112
Tableau N°11 : Activités spécifiques en unité de masse des différents radioéléments d’intérêt dans la carotte de sédiment
Couche
Activités massiques (Bq/kg)
210 Pb
238 U
212 Pb
214 Pb
214 Bi
137 Cs
228 Ac
40 K
226 Ra
210 Pb en excès
(0-1cm)
320.09±16.46
84.20±4.60 34.26±1.78 24.96±1.38 20.73±1.22 53.73±2.80 29.52±1.98 600.17±32.67 22.85±1.3
297.25±15.16
(1-2 cm)
498.83 ±25.46
84.36±4.66 54.57±2.81 42.55±2.28 37.38±2.09 8.35±0.54 44.77±2.83 984.56±52.30 39.97±2.18 458.86±23.27
(2-3 cm)
288.61±14.76
48.15±2.68 34.07±1.75 26.33±1.41 19.39±1.11 2.55±0.20 29.38±1.85 604.57±32.18 22.86±1.26 265.75±13.5
(3-4 cm)
264.62±13.50
46.25±2.54 32.7±1.68 27.03±1.43 22.77±1.25 5.30±0.33 27.93±1.71 631.19±33.17 24.90±1.34 239.72±12.16
(4-5 cm)
218.53±11.22
51.71±2.83 34.88±1.79 28.86±1.79 24.85±1.37 3.45±0.24 31.38±1.91 621.38±32.80 26.85±1.58 191.68±9.64
(5-6 cm)
179.27±9.22
46.84±2.56 32.38±1.66 25.50±1.35 21.80±1.20 2.78±0.19 31.44±1.87 620.83±32.55 23.65±1.27 155.62±7.94
(6-7 cm)
145.37±7.57
54.69±2.99 37.72±1.93 28.26±1.50 25.64±1.41 1.68±0.14 35.64±2.14 716.62±37.7 26.95±1.45 118.42±6.11
(7-8 cm)
125.29±6.56
43.95±2.45 33.35±1.71 27.38±1.46 22.90±1.27 1.31±0.12 31.00±1.90 649.40±34.26 25.14±1.36 100.15±5.19
(8-9 cm)
89.67±4.72
46.46±2.53 36.87±1.88 27.66±1.45 21.70±1.19 0.79±0.08 34.15±1.99 689.77±35.91 24.68±1.32 64.99±3.4
(9-10 cm) 66.04±3.55
43.79±2.40 37.74±1.93 28.90±1.52 24.55±1.34 0.27±0.04 36.55±2.13 707.80±36.90 26.73±1.43 39.32±2.12
(10-11 cm) 63.46±3.53
50.64±2.84 38.23±1.97 27.64±1.49 24.14±1.36 ND
38.48±2.35 741.02±39.22 25.89±1.42 37.56±2.10
(11-12 cm) 50.58±2.89
37.49±2.19 33.62±1.74 23.77±1.30 20.95±1.21 ND
42.85±2.59 645.84±34.53 22.36±1.25 28.22±1.63
(12-13 cm) 60.02±3.31
46.40±2.59 40.30±2.06 28.50±1.52 24.70±1.37 ND
38.31±2.29 662.97±35.04 26.6±1.44
33.41±1.86
(13-14 cm) 54.54±3.04
45.04±2.52 37±1.90
25.60±1.37 21.41±1.21 ND
37.32±2.24 649.92±34.39 23.5±1.29
31.04±1.75
(14-16 cm) 48.33±2.63
42.2±2.29 37.45±1.90 27.35±1.43 20.63±1.12 ND
35.51±2.03 633.30±32.93 23.99±1.27 24.34±1.35
(16-18 cm) 46.86±2.49
36.71±1.96 37±1.87
25.26±1.30 21.26±1.30 ND
35.63±1.95 622.56±31.96 23.26±1.3
23.60±1.19
(18-20 cm) 35.97±1.94
36.20±1.93 31.45±1.59 22.64±1.17 18.34±0.98 ND
33.10±1.83 576.30±29.66 20.49±1.075 15.48±0.86
(20-22 cm) 40.68±2.16
39.83±2.09 36.31±1.83 23.84±1.23 20.29±1.07 ND
34.18±1.85 606.81±31.05 22.07±1.15 18.61±1.01
(22-24 cm) 36.37±1.96
39.04±2.07 35.06±1.77 25.32±1.31 20.77±1.10 ND
35.77±1.95 635.86±32.59 23.05±1.20 13.32±0.75
(24-26 cm) 39.32±2.17
38.90±2.11 34.19±1.74 24.48±1.28 20.97±1.13 ND
30.96±1.78 582.60±30.28 22.72±1.20 16.59±0.96
(26-28 cm) 32.46±1.85
40.52±2.23 35.09±1.79 23.87±1.26 20.84±1.14 ND
37.48±2.15 609.35±31.86 22.36±1.2
10.10±0.65
ND : non détecté
