National ambient air quality standards 2009 was a act taken by indian government to have control on amount of harmful substances released in environment. This act was made way before in 90s but refurbished in 2009 once again with some modifications in values of those toxic substances

1. SHRENIK MEHAR
National ambient air
quality standards 2009
Roll No : 61
CSE (CYSE)

2. WHAT IS
AMBIENT AIR?
In its natural state, ambient air is not contaminated
by air - borne pollutants.
Ambient air is typically 78% nitrogen and 21%
oxygen.
The World Health Organization (WHO) defines
ambient air pollution as potentially harmful
pollutants emitted by industries, households, cars,
and trucks.

3. WHAT IS
AMBIENT AIR
POLLUTION?
Most fine particulate matter comes from fuel combustion from vehicles,
power plants, industry, households, or biomass burning.
WHAT CAUSES POLLUTION
WHO estimates fine particulate matter causes 25% of lung cancer
deaths, 8% of chronic obstructive pulmonary disease (COPD) deaths, and
15% of ischaemic heart disease and stroke.
WHAT 'WHO' ESTIMATES

4. Advanced technology is available to monitor
particulates in ambient air. These instruments
measure critical regulatory parameters including
PM-10 and PM-2.5 mass concentration as it exists
in ambient air.
HOW POLLUTION
IS MEASURED?

5. PASSIVE MONITORING
Diffusion tubes absorb a specific pollutant
from the ambient air normally monitor for
2-4 weeks at a time and don't need power
supply.
Methods for monitoring
ACTIVE (SEMI-AUTOMATIC)
SAMPLING
An analyzer pulls the ambient air through a
filter and flow rate is typically in the range
of milliliters per minute for gases.
AUTOMATIC POINT
MONITORING
Ambient air is pulled through an analyzer,
monitored 24 hours a day. Produces High
resolution Measurements

6. NATIONAL
AMBIENT AIR
QUALITY
STANDARDS
National Ambient Air Quality Standards (NAAQS) are standards for air
quality measurement.
WHAT IS NATIONAL AMBIENT AIR QUALITY STANDARDS
The Air (Prevention and Control of Pollution) Act, 1981.
Prior to the November 2009 standards, India had set Air Quality
standards on 11 April 1994, and this was later revised on 14 October 1998.
WHEN WAS THIS IMPLEMENTED
Ozone (O3)
Nitrogen Oxides
Sulfur Oxides (SOX)
Carbon Monoxide (CO)
Lead
It focuses on six major contents of air – Particulate Matter
WHAT ARE THEIR MAIN CONCERNS

7. WHY NAAQS?
WHAT ARE THEIR OBJECTIVES
To indicate the levels of air quality necessary for safety purposes.
To assist in establishing priorities for abatement and control of
pollutant level.
FOR SOCIETY
To provide uniform yardstick for assessing air quality at national level.
To carry out and sponsor investigations and research related to
prevention and control of air pollution.
FOR RESEARCH

9. https://www.google.com/searchq=national+ambient+air+quality+standar
d+2009&source=lmns&bih=841&biw=1707&hl=en&sa=X&ved=2ahUKEwj9lN
K-4-X4AhWx0qACHX8qCvkQ_AUoAHoECAEQAA
https://www.thermofisher.com/blog/mining/what-is-ambient-
air/#:~:text=Ambient%20air%20is%20typically%2078,higher%20the%20p
ercentage%20of%20oxygen.
http://www.indiaenvironmentportal.org.in/content/291467/revised-
national-ambient-air-quality-standards-naaqs-2009/
REFERENCES

10. RICK ASTLEY
Never gonna give you up
Never gonna let you down
QUOTE OF THE DAY

11. THANK YOU
Stay safe and Have a nice one