Humidity	%	40 至 < 70 ^c	< 70
空氣流動速度 Air movement	m/s	< 0.2	< 0.3
二氧化碳 (CO₂) Carbon Dioxide (CO₂)	ppmv	< 800 ^d	< 1,000 ^e
一氧化碳 (CO) Carbon Monoxide (CO)	m g/m³	< 2,000 ^f	< 10,000 ^g
一氧化碳 (CO) Carbon Monoxide (CO)	ppmv	< 1.7	< 8.7
可吸入懸浮粒子 (PM₁₀) Respirable Suspended Particulates (PM₁₀)	m g/m³	< 20 ^f	< 180 ^h
二氧化氮 (NO₂) Nitrogen Dioxide (NO₂)	m g/m³	< 40 ^g	< 150 ^h
二氧化氮 (NO₂) Nitrogen Dioxide (NO₂)	ppbv	< 21	< 80
臭氧 (O₃) Ozone (O₃)	m g/m³	< 50 ^f	< 120 ^g
臭氧 (O₃) Ozone (O₃)	ppbv	< 25	< 61
甲醛 (HCHO) Formaldehyde (HCHO)	m g/m³	< 30 ^f	< 100 ^{f, g}
甲醛 (HCHO) Formaldehyde (HCHO)	ppbv	< 24	< 81
總發揮性有機化合物 (TVOC) Total Volatile Organic Compounds (TVOC)	m g/m³	< 200 ^f	< 600 ^f
總發揮性有機化合物 (TVOC) Total Volatile Organic Compounds (TVOC)	ppbv	< 87	< 261
氡氣 (Rn) Radon (Rn)	Bq/m³	< 150 ⁱ	< 200 ^f
空氣中細菌 Airborne Bacteria	cfu/m³	< 500^{j, k}	< 1,000 ^{j, k}

本中心提供室內空氣質素測試, 協助申請政府部門認可之測試報告及註冊工程師簽處之室內空氣質素証書.

提供專業意見, 協助改善室內空氣質素及辨理申請於政府部門註冊証書.

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