Radionuclides
|
Radionuclide Concentration, Fly Ash, Bq/kg
|
|||
|
Element
|
Range
|
Weighted
average1
|
Exemption
Level2
|
|
226Ra
|
55 – 264
|
151
|
1,000
|
|
232Th
|
46 – 240
|
128
|
|
|
40K
|
105 – 628
|
303
|
10,000
|
|
Radionuclide Concentration, Bottom Ash, Bq/kg
|
|||
|
226Ra
|
28 – 237
|
113
|
1,000
|
|
232Th
|
20 – 212
|
96
|
|
|
40K
|
66 – 519
|
215
|
10,000
|
|
Radionuclide Concentration, Coal, Bq/kg
|
|||
|
226Ra
|
2 – 40
|
14
|
1,000
|
|
232Th
|
2 – 39
|
11
|
|
|
40K
|
5 – 93
|
33
|
10,000
|
1. Sum of multiplying the average for a given origin in the relative percent of coal and coal ash from that origin in a given year.
2. Material whose radionuclides concentrations meet these values, is exempted from regulatory control, according to IAEA (International Atomic Energy Agency Safety Guide No. RS-G-1.7, 2004.
Source: Measurements done in Soreq-NRC (Nuclear Research Center) for NCAB’ coal and coal ash samples of individual sources (coal mines).
Radionuclides Concentrations (Bq/kg), 2018
|
Fly Ash
|
||||||||||
|
Country
|
South Africa
|
Colombia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||
|
Element
|
Value
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
207 | 77 | 94 | 106 | 109 | 111 | 113 | 77-207 | 115 | 45 |
|
232Th
|
190 | 45 | 59 | 71 | 60 | 63 | 67 | 45-190 | 77 | 53 |
|
40K
|
221 | 360 | 482 | 557 | 476 | 477 | 478 | 221-557 | 431 | 126 |
|
Bottom Ash
|
||||||||||
|
226Ra
|
146 | 50 | 66 | 80 | 81 | 96 | 111 | 50-146 | 89 | 34 |
|
232Th
|
122 | 31 | 44 | 54 | 51 | 58 | 65 | 31-122 | 60 | 31 |
|
40K
|
193 | 231 | 357 | 441 | 369 | 400 | 432 | 193-441 | 356 | 106 |
|
Coal
|
||||||||||
|
226Ra
|
33 | 7 | 8 | 11 | 8 | 10 | 13 | 7-33 | 11 | 10 |
|
232Th
|
32 | 3 | 5 | 6 | 7 | 8 | 8 | 3-32 | 10 | 10 |
|
40K
|
17 | 31 | 40 | 57 | 40 | 46 | 51 | 17-57 | 38 | 14 |
Radionuclides Concentrations (Bq/kg), 2017
|
Fly Ash
|
||||||||||||
|
Country
|
South Africa
|
Colombia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
219 | 223 | 227 | 82 | 90 | 104 | 99 | 100 | 101 | 82-227 | 120 | 63 |
|
232Th
|
197 | 202 | 207 | 54 | 63 | 77 | 70 | 72 | 75 | 54-207 | 93 | 67 |
|
40K
|
138 | 166 | 194 | 358 | 467 | 534 | 516 | 531 | 546 | 138-546 | 435 | 172 |
|
Bottom Ash
|
||||||||||||
|
226Ra
|
170 | 178 | 187 | 28 | 55 | 98 | 76 | 79 | 82 | 28-187 | 88 | 61 |
|
232Th
|
154 | 162 | 170 | 20 | 39 | 74 | 56 | 60 | 63 | 20-170 | 71 | 59 |
|
40K
|
77 | 86 | 95 | 168 | 242 | 295 | 406 | 446 | 487 | 77-487 | 293 | 155 |
|
Coal
|
||||||||||||
|
226Ra
|
33 | 34 | 35 | 7 | 8 | 11 | 10 | 12 | 15 | 7-35 | 13 | 12 |
|
232Th
|
32 | 33 | 34 | 4 | 6 | 7 | 7 | 8 | 9 | 4-34 | 10 | 13 |
|
40K
|
16 | 16 | 16 | 29 | 57 | 83 | 64 | 72 | 79 | 16-83 | 57 | 29 |
