Table 4 Ambient Air Concentration in 16 Curbsides Stations in Bangkok1


Stations

Max TSPa (24 hr.)b
(mg/cu.m)c

Max Pbd (24 hr.)
(mg/cu.m)

Max CO (8 hr.)e
(mg/cu.m)

2ND High CO (8 hr.)f
(mg/cu.m)
1. Pratoonam

1,530

1.02

9.10

8.84
2. Yaovaraj

860

0.98

11.39

10.58
3. Lanluang

450

0.59

-

-
4. Banglampoo

400

0.61

11.57

11.27
5. Sapankwai

410

0.59

11.43

10.93
6. Silom

500

0.67

15.50

15.29
7. Si Praya

-

-

8.00

7.85
8. Huamark

1,110

1.66

18.93

18.72
9. Rama 1

600

0.54

9.89

9.68
10. Bangkhen

410

0.33

11.26

11.12
11. Prannok

750

0.51

20.35

19.61
12. Charansanidwong

460

0.51

15.19

11.32
13. Ban Somdej

800

1.14

17.64

17.48
14. Phrayathai

540

0.48

10.10

9.96
15. Taksin

330

0.24

-

-
16. Samsen

460

0.15

-

-
Standard2

330

10.00

20.00

20.00
Proposed standards3

330

1.25

10.00

10.00

 

Notes: 1 Ambient air quality monitoring data from the Pollution Control Department.
  2 Standard set by Office of National Environment Board (ONEB) in 1981.
  3 Proposed Interim National Ambient Air Quality Standards for Thailand set by Pollution Control
Department, Air Quality and Noise Management Division, and The World Bank, 1993.
  a = Total Suspended Particulate; b = average readings over 24 hrs.;
c = micrograms per cubic meter; d = lead; e = reading taken over an average of 8 hrs.;
f = the second highest reading from the same 8 hrs. average (see e).

 

Sources: Supat Wangwongwatana, 1994; personal communication with the Pollution Control Department;
  TEI Quarterly Environment Journal, Vol. 2 No. 3, July-September 1994.