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670×103 ppm
160×103 ppm
93×103 ppm
72×103 ppm
7×103 ppm to 12×103 ppm
9.4×103 ppm
8.5×103 ppm
3×103 ppm to 7.2×103 ppm
2×103 ppm to 4×103 ppm
250 ppm to 1400 ppm
590 ppm
240 ppm
100 ppm to 360 ppm
13 ppm to 120 ppm
30 ppm
5 ppm to 45 ppm
3 ppm to 23 ppm
2 ppm to 22 ppm
3 ppm to 12 ppm
3.6 ppm to 9.6 ppm
0.22 ppm to 7 ppm
0.2 ppm to 7 ppm
1.3 ppm to 5.8 ppm
1.2 ppm to 4.7 ppm
0.018 ppm to 3.7 ppm
0.02 ppm to 3.3 ppm
0.35 ppm to 2.4 ppm
0.4 ppm to 2.3 ppm
0.23 ppm to 2.3 ppm
0.02 ppm to 1.8 ppm
0.023 ppm to 1.6 ppm
0.7 ppm
0.04 ppm to 1.2 ppm
0.06 ppm to 1.1 ppm
0.3 ppm
0.29 ppm
0.011 ppm to 0.42 ppm
0.05 ppm to 0.36 ppm
0.015 ppm to 0.33 ppm
0.15 ppm
0.005 ppm to 0.25 ppm
0.11 ppm
0.04 ppm to 0.054 ppm
0.025 ppm
0.004 ppm to 0.033 ppm
0.014 ppm
<0.01 ppm
0.006 ppm
0.003 ppm
0.0025 ppm
0.0016 ppm
0.0004 ppm to 0.0014 ppm
0.0004 ppm
0.72×10-9 ppm
Bowen, H. J. M. Environmental Chemistry of the Elements. London: Academic Press, Inc., 1979.
Emsley, John. The Elements, 3rd edition. Oxford: Oxford University Press, 1998.
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