Radionuclides Concentrations (Bq/kg), 2016
|
Fly Ash
|
||||||||||
|
Country
|
South Africa
|
Colombia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||
|
Element
|
Value
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
228 | 84 | 88 | 96 | 137 | 140 | 143 | 84-228 | 136 | 53 |
|
232Th
|
205 | 50 | 53 | 58 | 64 | 71 | 78 | 50-205 | 93 | 56 |
|
40K
|
133 | 392 | 437 | 492 | 418 | 459 | 500 | 133-500 | 376 | 126 |
|
Bottom Ash
|
||||||||||
|
226Ra
|
173 | 57 | 64 | 70 | 165 | 57-173 | 121 | 57 | ||
|
232Th
|
160 | 34 | 40 | 48 | 77 | 34-160 | 79 | 52 | ||
|
40K
|
115 | 285 | 326 | 371 | 406 | 115-406 | 305 | 113 | ||
|
Coal
|
||||||||||
|
226Ra
|
36 | 6 | 7 | 8 | 15 | 15 | 15 | 6-36 | 14 | 11 |
|
232Th
|
32 | 3 | 5 | 6 | 7 | 8 | 8 | 3-32 | 10 | 10 |
|
40K
|
17 | 31 | 40 | 57 | 40 | 46 | 51 | 17-57 | 38 | 14 |
Radionuclides Concentrations (Bq/kg), 2015
|
Fly Ash
|
|||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Value
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
186 | 221 | 256 | 86 | 104 | 140 | 99 | 109 | 135 | 161 | 86-256 | 148 | 57 |
|
232Th
|
175 | 201 | 227 | 50 | 75 | 119 | 97 | 76 | 103 | 131 | 50-227 | 122 | 59 |
|
40K
|
136 | 142 | 147 | 384 | 436 | 495 | 139 | 386 | 474 | 563 | 136-563 | 342 | 164 |
|
Bottom Ash
|
|||||||||||||
|
226Ra
|
196 | 207 | 218 | 62 | 81 | 103 | 86 | 59 | 75 | 91 | 59-218 | 117 | 61 |
|
232Th
|
170 | 191 | 212 | 37 | 59 | 81 | 81 | 40 | 52 | 64 | 37-212 | 95 | 64 |
|
40K
|
86 | 98 | 109 | 145 | 299 | 465 | 145 | 373 | 446 | 519 | 86-519 | 271 | 153 |
|
Coal
|
|||||||||||||
|
226Ra
|
25 | 27 | 30 | 5 | 6 | 8 | 13 | 11 | 13 | 16 | 5-30 | 13 | 9 |
|
232Th
|
26 | 27 | 28 | 4 | 5 | 8 | 13 | 8 | 9 | 10 | 4-28 | 11 | 9 |
|
40K
|
17 | 19 | 21 | 26 | 47 | 70 | 22 | 25 | 59 | 93 | 17-93 | 42 | 26 |
Radionuclides Concentrations (Bq/kg), 2014
|
Fly Ash
|
|||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Value
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
191 | 228 | 264 | 82 | 104 | 151 | 103 | 119 | 122 | 124 | 82-264 | 150 | 57 |
|
232Th
|
176 | 208 | 240 | 48 | 68 | 121 | 100 | 75 | 76 | 77 | 49-240 | 118 | 63 |
|
40K
|
171 | 182 | 193 | 283 | 401 | 606 | 214 | 509 | 528 | 548 | 171-606 | 355 | 153 |
|
Bottom Ash
|
|||||||||||||
|
226Ra
|
153 | 195 | 237 | 57 | 62 | 76 | 79 | 67 | 79 | 91 | 57-237 | 111 | 58 |
|
232Th
|
138 | 172 | 207 | 34 | 38 | 44 | 79 | 43 | 52 | 62 | 34-207 | 87 | 57 |
|
40K
|
99 | 118 | 138 | 202 | 297 | 411 | 175 | 225 | 321 | 418 | 99-418 | 241 | 108 |
|
Coal
|
|||||||||||||
|
226Ra
|
25 | 31 | 37 | 4 | 6 | 9 | 15 | 10 | 10 | 11 | 4-37 | 13 | 11 |
|
232Th
|
23 | 28 | 33 | 3 | 4 | 6 | 14 | 6 | 7 | 7 | 3-33 | 10 | 10 |
