1、 1National Standard of the Peoples Republic of China Ambient Air Quality Standard (GB3095-1996) 2National Standard of the Peoples Republic of China Ambient Air Quality Standard (GB3095-1996) 1. Subject and Scope This Standard stipulates the designation of functional areas of ambient air quality, sta
2、ndard classification, pollutants, sampling time and concentration limits, sampling and analyzing methods as well as the definition of validity of data statistics. This Standard is applicable to the evaluation of countrywide ambient air quality. 2. Reference Standard GB/T 15262 Air Quality Determinat
3、ion of sulfur dioxide Formaldehyde absorbing- pararosaniline spectrophotometry GB 8970 Air Quality Determination of sulfur dioxide in ambient airTetrachloromercurate (TCM)-pararosaniline method GB/T 5432 Ambient Air Determination of total suspended particles Gravimetric method GB6921 Air Quality Det
4、ermination of the concentration of airborne particulate matters GB/T15436 Ambient Air Determination of nitrogen oxides Saltzman method GB/T15435 Ambient Air Determination of nitrogen dioxides Saltzman method GB/T15437 Ambient Air Determination of ozone Indigo disulphonate spectrophotometry GB/T15438
5、 Ambient Air Determination of ozone Ultraviolet photometric method GB9801 Air Quality Determination of carbon monoxide Non-dispersive infrared spectrometry GB8971 Air Quality Determination of Benzoapyrene in flying dust Acetylated paper chromatography fluoroscene spectrophotometric method GB/T15439
6、Ambient Air Determination of Benzoapyrene in ambient air High performance liquid chromatography GB/T15264 Air Quality Determination of leadFlame atomic absorption spectrophotometric method GB/T15434 Ambient Air Determination of the mass concentration of fluoride Method by filter sampling and fluorin
7、e ion-selective electrode analysis GB/T15433 Ambient Air Determination of the fluoride Method by lime-paper sampling and fluorine ion-selective electrode analysis 3. Definition 3.1 Total suspended particles (TSP): The particles that can be suspended in the air with an aerodynamic equivalent diameter
8、 100 micrometer. 3.2 Breathable particles (PM10): The particles that can be suspended in the air with an aerodynamic equivalent diameter 10 micrometer. 33.3 Nitrogen oxide (as NO2): The nitrogen oxide existing in the air in the form of nitrogen monoxide and nitrogen dioxide. 3.4 Lead (Pb): The lead
9、and its compounds existing in TSP. 3.5 Benzoapyrene (BaP): The benzoapyrene existing in breathable particles. 3.6 Fluoride (as F): Inorganic fluoride existing in gaseous and particulate states. 3.7 Annual average: The arithmetic mean of daily average concentration in any year. 3.8 Quarterly average:
10、 The arithmetic mean of daily average concentration in any quarter. 3.9 Monthly average: The arithmetic mean of daily average concentration in any month. 3.10 Daily average: The average concentration on any day. 3.11 Hourly average: The average concentration in any hour. 3.12 Average in plant growth
11、 season: The arithmetic mean of monthly average concentration in any plant growth season. 3.13 Ambient air: Outside air which human beings, plants, animals, and buildings are exposed to. 3.14 Normal state: The state at a temperature of 273K and a pressure of 101.325Kpa. 4. Grouping and Standard Clas
12、sification of Functional Area of Ambient Air Quality 4.1 Grouping of functional area of ambient air quality Group I area includes natural protection zones, scenic spots and other areas for which special protections are necessary. Group II area includes the residential quarters designated in town pla
13、nning, mixed areas of business, communication and living, cultural areas, normal industrial areas and rural areas. Group III area includes specialized industrial areas. 4.2 Standard classification of ambient air quality The standard of ambient air quality is classified as three classes. Class 1 stan
14、dard is imposed for Group I area. Class 2 standard is imposed for Group II area. Class 3 standard is imposed for Group III area. 5. Concentration Limit This Standard stipulates the concentration limits of various pollutants that are not allowed to be exceeded. For the details, refer to the following
15、 table: 4Table 1 - Concentration Limit for Various Pollutants Concentration limit Pollutant Sampling time Class 1 standard Class 2 standard Class 3 standard Unit of concentration Sulfur dioxide SO2Annual average Daily average Hourly average 0.02 0.05 0.15 0.06 0.15 0.50 0.10 0.25 0.70 Total suspende
16、d particles TSP Annual average Daily average 0.08 0.12 0.20 0.30 0.30 0.50 Breathable particles PM10Annual average Daily average 0.04 0.05 0.10 0.15 0.15 0.25 Nitrogen oxide NOxAnnual average Daily average Hourly average 0.05 0.10 0.15 0.05 0.10 0.15 0.10 0.15 0.30 Nitrogen dioxide NO2Annual average
17、 Daily average Hourly average 0.04 0.08 0.12 0.04 0.08 0.12 0.08 0.12 0.24 Carbon monoxide CO Daily average Hourly average 4.00 10.00 4.00 10.00 6.00 20.00 Ozone O0Hourly average 0.12 0.16 0.20 mg/m3 (normal state) Lead pb Quarterly average Annual average 1.50 1.00 Benzoa Pyrene BaP Daily average 0.
