ENVIS Centre, Ministry of Environment & Forest, Govt. of India

Printed Date: Monday, October 22, 2018

Status of Pollution in Himachal Pradesh

Ambient Air Quality Monitoring:

The monitoring of Ambient Air Quality was started in 1986-87 under the National Ambient Air Quality Monitoring Programme (NAMP) with the objective to find the current status of pollution and to study the trends as a result of increasing industrialization. The general objectives of the programme are:

1. To evaluate the general air quality conditions in the cities and to provide the basis for analyzing long term trends of pollution concentrations.

2. To provide the data for subsequent development of air quality standards and pollution prevention and control programme for the cities.

The Respirable Suspended Particulate Matter (RSPM) is monitored with the help of Respirable Dust Sampler on the basis of three days per station per week for 24 hours at 10 Towns/Cities covering 20 nos. of locations in the State. The State Board has also initiated air quality monitoring stations at Dharamshala.

National ambient air quality standards (NAAQS) as notified in 18th November 2009 are given in Table-4.1

TABLE-4.1

S. No.

Pollutant

Time Weighted Average

Concentration in Ambient air

Industrial, Residential, Rural and Other Area

Ecologically Sensitive Area (Notified by Central Govt.)

Method of Measurement

1

Sulphur Dioxide

Annual*

 

50 μg/m3

 

20 μg/m3

 

-Improved West and Gaeke

-Ultraviolet fluorescence

24hours**

80 μg/m3

80 μg/m3

2

Nitrogen Dioxide

 

Annual*

 

40 μg/m3

 

30 μg/m3

 

-Modified Jacob and Hochheiser

(Na-Arsenite)

-Chemiluminescence

24hours**

 

80 μg/m3

 

80 μg/m3

 

3

Particulate Matter (PM10)

(size less than 10 micron)

Annual*

 

60 μg/m3

 

60 μg/m3

 

-Gravimetric

-TOEM

-Beta attenuation

24hours**

 

100 μg/m3

 

100 μg/m3

 

4

Particulate Matter (PM2.5) (size less than 2.5 micron)

Annual*

40 μg/m3

40 μg/m3

-Gravimetric

-TOEM

-Beta attenuation

5

Ozone (O3)

8 hours**

 

100 μg/m3

 

100 μg/m3

 

-UV photometric

-Chemiluminescence

-Chemical method

1 hour**

180 μg/m3

180 μg/m3

6

Lead (Pb)

 

Annual*

 

0.50 μg/m3

 

0.50 μg/m3

 

-AAS/ICP method after sampling on EPM 2000 or equivalent filter paper

-ED-XRF using Teflon filter

24hours**

 

1.0 μg/m3

 

1.0 μg/m3

 

7

Carbon Monoxide (CO)

8 hours

 

2.0 mg/m3

 

2.0 mg/m3

 

-Non Dispersive Infra Red (NDIR)

Spectroscopy

1 hour

4.0 mg/m3

4.0 mg/m3

8

Ammonia (NH3)

Annual*

 

100 μg/m3

 

100 μg/m3

 

-Chemiluminescence

-Indophenol blue method

24hours**

400 μg/m3

400 μg/m3

9

Benzene (C6H6)

Annual*

5.0 μg/m3

5.0 μg/m3

-Gas Chromatography based continuous analyzer

-Adsorption and desorption followed By GC analysis

10

Benzo(a) Pyrene (BaP)- Particulate phase only

Annual*

1.0 ng/m3

1.0 ng/m3

-Solvent extraction followed by

HPLC/GC analysis

11

Arsenic (As)

Annual*

6.0 ng/m3

6.0 ng/m3

-AAS/ICP method after sampling on EPM 2000 or equivalent filter paper

12

Nickel (Ni)

Annual*

20.0 ng/m3

20.0 ng/m3

-AAS/ICP method after sampling on EPM 2000 or equivalent filter paper

             

Annual arithmetic mean of minimum of 104 measurements in a year at a particular site taken twice a week 24 hourly at uniform intervals.

**         24 hourly or 08 hourly or 01 hourly monitored values, as applicable, shall be compiled with 98% of the time in a year. 2% of the time, they may exceed the limits but not on two consecutive days of monitoring.                                                          

Dust Sampler on the basis of three days per station per week for 24 hours at 10 Towns/Cities covering 20 nos. of locations in the State. The State Board has also initiated air quality monitoring stations at Dharamshala.

 

 

 

Source: Pollution Control Board, Himachal Pradesh