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| 005 | 20231030033637.0 | ||
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| 100 | _a20100524a2005 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aDE | ||
| 200 | 1 |
_aRadioactive elements in paleozoic coals of Siberia _fS. I. Arbuzov [et al.] |
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| 330 | _aThe geochemistry of radioactive elements was examined in the Kuznetsk, Minusinsk, Tunguska, and Gorlovo Paleozoic coal basins in Siberia. Quantitative analytical techniques (INAA, delayed neutron analysis, and XRF) were used to study 2600 samples of coals and their host rocks. The average U and Th concentrations in the coals are 2 and 3 ppm, respectively. The lateral and vertical variability of the distribution of radioactive elements was examined on the scale of coal basins, deposits, and individual coal seams. It was deterinined that elevated U and Th concentrations in coals are often related to rock blocks enriched in radioactive elements in the surroundings of the basins or are correlated with volcanic activity during coal accumulation. High concentrations of these elements in coal seams are restricted to zones near the tops of the seams and the soil zones, the boundaries of partings, or to beds enriched in pyroclastic material. Using the f-radiography method, it was determined that the main mechanism of U accumulation in coals is its sorption on the organic matter. Thorium is contained in both the mineral and the organic constituents of coals. An increase in the ash contents of coals with clarke radioactivity is associated with an increase in the contents of U and Th in the mineral matter. | ||
| 333 | _aВ фонде НТБ ТПУ отсутствует | ||
| 461 |
_tGeochemistry International _d1956- |
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| 463 |
_tVol. 43, iss. 5 _vP. 478-492 _d2005 |
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| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aArbuzov _bS. I. _cRussian geologist and geochemist _cProfessor of Tomsk Polytechnic University, Doctor of geological and mineralogical sciences _f1959- _gSergey Ivanovich _2stltpush _3(RuTPU)RU\TPU\pers\29713 _4070 |
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| 701 | 1 |
_aRikhvanov _bL. P. _cProfessor of Tomsk Polytechnic University _cDoctor of geological- mineralogical sciences _cHonored geologist of Russia _cHonored employee of higher vocational education of the Russian Federation _f1945- _gLeonid Petrovich _xTPU _2stltpush _3(RuTPU)RU\TPU\pers\25922 |
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| 701 | 1 |
_aVolostnov _bA. V. |
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| 701 | 1 |
_aVarlachev _bV. A. |
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| 801 | 1 |
_aRU _b63413507 _c20100524 |
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| 801 | 2 |
_aRU _b63413507 _c20140329 _gRCR |
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| 942 | _cBK | ||