14. Solutions
Parts per Million (ppm)
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ANSWERS OPTIONS
A
0.85 ppm
B
0.085 ppm
C
85 ppm
D
0.0085 ppm
Arsenic and all its inorganic compounds are highly toxic substances. A blood concentration of more than 5 μg/dL of arsenic is harmful to human health. A study performed on a small number of people working in the alloy industry found an average concentration of 8.5 μg/dL. Express this concentration in ppm units.