24
Lampiran 12 lanjutan
Ulangan 2 Ulangan
Volume tiosulfat terpakai ml Konsentrasi DO mgL
2 4
7 10
14 21
28 2
4 7
10 14
21 28
1
1.8
1.8 1.78
1.79 1.79
1.77 1.77
1.77
6.72
6.72 6.72
6.69 6.68
6.61 6.61
6.61 Blangko
2 1.8
1.8 1.79
1.79 1.78
1.76 1.77
1.77
6.72
6.72 6.69
6.69 6.68
6.61 6.61
6.61 3
1.8 1.79
1.79 1.79
1.78 1.77
1.77 1.77
6.72 6.69
6.69 6.69
6.68 6.61
6.61 6.61
Volume botol 311
311.8 307.7
292.1 301
300 300
282.7 1
1.82 1.8
1.74 1.5
1.49 1.46
1.42 1.36
6.8 6.72
6.5 5.6
5.57 5.45
5.38 5.23
Standar 1 ppm 2
1.81 1.8
1.74 1.5
1.5 1.46
1.42 1.36
6.76 6.72
6.5 5.6
5.57 5.45
5.38 5.23
3 1.81
1.78 1.73
1.5 1.5
1.46 1.42
1.36 6.76
6.68 6.46
5.6 5.57
5.45 5.38
5.23 Volume botol
300 304
308 306.4
299.5 300
300 300
1 1.82
1.78 1.74
1.55 1.52
1.33 1.26
1.2 6.8
6.65 6.5
5.79 5.68
4.97 4.71
3.73 Standar 2 ppm
2 1.82
1.79 1.76
1.56 1.52
1.34 1.25
1.1 6.8
6.69 6.57
5.82 5.68
5.01 4.67
3.73 3
1.8 1.79
1.74 1.55
1.53 1.34
1.26 1.1
6.72 6.69
6.5 5.79
5.71 5.01
4.71 3.73
Volume botol 302
300 300
301 285.5
300 300
300 1
1.81 1.78
1.75 1.57
1.55 1.48
1.45 1.41
6.76 6.65
6.54 5.86
5.79 5.53
5.41 5.23
OSD 1 ppm 2
1.81 1.78
1.75 1.56
1.54 1.49
2.45 1.42
6.76 6.65
6.54 5.83
5.75 5.57
5.41 5.3
3 1.81
1.78 1.75
1.56 1.54
1.48 1.47
1.42 6.76
6.65 6.54
5.83 5.75
5.53 5.49
5.3 Volume botol
310 307
317.1 316.5
300 302
300 300
1 1.81
1.79 1.75
1.58 1.55
1.35 1.2
1.1 6.76
6.68 6.54
5.9 5.79
5.04 4.48
4.11 OSD 2 ppm
2 1.81
1.79 1.76
1.58 1.55
1.36 1.2
1.2 6.76
6.68 6.57
5.9 5.79
5.08 4.48
4.11 3
1.81 1.8
1.76 1.6
1.56 1.36
1.2 1.1
6.76 6.72
6.57 5.97
5.82 5.04
4.48 4.11
Volume botol 300
309.9 274.8
300 300
311 302.6
300
24
Lampiran 12 lanjutan
Contoh perhitungan: Konsentrasi tiosulfat: 0.0235 N
Konsentrasi oksigen terlarut blangko hari ke-0, ulangan ke-1:
Vtio × Ntio × BE oksigen × 1000 DO =
———————————————— Vbotol × V sampel
Vbotol-2 1.8 × 0.0235 × 8 × 1000
= ————————————
50 × 311 311-2
= 6.80 mgL
Ulangan 1 Konsentrasi DO rerata mgL
BOD mgL Degradasi
Blangko Std 1 ppm
Std 2 ppm OSD 1
ppm OSD 2
ppm Std 1 ppm
Std 2 ppm OSD 1
ppm OSD 2
ppm Std 1 ppm
Std 2 ppm OSD 1
ppm OSD 2
ppm
6.81 6.77
6.8 6.75
6.76 6.79
6.7 6.67
6.68 6.71
0.05 0.11
0.05 0.03
3.01 3.31
3.01 0.9
6.8 6.51
6.47 6.56
6.58 0.25
0.32 0.18
0.17 15.06
9.64 10.84
5.12 6.76
5.81 5.83
5.86 5.95
0.91 0.92
0.84 0.76
54.82 27.71
50.6 22.89
6.72 5.61
5.7 5.8
5.84 1.07
1.01 0.86
0.83 64.46
30.42 51.81
25 6.69
5.5 4.9
5.6 4.72
1.15 1.78
1.03 1.92
69.28 53.61
62.05 57.83
6.68 5.38
4.48 5.43
4.48 1.26
2.19 1.19
2.15 75.9
65.96 71.69
64.76 6.68
5.13 3.73
5.23 3.81
1.51 2.94
1.39 2.82
90.96 88.55
83.73 84.53
24
Lampiran 12 lanjutan
Ulangan 2 Konsentrasi DO rerata mgL
BOD mgL Degradasi
Blangko Std 1 ppm
Std 2 ppm OSD 1
ppm OSD 2
ppm Std 1 ppm
Std 2 ppm OSD 1
ppm OSD 2
ppm Std 1 ppm
Std 2 ppm OSD 1
ppm OSD 2
ppm
6.72 6.77