|
40K
|
11 | 18 | 24 | 14 | 34 | 74 | 23 | 38 | 44 | 50 | 11-74 | 32 | 19 |
Radionuclides Concentrations (Bq/kg), 2013
|
Fly Ash
|
|||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Value
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
186 | 206 | 219 | 78 | 87 | 104 | 90 | 85 | 111 | 137 | 78-219 | 139 | 55 |
|
232Th
|
170 | 182 | 215 | 47 | 54 | 77 | 93 | 60 | 67 | 75 | 47-215 | 111 | 61 |
|
40K
|
130 | 175 | 204 | 350 | 416 | 462 | 209 | 463 | 483 | 503 | 130-503 | 320 | 136 |
|
Bottom Ash
|
|||||||||||||
|
226Ra
|
145 | 177 | 201 | 45 | 56 | 63 | 70 | 70 | 88 | 106 | 45-201 | 114 | 59 |
|
232Th
|
134 | 159 | 190 | 28 | 33 | 37 | 67 | 54 | 59 | 64 | 28-190 | 93 | 59 |
|
40K
|
116 | 123 | 134 | 185 | 271 | 354 | 147 | 403 | 420 | 436 | 116-436 | 234 | 116 |
|
Coal
|
|||||||||||||
|
226Ra
|
6 | 23 | 32 | 4 | 6 | 7 | 15 | 11 | 12 | 13 | 4-32 | 13 | 10 |
|
232Th
|
6 | 22 | 33 | 3 | 4 | 5 | 12 | 6 | 7 | 8 | 3-33 | 11 | 11 |
|
40K
|
5 | 16 | 23 | 21 | 33 | 50 | 37 | 39 | 65 | 91 | 5-91 | 35 | 21 |
Radionuclides Concentrations (Bq/kg), 2012
|
Fly Ash
|
||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Indonesia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Value
|
Value
|
Value
|
|||
|
226Ra
|
193 | 213 | 232 | 82 | 95 | 100 | 93 | 76 | 129 | 76-232 | 153 | 57 |
|
232Th
|
178 | 191 | 217 | 52 | 65 | 73 | 92 | 47 | 106 | 47-217 | 129 | 59 |
|
40K
|
123 | 172 | 238 | 372 | 401 | 457 | 210 | 400 | 383 | 123-457 | 286 | 116 |
|
Bottom Ash
|
||||||||||||
|
226Ra
|
144 | 170 | 186 | 50 | 57 | 74 | 88 | n.d | 84 | 50-186 | 115 | 52 |
|
232Th
|
135 | 156 | 170 | 35 | 45 | 43 | 85 | n.d | 58 | 35-170 | 97 | 55 |
|
40K
|
80 | 94 | 114 | 244 | 247 | 349 | 179 | n.d | 460 | 80-460 | 263 | 122 |
|
Coal
|
||||||||||||
|
226Ra
|
30 | 33 | 36 | 5 | 7 | 8 | 15 | 4 | 13 | 4-36 | 17 | 12 |
|
232Th
|
29 | 34 | 38 | 2 | 4 | 5 | 13 | 2 | 7 | 2-38 | 15 | 14 |
|
40K
|
17 | 17 | 17 | 14 | 30 | 57 | 17 | <15 | 56 | 14-57 | 30 | 16 |
Radionuclides Concentrations (Bq/kg), 2011
|
Fly Ash
|
||||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Indonesia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||
|
Element
|
Value
|
Min
|
Ave
|
Max
|
Value
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
216
|
81
|
92
|
101
|
94
|
58
|
60
|
62
|
114
|
134
|
153
|
58-216
|
141
|
45 |
|
232Th
|
207
|
46
|
54
|
74
|
92
|
53
|
54
|
54
|
72
|
74
|
76
|
46-207
|
115
|
46 |
|
40K
|
147
|
251
|
432
|
513
|
117
|
488
|
489
|
489
|
464
|
470
|
475
|
117-513
|
319
|
148 |
|
Bottom Ash
|
||||||||||||||
|
226Ra
|
188
|
56
|
65
|
84
|
70
|
46
|
46
|
47
|
71
|
75
|
80
|
46-188
|
110
|
40 |
|
232Th
|
167
|
33
|
38
|
51
|
63
|
42
|
42
