Air Pollution Presented By Tanmoy Baroi Roll no
Air Pollution Presented By Tanmoy Baroi Roll no – 46 Course –B. Ed Session- 2013 -2014 University B. T. & Evening College
Life-Air � Air? Not Ordinary Air! It is Life-Air from the Skies! • Without ‘Food’ (but ‘Water’) human can live for ‘ 3 Days’. • Without ‘Water’ (and no ‘Food’) human can live for ‘ 1 Day’. • • � � Without ‘Air’ (even with ‘Food’ and ‘Water’) human can live for ‘ 1 Minute’. Ques: Guess, what is ‘Death’? Ans: No Air for ‘ 1 Minute’ is called as ‘Death’. o s s Air i tant. r o p im s i n o i t u l l Po s u o i r e s a. e u iss
What is air pollution �Any visible or invisible particle or gas found in the air that is not part of the original, normal composition.
Factors that affect air pollution � Emissions � Weather � Bomb (traffic, industrial, domestic) conditions (rain, winds, humidity) tests/blasts across the Globe � Nuclear energy diffusion across the Globe, � Lack of enough growth of trees (to take carbon oxides) due to lack of enough rains � O 3 (Ozone) layer curse � Indoor vs outdoor
Air Pollution - Health Effects �Health Effects of Air Pollution are many! A few are mentioned below: I. Health Effects: wheezing, coughing, lungs/breathing quality, dust allergy, sleeplessness (insomnia). II. Long-term Health Effects: emphysema, bronchitis, asthma, weakness, stamina loss, skin irritation/diseases.
Main Air Pollutants �sulfur dioxide �nitrogen oxides �carbon monoxide, and �lead
Sources of combustion �Tobacco �Power plants �Automobiles �Industry
Outdoor air pollution Delhi Beijing
Indoor air pollution: Poor countries
Gas pollutants - SO 2 � Properties ◦ Reacts with H 2 O and forms sulfurous acid (H 2 SO 3), which oxidizes to sulfuric acid (H 2 SO 4) ◦ Chemical transformation of other pollutants ◦ Responsible for acid rain effect � Sources ◦ Biomass and fossil fuel combustion ◦ Industrial emissions, smelters � Health effects (starting at <1 ppm) ◦ Respiratory tract irritation, ◦ Bronchitis ◦ Exacerbation of heart diseases
Gas pollutants -NO 2 � Properties ◦ Oxidant, less potent than O 3 � Sources ◦ NO oxidation ◦ High To combustion (automobiles, power plants) ◦ Indoor - kerosene, gas stoves, ETS ◦ Silos in farming (75 -100 ppm) � Health effects - starting at 1. 5 -2 ppm ◦ Deep lung irritant - terminal bronchioles ◦ Alveolar cells, ciliated epithelia, Clara cells ◦ Similar to ozone but less inflammatory (if < 2 -5 ppm)
Gas pollutants - CO � Properties ◦ Odorless, heavier than air, stronger binder to Hb than O 2 � Sources ◦ Incomplete combustion ◦ Traffic (inside the car, parking garages, tunnels is highest) ◦ Inside cars = 3 x urban streets, and = 5 x residential streets Health effects: confusion, headaches, dizziness, cardiac function
The other problems. . .
The Greenhouse Effect
Global Warming
Thinning of Upper OZone Layer
Acid Rain
So, What can WE do?
• Tell our friends and family about pollution • Make sure your parents get pollution checks on their cars • Learn more; stay u p to d ate Switch off lights, fan, heat, etc. when you leave the room
We only have one world. . . Do you want it like this
Thank You
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