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7.1 Compound of Fluorine ion solution
Standard Solution：
Precisely weigh 4.20g dissolve it in distilled water, add water to 1000mL and store in plastic
bottle. This solution is 1×10
2
－
1×10
mol/L F
3
－
1×10
mol/L F
Total Ion Strength Adjustment Agent (TISAB)
Weigh 58.8g Na
C
3
value of solution to 5 ~ 6, then dilute the solution to 1000mL
Solution for Testing
2
－
pF2(1×10
mol/L F
adjustment agent (TISAB) 20ml, dilute the solution with distilled water to 100mL
3
－
pF3(1×10
mol/L F
adjustment agent (TISAB) 20ml, dilute the solution with distilled water to 100mL
4
－
pF4(1×10
mol/L F
adjustment agent (TISAB) 20ml, dilute the solution with distilled water to 100mL
7.2 Relationship Chart between DO Concentration and Temperature
Temp( )
C
(mg/L)
S
0.0
14.46
1.0
14.22
2.0
13.82
3.0
13.44
4.0
13.09
5.0
12.74
6.0
12.42
7.0
12.11
8.0
11.81
9.0
11.53
10.0
11.26
11.0
11.01
12.0
10.77
13.0
10.53
14.0
10.30
15.0
10.08
16.0
9.86
17.0
9.66
18.0
9.46
19.0
9.27
20.0
9.08
This chart is digested from ISO5813-1983 water analyze – measurement of dissolved oxygen in
water – iodine titration
7.3
Notice for Ordering
7. Appendix
1
－
mol/L F
1
－
－
：take 1×10
mol/L F
2
－
－
：take 1×10
mol/L F
H
O
·2H
O and 85g NaNO
6
5
7
2
1
－
－
)：take 1×10
2
－
－
)：take 1×10
3
－
－
)：take 1×10
∆C
(mg/L)
Temp( )
S
0.0925
21.0
0.0890
22.0
0.0857
23.0
0.0827
24.0
0.0798
25.0
0.0771
26.0
0.0745
27.0
0.0720
28.0
0.0697
29.0
0.0675
30.0
0.0653
31.0
0.0633
32.0
0.0614
33.0
0.0595
34.0
0.0577
35.0
0.0559
36.0
0.0543
37.0
0.0527
38.0
0.0511
39.0
0.0496
40.0
0.0481
－
。
－
solution 100ml，dilute it to 1000ml；
－
solution 100ml，dilute it to 1000ml；
dissolve these in distilled water, adjust the pH
3,
－
mol/L F
solution 10ml，add total ion strength
－
mol/L F
solution 10ml，add total ion strength
－
mol/L F
solution 10ml，add total ion strength
C
(mg/L)
S
8.90
8.73
8.57
8.41
8.25
8.11
7.96
7.82
7.69
7.56
7.43
7.30
7.18
7.07
6.95
6.84
6.73
6.63
6.53
6.41
∆C
(mg/L)
S
0.0467
0.0453
0.0440
0.0427
0.0415
0.0404
0.0393
0.0382
0.0372
0.0302
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