|
42
|
35
|
43
|
51
|
33-167
|
87
|
39 |
|
40K
|
102
|
167
|
283
|
368
|
97
|
365
|
370
|
375
|
180
|
274
|
368
|
97-375
|
211
|
111 |
|
Coal
|
||||||||||||||
|
226Ra
|
33
|
5
|
7
|
10
|
16
|
3
|
4
|
4
|
13
|
13
|
13
|
3-33
|
15
|
9 |
|
232Th
|
32
|
3
|
4
|
6
|
12
|
3
|
3
|
3
|
6
|
7
|
7
|
3-32
|
12
|
8 |
|
40K
|
24
|
18
|
41
|
74
|
17
|
26
|
33
|
40
|
45
|
50
|
56
|
17-74
|
36
|
19 |
Radionuclides Concentrations (Bq/kg), 2010
|
Fly Ash
|
||||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Indonesia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||
|
Element
|
Value
|
Min
|
Ave
|
Max
|
Value
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
203
|
82
|
89
|
101
|
99
|
58
|
61
|
63
|
100
|
119
|
138
|
58-203
|
132
|
42 |
|
232Th
|
199
|
47
|
56
|
65
|
93
|
48
|
52
|
55
|
74
|
88
|
115
|
48-199
|
114
|
46 |
|
40K
|
142
|
250
|
416
|
516
|
139
|
385
|
447
|
509
|
400
|
436
|
484
|
139-516
|
309
|
145 |
|
Bottom Ash
|
||||||||||||||
|
226Ra
|
155
|
58
|
66
|
81
|
69
|
37
|
42
|
47
|
86
|
87
|
88
|
37-155
|
98
|
35 |
|
232Th
|
137
|
35
|
40
|
44
|
67
|
29
|
38
|
47
|
60
|
63
|
65
|
29-137
|
80
|
33 |
|
40K
|
112
|
170
|
329
|
439
|
104
|
231
|
297
|
364
|
387
|
394
|
402
|
112-439
|
245
|
132 |
|
Coal
|
||||||||||||||
|
226Ra
|
33
|
5
|
7
|
9
|
13
|
3
|
3
|
4
|
10
|
11
|
13
|
3-33
|
13
|
9 |
|
232Th
|
3
|
3
|
4
|
4
|
12
|
2
|
2
|
3
|
7
|
8
|
8
|
2-12
|
4
|
3 |
|
40K
|
20
|
14
|
28
|
42
|
17
|
16
|
22
|
27
|
39
|
45
|
52
|
14-52
|
27
|
14 |
Radionuclides Concentrations (Bq/kg), 2009
|
Fly Ash
|
||||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Indonesia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Value
|
Value
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
179
|
193
|
220
|
87
|
89
|
91
|
88
|
55
|
101
|
101
|
102
|
55-220
|
133
|
56
|
|
232Th
|
154
|
171
|
198
|
49
|
58
|
67
|
84
|
55
|
74
|
79
|
84
|
49-198
|
114
|
54
|
|
40K
|
133
|
178
|
206
|
337
|
394
|
451
|
198
|
463
|
401
|
428
|
456
|
133-463
|
301
|
133
|
|
Bottom Ash
|
||||||||||||||
|
226Ra
|
89
|
133
|
183
|
53
|
66
|
79
|
80
|
n.d
|
71
|
78
|
85
|
53-183
|
109
|
40
|
|
232Th
|
80
|
117
|
154
|
36
|
52
|
67
|
80
|
n.d
|
50
|
63
|
77
|
36-154
|
96
|
38
|
|
40K
|
66
|
93
|
114
|
278
|
325
|
372
|
108
|
n.d
|
224
|
253
|
282
|
66-372
|
181
|
105
|
|
Coal
|
||||||||||||||
|
226Ra
|
25
|
29
|
30
|
6
|
7
|
8
|
13
|
5
|
11
|
12
|
12
|
5-30
|
15
|
10
|
|
232Th
|
22
|
24
|
25
|
3
|
4
|
4
|
12
|
5
|
7
|
8
|
9
|
3-25
|
12
|
9
|
|
40K
|
21
|
22
|
24
|
31
|
31
|
31
|
14
|
39
|
35
|
45
|
54
|
14-54
|
32
|
12
|
Radionuclides Concentrations (Bq/kg), 2008
|
Fly Ash
|
|||||||||||||||||
|
Country
|
South Africa
|
Colombia
|
Aus.
|
Indonesia
|
Can.