Tableau N°11 : Activités spécifiques en unité de masse des différents radioéléments d’intérêt dans la carotte de sédiment
Couche
Activités massiques (Bq/kg)
210 Pb
238 U
212 Pb
214 Pb
214 Bi
137 Cs
228 Ac
40 K
226 Ra
210 Pb en excès
(0-1cm)
320.09±16.46
84.20±4.60 34.26±1.78 24.96±1.38 20.73±1.22 53.73±2.80 29.52±1.98 600.17±32.67 22.85±1.3
297.25±15.16
(1-2 cm)
498.83 ±25.46
84.36±4.66 54.57±2.81 42.55±2.28 37.38±2.09 8.35±0.54 44.77±2.83 984.56±52.30 39.97±2.18 458.86±23.27
(2-3 cm)
288.61±14.76
48.15±2.68 34.07±1.75 26.33±1.41 19.39±1.11 2.55±0.20 29.38±1.85 604.57±32.18 22.86±1.26 265.75±13.5
(3-4 cm)
264.62±13.50
46.25±2.54 32.7±1.68 27.03±1.43 22.77±1.25 5.30±0.33 27.93±1.71 631.19±33.17 24.90±1.34 239.72±12.16
(4-5 cm)
218.53±11.22
51.71±2.83 34.88±1.79 28.86±1.79 24.85±1.37 3.45±0.24 31.38±1.91 621.38±32.80 26.85±1.58 191.68±9.64
(5-6 cm)
179.27±9.22
46.84±2.56 32.38±1.66 25.50±1.35 21.80±1.20 2.78±0.19 31.44±1.87 620.83±32.55 23.65±1.27 155.62±7.94
(6-7 cm)
145.37±7.57
54.69±2.99 37.72±1.93 28.26±1.50 25.64±1.41 1.68±0.14 35.64±2.14 716.62±37.7 26.95±1.45 118.42±6.11
(7-8 cm)
125.29±6.56
43.95±2.45 33.35±1.71 27.38±1.46 22.90±1.27 1.31±0.12 31.00±1.90 649.40±34.26 25.14±1.36 100.15±5.19
(8-9 cm)
89.67±4.72
46.46±2.53 36.87±1.88 27.66±1.45 21.70±1.19 0.79±0.08 34.15±1.99 689.77±35.91 24.68±1.32 64.99±3.4
(9-10 cm) 66.04±3.55
43.79±2.40 37.74±1.93 28.90±1.52 24.55±1.34 0.27±0.04 36.55±2.13 707.80±36.90 26.73±1.43 39.32±2.12
(10-11 cm) 63.46±3.53
50.64±2.84 38.23±1.97 27.64±1.49 24.14±1.36 ND
38.48±2.35 741.02±39.22 25.89±1.42 37.56±2.10
(11-12 cm) 50.58±2.89
37.49±2.19 33.62±1.74 23.77±1.30 20.95±1.21 ND
42.85±2.59 645.84±34.53 22.36±1.25 28.22±1.63
(12-13 cm) 60.02±3.31
46.40±2.59 40.30±2.06 28.50±1.52 24.70±1.37 ND
38.31±2.29 662.97±35.04 26.6±1.44
33.41±1.86
(13-14 cm) 54.54±3.04
45.04±2.52 37±1.90
25.60±1.37 21.41±1.21 ND
37.32±2.24 649.92±34.39 23.5±1.29
31.04±1.75
(14-16 cm) 48.33±2.63
42.2±2.29 37.45±1.90 27.35±1.43 20.63±1.12 ND
35.51±2.03 633.30±32.93 23.99±1.27 24.34±1.35
(16-18 cm) 46.86±2.49
36.71±1.96 37±1.87
25.26±1.30 21.26±1.30 ND
35.63±1.95 622.56±31.96 23.26±1.3
23.60±1.19
(18-20 cm) 35.97±1.94
36.20±1.93 31.45±1.59 22.64±1.17 18.34±0.98 ND
33.10±1.83 576.30±29.66 20.49±1.075 15.48±0.86
(20-22 cm) 40.68±2.16
39.83±2.09 36.31±1.83 23.84±1.23 20.29±1.07 ND
34.18±1.85 606.81±31.05 22.07±1.15 18.61±1.01
(22-24 cm) 36.37±1.96
39.04±2.07 35.06±1.77 25.32±1.31 20.77±1.10 ND
35.77±1.95 635.86±32.59 23.05±1.20 13.32±0.75
(24-26 cm) 39.32±2.17
38.90±2.11 34.19±1.74 24.48±1.28 20.97±1.13 ND
30.96±1.78 582.60±30.28 22.72±1.20 16.59±0.96
(26-28 cm) 32.46±1.85
40.52±2.23 35.09±1.79 23.87±1.26 20.84±1.14 ND
37.48±2.15 609.35±31.86 22.36±1.2
10.10±0.65
ND : non détecté