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value literature
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0.32 ppm 1
0.43 ppm 1
0.54 ppm 1
0.54 ppm 1
0.75 ppm 1
0.75 ppm 1
0.85 ppm 1
0.97 ppm 1
0.97 ppm 1
1.08 ppm 1
1.29 ppm 1
1.89 ppm 1
2.15 ppm 1
2.18 ppm 1
2.85 ppm 1
3.11 ppm 1
3.22 ppm 1
4.51 ppm 1
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count 18
average 1.58 ppm
standard deviation 1.16 ppm(73 %)

UNIVERSITY OF TECHNOLOGY VIENNA
Institute of Chemical Engineering, Fuel and Environmental Technology
Getreidemarkt 9/159
A-1060 Vienna
Austria