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Val
|
Min
|
Ave
|
Max
|
Val
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
215
|
218
|
221
|
84
|
90
|
97
|
109
|
76
|
84
|
93
|
178
|
101
|
103
|
104
|
76-221
|
159
|
7 |
|
232Th
|
210
|
222
|
233
|
61
|
67
|
73
|
101
|
64
|
77
|
90
|
106
|
73
|
76
|
78
|
61-233
|
152
|
13 |
|
40K
|
142
|
166
|
190
|
258
|
379
|
501
|
153
|
364
|
388
|
413
|
337
|
264
|
403
|
542
|
142-542
|
258
|
165 |
|
Bottom Ash
|
|||||||||||||||||
|
226Ra
|
167
|
173
|
180
|
49
|
51
|
52
|
77
|
65
|
155
|
n.d
|
n.d
|
n.d
|
49-180
|
119
|
58 | ||
|
232Th
|
146
|
159
|
172
|
37
|
38
|
40
|
75
|
66
|
102
|
n.d
|
n.d
|
n.d
|
37-172
|
108
|
52 | ||
|
40K
|
116
|
123
|
130
|
238
|
296
|
354
|
129
|
317
|
283
|
n.d
|
n.d
|
n.d
|
116-354
|
186
|
99 | ||
|
Coal
|
|||||||||||||||||
|
226Ra
|
31
|
36
|
40
|
4
|
6
|
8
|
11
|
2
|
16
|
7
|
2-40
|
15
|
14 | ||||
|
232Th
|
30
|
34
|
39
|
3
|
4
|
4
|
11
|
4
|
10
|
7
|
3-39
|
15
|
13 | ||||
|
40K
|
21
|
21
|
22
|
23
|
32
|
42
|
12
|
12
|
25
|
13
|
12-42
|
19
|
10 | ||||
Radionuclides Concentrations (Bq/kg), 2007
|
Fly Ash
|
||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Indonesia
|
Russia
|
Range
|
Weighted
average |
Stdev
|
||||
|
Element
|
Min
|
Ave
|
Max
|
Value
|
Value
|
Value
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
205
|
205
|
206
|
122
|
n.d
|
142
|
104
|
129
|
153
|
104-206
|
173
|
42 |
|
232Th
|
189
|
189
|
189
|
89
|
n.d
|
128
|
77
|
94
|
111
|
77-189
|
152
|
48 |
|
40K
|
148
|
188
|
227
|
536
|
n.d
|
105
|
264
|
370
|
476
|
105-536
|
250
|
175 |
|
Bottom Ash
|
||||||||||||
|
226Ra
|
148
|
n.d
|
n.d
|
n.d
|
74
|
92
|
109
|
74-148
|
141
|
37 | ||
|
232Th
|
143
|
n.d
|
n.d
|
n.d
|
55
|
74
|
93
|
55-143
|
135
|
44 | ||
|
40K
|
120
|
n.d
|
n.d
|
n.d
|
260
|
303
|
346
|
120-346
|
141
|
114 | ||
Radionuclides Concentrations (Bq/kg), 2006
|
Fly Ash
|
||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Indonesia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Value
|
Value
|
Value
|
|||
|
226Ra
|
207
|
230
|
251
|
101
|
136
|
159
|
n.d
|
97
|
126
|
101-251
|
181
|
59 |
|
232Th
|
190
|
208
|
239
|
60
|
102
|
132
|
n.d
|
95
|
76
|
60-239
|
156
|
64 |
|
40K
|
154
|
175
|
210
|
301
|
450
|
628
|
n.d
|
510
|
448
|
154-628
|
305
|
174 |
|
Bottom Ash
|
||||||||||||
|
226Ra
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d |
|
232Th
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d |
|
40K
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d |
Radionuclides Concentrations (Bq/kg), 2005
|
Fly Ash
|
||||||||||||||
|
Country
|
South Africa
|
Colombia
|
Australia
|
Indonesia
|
Russia
|
Range
|
Weighted
average
|
Stdev
|
||||||
|
Element
|
Min
|
Ave
|
Max
|
Min
|
Ave
|
Max
|
Value
|
Value
|
Min
|
Ave
|
Max
|
|||
|
226Ra
|
98
|
181
|
234
|
97
|
116
|
135
|
n.d
|
109
|
n.d
|
n.d
|
n.d
|
97-234
|
159
|
60 |
|
232Th
|
56
|
159
|
218
|
64
|
83
|
102
|
n.d
|
111
|
n.d
|
n.d
|
n.d
|
56-218
|
137
|
70 |
|
40K
|
144
|
220
|
368
|
373
|
389
|
404
|
n.d
|
223
|
n.d
|
n.d
|
n.d
|
144-404
|
258
|
119 |
|
Bottom Ash
|
||||||||||||||
|
226Ra
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d |
|
232Th
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d |
|
40K
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d
|
n.d |
* n.d- no data.
* Average- sum of the values of coal (from 2008 and on) or coal ash from various source (coal mines) per origin (country), divided in the number of sources.
* Weighted average- sum of multiplying the average for a given origin in the relative percent of coal or coal ash from that origin in a given year.