|
|
 |
 |
 |
|
| Pollutants |
average |
Standard |
Source |
| 1.Carbonmonoxide (CO) |
1
hr |
Not exceed 30 ppm. (34.2 mg/m3) |
1 |
| 8 hr |
Not
exceed 9 ppm. (10.26 mg/m3) |
| 2.Nitrogen Dioxide (NO2) |
1 hr |
Not exceed 0.17 ppm. (0.32 mg/m3) |
1,3,4 |
| 1
year |
Not exceed 0.03 ppm. (0.057 mg/m3) |
| 3.Ozone (O3) |
1 hr |
Not exceed 0.10 ppm. (0.20 mg/m3) |
1,3 |
| 8 hr |
Not exceed 0.07 ppm.(0.14 mg/m3) |
| 4.Sulfur Dioxide
(SO2) |
1
year |
Not exceed 0.04 ppm. (0.10 mg/m3) |
1,2 |
| 24 hr |
Not
exceed 0.12 ppm.(0.30 mg/m3) |
| 1
hr |
Not exceed 0.3 ppm.(780 µg/m3) |
| 5.Lead (Pb) |
1
month |
Not exceed 1.5 µg/m3 |
1 |
6.TSP
( Particulate Matter Ø < 100 µm ) |
24
hr |
Not exceed 0.33 mg/m3 |
1,2 |
| 1 year |
Not
exceed 0.10 mg/m3 |
7.PM-10
( Particulate Matter Ø < 10 µm ) |
24 hr |
Not
exceed 0.12 mg/m3 |
1,2 |
| 1
year |
Not exceed 0.05 mg/m3 |
8.PM-2.5
( Particulate Matter Ø < 2.5 µm ) |
24
hr |
Not exceed 0.05 mg/m3 |
5 |
| 1 year |
Not
exceed 0.025 mg/m3 |
|
| Remark |
: |
1. |
Short term average standandard (1, 8 and 24 hrs.)is to prevent acute effect
on for human health |
| 2. |
Long term average standard (1 month and 1 year
) is to prevent long term or chronic effect on human health
|
|
|
| Source |
: |
- Notification
of National Environmental Board No. 10 , B.E 2538 (1995) under the Enhancement and Conservation of National Environmental
Quality Act B.E.2535 (1992), published in the Royal Government
Gazette No. 112 Part 52 dated May 25, B.E.2538 (1995)
- Notification
of National Environmental Board No. 24, B.E. 2547 (2004) under the Enhancement and Conservation of National Environmental
Quality Act B.E.2535 (1992), published in the Royal Government
Gazette No. 121 Special Part 104 D dated September 22, B.E.2547
(2004)
- Notification
of National Environmental Board No. 28 , B.E 2550 (2007) under
the Enhancement and Conservation of National Environmental
Quality Act B.E.2535 (1992), published in the Royal Government
Gazette No. 124 Part 58 dated May 14, B.E.2550 (2007)
- Notification
of National Environmental Board No. 33 , B.E 2552 (2009) under
the Enhancement and Conservation of National Environmental
Quality Act B.E.2535 (1992), published in the Royal Government
Gazette No. 126 Part 114 dated August 14, B.E.2552 (2009)
- Notification
of National Environmental Board No. 36 , B.E 2553 (2010) under
the Enhancement and Conservation of National Environmental
Quality Act B.E.2535 (1992), published in the Royal Government
Gazette No. 127 Part 37 dated March 24, B.E.2553 (2010)
|
|
 |
 |
| Sulfur Dioxide in Ambient Air Standards
of Thailand |
|
 |
| Pollutant |
Concentration/time/area |
Standard
value |
| Sulfur Dioxide (SO2) |
1 hr./area |
Not exceed0.30 ppm
(780 µg/m3) |
|
|
|
|
| Volatile
Organic Compounds (VOCs) in Ambient Air Standards of Thailand |
|
|
| Pollutants |
Standard |
| 1. Benzene |
Not exceed 1.7 µg/m3 |
| 2.
Vinyl Chloride |
Not exceed 10 µg/m3 |
| 3. 1,2 - Dichloroethane |
Not exceed 0.4 µg/m3 |
| 4. Trichloroethylene |
Not exceed 23 µg/m3 |
| 5. Dichloromethane |
Not exceed 22 µg/m3 |
| 6. 1,2 - Dichloropropane |
Not exceed 4 µg/m3 |
| 7. Tetrachloroethylene |
Not exceed 200 µg/m3 |
| 8. Chloroform |
Not exceed 0.43 µg/m3 |
| 9. 1,3 - Butadiene |
Not exceed 0.33 µg/m3 |
|
| Remark |
: |
1. |
One year Volatile Organic Compounds (VOCs) in Ambient Air is determined
from the Arithemetic Mean of VOCs analysis from continuously 24 hour ambient
air sampling (at least once a month) |
| 2. |
In case of the collected ambient air sample(s)
was unable to be analysed, the new sampling and analysis must
be done within 30 days from the previous sampling date. |
| 3. |
Reference Condition is 25 degree Celsius at 1 atm or 760 mmHg |
| Source |
: |
- Notification
of National Environmental Board No. 30 , B.E 2550 (2007) under
the Enhancement and Conservation of National Environmental
Quality Act B.E.2535 (1992), published in the Royal Government
Gazette No. 124 Part 143 dated September 14, B.E.2550 (2007)
|
|
|
|
