Prikaz projekta:Determinating heavy metals in air using GLOBE protocols for aerosols,conductivity and pH

1. Determining the presence of heavy metals in the
air by using GLOBE protocols for aerosols,
conductivity and pH
Students: Dino Bešić , Sarah Butigan
Mentors: Marina Pavlić,Irena Sabo

2. How did we come up with the idea?
• In one of our past projects we determined that we can predict
the heavy metals pollution in the soil by using GLOBE protocols
for conductivity and pH.
•
• Using GLOBE protocols for aerosols, conductivity and pH we can
predict the heavy metal pollution in the air.

3. Who inspired us?
• The citizens of Bakar invited us to see the big black blot in the middle
of The Bakar Bay and the black particles in their homes
• we determined that the pollution was comming from the air.
• While reasrching we found new ways to use GLOBE protocols

4. Aerosols
• Solid or liquid particles suspended in
air with diameters between about
0.002 µm to about 100 µm
• Various chemical compounds, some of
them heavy metals

5. The amount of suspended particles in the air depends on:
• Direction and intensity of the wind
• Air temperature
• Moisture
• Rainfall
• Cloud coverage
• Insolation
• Stability of the troposphere

6. Prirodoslovna i grafička škola
Location
Bakar

7. Globe protocols
• Aerosols
• Air temperature
• Rainfall
• Conductivity
• pH

8. Data

9. Aerosol optical thickness

10. Solar noon temperatures daily at school

11. Average temperature in Bakar
0.0
5.0
10.0
15.0
20.0
25.0
9 10 11 12
Average temperature in Bakar ˚C

12. Air moisture at school

13. Air moisture at Bakar
68
70
72
74
76
78
80
82
84
86
88
9 10 11 12
Percentage of humidity in Bakar

14. Rainfall in school
0
50
100
150
200
250
300
9 10 11 12
Rainfall in location of PiGŠ

15. Rainfall in Bakar
0
50
100
150
200
250
300
350
400
9 10 11 12
Rainfall in Bakar( 2015)

16. Conductivity and pH
September October November December
Name of location Conductivity μS/cm
Bakar 663 665 661 663
PiGš 70,6 62,4 85,2 97,6
Measured pH
Bakar 7,7 7,5 7,6 7,6
PiGš 7 7 7 7

17. Heavy metals
Name of heavy metal
Pb Cd Cu Zn Fe Ni
μg/L μg/L μg/L μg/L μg/L μg/L
measurments
acquiered in
one month
Bakar 16,15 0,406 35 77 734 14,1
PiG school 0 0 0 0 0 0
Maximum alowed
concentration
1 0,005
Not
defined
0,02
Not
defined
20

18. Conclusion
• The air in Bakar contains more suspended particles of heavy metals than our
reference station( our school Prirodoslovna i grafička škola)
• Comparing the conductivity and pH levels in Rijeka and Bakar with the chemical
analysis we can conclude that our hypotesis is proven and that we can use GLOBE
conductivity and pH protocols to determine the presence of heavy metals in the
air .
• We could not prove the use the aerosol protocol but we will work further to
investigate the use of aerosol protocol too.

19. Special thanks for help
• Citizens of Bakar
• NZZJZ Rijeka
• The State Meteorological institute
• Our mentor
• YLACES
• Consulting scientists

20. THE END