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value literature
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2.00 ppm 8
3.00 ppm 8
4.00 ppm 7
4.00 ppm 7
4.00 ppm 8
4.20 ppm 17
5.00 ppm 7
5.60 ppm 17
6.00 ppm 7
6.00 ppm 8
6.84 ppm 17
7.70 ppm 17
10.00 ppm 8
13.00 ppm 17
19.00 ppm 8
50.00 ppm 7
53.00 ppm 17
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count 17
average 11.96 ppm
standard deviation 14.99 ppm(125 %)

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