Note on the standard value of serial number parameter category parameter unit

1 physical temperature℃ 22 ~ 28 summer air conditioning

16 ~ 24 winter air conditioning

air sampler

2 Relative humidity% 40 ~ 80 Summer air conditioning

30 ~ 60 winter air conditioning

3 wind speed m/s 0.3 summer air conditioning

0.2 Winter air conditioning

4 fresh air volume m3/h. 30 people

5 chemical sulfur dioxide SO2 mg/m3 0.5 1h average

6 nitrogen dioxide mg/m3 0.24 1h average.

7 average value of carbon monoxide CO mg/m3 10 1h

8 CO2 CO2% 0. 1 daily average

9 ammonia NH3 mg/m3 0.2 1h average

10 ozone O3 mg/m3 0. 16 1h average.

Average value 1 1 formaldehyde hchomg/m3 0.10/h

12 benzene c6h6mg/m3 0.11.1h average.

13 toluene C7H8/m3 0.20 1h average

14 xylene C8H 10/0mg/m3 0.20 1h average.

Daily average 15 benzo [a] pyrene B(a)P ng/m3 1

16 daily average PM 10 mg/m3 0. 15.

17 TVOC mg/m3 0.6 8 hour average.

18 the total number of biological bacteria cfu/m3 2500 is determined by the instrument.

19 400-year average of radioactive radon 222 rnbq/m3

(action level c)

A fresh air volume shall not be less than the standard value, and other parameters except temperature and relative temperature shall not be greater than the standard value;

B see appendix d.

C to reach the action level, it is suggested to take intervention measures to reduce indoor radon concentration.

This standard is applicable to indoor environments such as residential buildings and office buildings, and can be implemented with reference to this standard.

This standard was issued by the General Administration of Quality Supervision, Inspection and Quarantine, the Ministry of Health and the State Environmental Protection Bureau on June 1 KLOC-0/9, 2002 and implemented on March12003.

2. Code for indoor environmental pollution control of civil construction projects

Serial number pollutant (unit) concentration limit

First-class and second-class

1 formaldehyde HCHO (mg/m3) ≤0.08 ≤0. 1

2 ammonia NH3 (mg/m3) ≤0.2 ≤0.2

3 Benzene C6H6 (mg/m3) ≤0.09 ≤0.09

4 radon 222Rn (Bq/m3) ≤200 ≤400

5 TVOC (mg/m3) ≤0.5 ≤0.6

Note: The measured value of pollutant concentration in table 1 refers to the blank value after deducting the corresponding value (background value) of the measured value of outdoor upwind air from the indoor measured value, except radon.

This standard is applicable to indoor environmental pollution control of civil construction projects (Grade I and II) and indoor environmental pollutant concentration detection during project quality acceptance.

A class of civil construction projects: houses, dormitories, hospital wards, old buildings, kindergartens, school classrooms and other places;

Class II civil construction projects: hotels, office buildings, cultural and entertainment places, bookstores, libraries, exhibition halls, gymnasiums, shopping malls (shops), public transport waiting rooms, hospital waiting rooms, restaurants, barbershops and other places.