Encyclopedia of Environmental Science and Engineering, Volume I and II

APPENDIX 1333

TABLE 3A

Composition of some typical natural waters (after Baldwin, 1948)^1

Na K Ca Mg Cl SO 4 CO 3 Total

(g/liter)

Soft fresh water 0.016 — 0.010 — 0.019 0.007 0.012 0.065

Hard fresh water 0.021 0.016 0.065 0.014 0.041 0.025 0.119 0.30

Sea water 10.7 0.39 0.42 1.31 19.3 2.69 0.073 34.9

TABLE 3B

Relative abundance of ions (by weight) in natural waters

Na K Ca Mg Cl SO 4 CO 3

Soft fresh water 100 — 62.5 3.3 119.0 43.8 75.0

Hard fresh water 100 76.0 310.0 66.8 195.0 119.0 567.0

Sea water 100 3.6 3.9 12.1 181.0 20.9 0.7

TABLE 4

Saturation values of dissolved oxygen in fresh- and seawater exposed to an atmosphere containing 20.9%

oxygen under a pressure of 760 mm of mercury

Temperature, C

Dissolved oxygen (mg/l) for stated

concentrations of chloride, mg/l Difference per

100 mg/l

0 5000 10,000 15,000 20,000 chloride

0 14.62 13.79 12.97 12.14 11.32 0.0165

1 14.23 13.41 12.61 11.82 11.03 0.0160

2 13.84 13.05 12.28 11.52 10.76 0.0154

3 13.48 12.72 11.98 11.24 10.50 0.0149

4 13.13 12.41 11.69 10.97 10.25 0.0144

5 12.80 12.09 11.39 10.70 10.01 0.0140

6 12.48 11.79 11.12 10.45 9.78 0.0135

7 12.17 11.51 10.85 10.21 9.57 0.0130

8 11.87 11.24 10.61 9.98 9.36 0.0125

9 11.59 10.97 10.36 9.76 9.17 0.0121

10 11.33 10.73 10.13 9.55 8.98 0.0118

11 11.08 10.48 9.92 9.35 8.80 0.0114

12 10.83 10.28 9.72 9.17 8.62 0.0110

13 10.60 10.05 9.52 8.98 8.46 0.0107

14 10.37 9.85 9.32 8.80 8.30 0.0104

15 10.15 9.65 9.14 8.63 8.14 0.0100

16 9.95 9.46 8.96 8.47 7.99 0.0098

17 9.74 9.26 8.78 8.30 7.84 0.0095

18 9.54 9.07 8.62 8.15 7.70 0.0092

19 9.35 8.89 8.45 8.00 7.56 0.0089

20 9.17 8.73 8.30 7.86 7.42 0.0088

(continued)

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