AIR POLLUTION CONTROL course material by Prof S S JAHAGIRDAR,NKOCET,SOLAPUR for BE (CIVIL ) students of Solapur university. Content will be also useful for SHIVAJI and PUNE university students

1. AIR POLLUTION
(Elective-I)
Numerical on units of measurement and conversion
1)
If SO2, CO and NO2 are found out to be 1000 ppm, 600 ppm and 200 ppm respectively in a
air quality survey. What are concentrations in µg/m3?
2)
If concentrations of SO2, CO and NO2 are given as 1200 ppm, 4000 ppm and 500 ppm
respectively. What are their concentrations in µg/m3?
3)
The concentration of CO reaches in room to a level of 400 ppm. Express this value in µg/m3.
4)
The average daily concentration off SO2 is observed to be 415 µg/m3 at 250 C and 1
atmospheric pressure. Find out concentration of SO2 in ppm.
5)
The ozone concentration at 00 C and 1 atmospheric pressure found out to be 118 µg/m3.Find
concentration of ozone in ppb.
6)
Calculate concentrations of following air pollutants in µg/m3.Assume STP conditions
i)
ii)
CO – 1500 ppm
iii)
7)
SO2 – 1100 ppm
NO2 – 800 ppm
The exhaust gas from an automobile contains 1.5% by volume of CO. What is concentration
of CO in mg/m3 at 250 C and 1 atmospheric pressure?
8)
The exhaust gas from an automobile contains 1.0% by volume of CO. What is concentration
of CO in mg/m3 at 250 C and 1 atmospheric pressure?
9)
The ozone concentration is observed to be 80 µg/m3 at an urban monitoring station. Does the
value exceed the standard clean air?
10)
The NO and CO content of sample of air at 220 C and 1 atmospheric pressure is 20 and 100
ppm respectively. Calculate their concentration in µg/m3?
11)
Convert the following into ppm at 300 C
i)
Ozone – 25 µg/m3
ii)
H2S – 15 µg/m3
12)
Convert ozone concentration of 0.2 ppm to µg/m3if temperature is 300 C.
13)
250 µg/m3 of ozone is present in the atmosphere at 25 0 C. What is the concentration of ozone
in ppm and ppb.
14)
H2S concentration in the atmosphere is 25 ppm at 25 0 C. What is equivalent concentration in
mg/m3?
15)
Do as directed
i)
CO – 100 µg/m3 (convert to ppb)
ii)
NO – 10 ppm (convert to mg/m3)