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540×103 ppm
245×103 ppm
160×103 ppm
42×103 ppm to 60×103 ppm
29×103 ppm
1×103 ppm to 4.8×103 ppm
150 ppm to 3200 ppm
20 ppm to 2×103 ppm
18 ppm to 1700 ppm
150 ppm to 660 ppm
220 ppm
83 ppm to 165 ppm
19 ppm to 160 ppm
3 ppm to 70 ppm
0.65 ppm to 53 ppm
5 ppm to 45 ppm
19 ppm
4 ppm to 29 ppm
<15 ppm
0.1 ppm to 15 ppm
0.37 ppm to 1.1 ppm
0.08 ppm to 14 ppm
5 ppm
1.2 ppm to 7.6 ppm
0.2 ppm to 6.5 ppm
0.6 ppm to 6 ppm
0.25 ppm to 5.7 ppm
2.3 ppm
0.55 ppm to 4 ppm
2.2 ppm
<2 ppm
2 ppm
0.005 ppm to 3.8 ppm
0.06 ppm to 3.7 ppm
0.13 ppm to 3.6 ppm
0.09 ppm to 3 ppm
0.24 ppm to 2.7 ppm
1.4 ppm
0.0017 ppm to 1.8 ppm
0.4 ppm to 1 ppm
0.2 ppm to 1 ppm
0.05 ppm to 0.9 ppm
0.15 ppm to 0.65 ppm
0.2 ppm to 0.5 ppm
0.0045 ppm to 0.5 ppm
0.25 ppm
0.06 ppm to 0.2 ppm
0.07 ppm
<0.02 ppm
0.016 ppm
0.006 ppm to 0.02 ppm
<0.003 ppm
0.00013 ppm
19×10-9 ppm
Bowen, H. J. M. Environmental Chemistry of the Elements. London: Academic Press, Inc., 1979.
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