tabela saturacao

Table 1. Solubility of O2 in water in equilibrium with air 760 mm Hg pressure and
100% relative humity fom Montgomery, Thom and Cockburn (1964)
Temperature
of sample
C
Solubility
mg/l
Temperature
of sample
C
Solubility
mg/l
0
14.63
18
9.64
1
14.23
19
9.27
2
13.84
20
9.08
3
13.46
21
8.91
4
13.11
22
8.73
5
12.77
23
8.57
6
12.45
24
8.42
7
12.13
25
8.26
8
11.84
26
8.12
9
11.55
27
7.97
10
11.28
28
7.84
11
11.02
29
7.70
12
10.77
30
7.57
13
10.53
31
7.45
14
10.29
32
7.33
15
10.07
33
7.21
16
9.86
34
7.09
17
9.65
35
6.98
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If the barometric pressure at the time of sampling is not 760 mm Hg then the saturation
values at the actual pressure will differ from those given in the table according to the
formula:
Sx = SPx
760
where: Sx= Solubility at pressure Px
S = Solubility at 760 mm Hg
Px= Observed pressure im mm Hg
It is therefore necessary in accurate work, to note the barometer reading at the time of
sampling. For less accurate work the average barometric pressure may be estimated
from the altitude (Table 8.2)
Table 2. Variation of mean atmospheric pressure with altitude (Dussart and
Francis-Bocuf (1949)
Altitude
Average
Factor
Altitude
Average
Factor
atmospheric
atmospheric
pressure
pressure
(mm Hg)
(mm Hg)
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0
760
1.00
1300
647
1.17
100
750
1.01
1400
639
1.19
200
741
1.03
1500
631
1.20
300
732
1.04
1600
623
1.22
400
723
1.05
1700
615
1.24
500
714
1.06
1800
608
1.25
600
705
1.08
1900
601
1.26
700
696
1.09
2000
594
1.28
800
687
1.11
2100
587
1.30
900
679
1.12
2200
580
1.31
1000
671
1.13
2300
573
1.33
1100
663
1.15
2400
566
1.34
1200
655
1.16
2500
560
1.36
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