18、01 Fluoride F Daily average Hourly average 7 null 20null m/m3(normal state) Fluoride F Monthly average in plant growth season 1.8 null 1.2 null 3.0 null 2.0 null m/(dm2/day) Note: null is applicable to urban area; null is applicable to pastoral area, agricultural-pastoral area in which priority is g
19、iven to pastoral, silkworm breeding area; null is applicable for agricultural area and forest zone. 6. Monitoring 6.1 Sampling The requirements of sampling point, sampling environment, sampling attitude and frequency for monitoring the ambient air are executed in accordance with “Technical Specifica
20、tions of Environment Monitoring” (Section: Atmosphere) 56.2 Analyzing Method For the analyzing methods for various pollutants, refer to Table 2. Table 2 - Analyzing methods for various pollutants Pollutant Analyzing method Source Sulfur dioxide (1) Formaldehyde absorbing-pararosaniline spectrophotom
21、etry (2) Tetrachloromercurate (TCM)-pararosaniline method (3) Ulraviolet photometric method null GB/T15262-94 GB8970-88 Total suspended particles Gravimetric method GB/T15432-95 Breathable particles Gravimetric method GB6921-86 Nitrogen oxide (as NO2) (1) Saltzman method (2) Chemiluminescene null GB
22、/T15436-95 Nitrogen dioxide (1) Saltzman method (2) Chemiluminescene null GB/T15435-95 Ozone (1) Indigo disulphonate spectrophotometry (2) Ultraviolet photometric method (3) Chemiluminescene null GB/T15437-95 GB/T15438-95 Carbon monoxide Non-dispersive infrared spectrometry GB9801-88 Benzoapyrene (1
23、) Acetylated paperchromatography fluorescene spectrophotometry (2) High-performance liquid chromatography GB9871-88 GB/T15439-95 Lead Flame atomic absorption spectrophotometric method GB/T15264-94 Fluoride (as F) (1) Method by filter sampling and fluorine ion-selective electrode analysis null (2) Me
24、thod by lime-paper sampling and fluorine ion-selective electrode analysis GB/T15434-95 GB/T15433-95 Note: ISO/CD10498, ISO7996, ISO10313 are executed respectively for null, null and null for the time being. Corresponding national standards will be implemented after their issuance; null is used for d
25、aily average and hourly average; is used for monthly average and average in plant growth season. 7. Definition of Validity of Data Statistics For definition of validity of data statistics, refer to Table 3. 6Table 3 - Definition of Validity of Data Statistics for Various Pollutants Pollutant Samplin
26、t time Definition of validity of data SO2, NOx, NO2Annual average At least 144 evenly-distributed daily averages are available each year. At least 12 evenly-distributed daily averages are available each month. TSP, PM10, pb Annual average At least 60 evenly-distributed daily averages are available e
27、ach year. At least 5 evenly-distributed daily averages are available each month. SO2, NOx, NO2, CO Daily average At least 18 hours for sampling are available each day. TSP, PM10, B(a)P, pb Daily average At least 12 hours for sampling are availabe each day. SO2, NOx, NO2, CO, O3 Hourly average At lea
28、st 45 minutes for sampling are available each hour. pb Quarterly average At least 15 evenly-distributed daily averages are available each quarter. At least 5 evenly-distributed daily averages are available each month. Monthly average At least 15 days for sampling are available each month. Average in
29、 plant growth season At least 70% of the monthly averages are available during each growth season. Daily average At least 12 hours for samling are available each day. F Hourly average At least 45 minutes for sampling are available each hour. 8. Implementation of Standard 8.1 The environemntal protec
30、tion authorities at various levels are responsible for the supervision and implementation of this Standard. 8.2 This Standard stipulates the hourly, daily, monthly, quarterly and annual averages of concentration limits, however, the environemntal protection authorities at various levels shall superv
31、ise the implementation of this Standard based on different purposes. 8.3 The functional areas of ambient air quality are designated by the environemntal protection authorities of cities above the prefecture-level (including prefecture-level cities), and submitted to the peoples government of the same level for approval and implementation.
