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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Geochemical prospecting with the use of Laser-Induced Breakdown Spectrometryтезисы доклада
- Авторы: Labutin Timur A., Popov Andrey M., Zaytsev Sergey M., Kalko Ildar A., Zorov Nikita B.
- Сборник: The 8th International Conference on Laser-Induced Breakdown Spectroscopy
- Тезисы
- Год издания: 2014
- Место издания: Tsinghua University Beijing
- Первая страница: P-113
- Последняя страница: P-113
- Аннотация: Geochemical methods of ore deposits prospecting are widely used at all stages of exploration process due to their relatively low cost and high reliability. More than 300 mineral deposits , including copper-nickel , copper- porphyry , silver-ore and gold-ore deposits was found by geochemical exploration. Present-day analytical support of this process should provide rapid determination, preferably in the field, of a wide range elements from a single band-and-hook hinge in a large number of samples. Sensitivity of analytical method should be at the level of the mean abundance of the elements in the earth‘s crust . Only direct methods of analysis completely meet these requirements of , particularly laser- induced breakdown spectroscopy ( LIBS ) due to the ability of light and heavy elements analysis, a potential of miniaturization, and the relatively low cost of the final device. In this work we used laboratory LIBS setup, providing different combinations of evaporate laser harmonics for maximum sensitivity of elements - geochemical markers (copper, molybdenum , lead, silver) determination in soils and ores by LIBS . Obtained sensitivity allowed for the first time creation of geochemical maps of the silver, copper and lead distribution by the results of LIBS analysis. We used samples from the area of Nakhodka ore field (Western Chukchi Peninsula). Contour distributions of silver, copper and lead provided stable allocation of zones, presumably corresponding to the ore bodies. On the results of geochemical investigation we expected the development of silver ores within this area. Dynamic range of LIBS determination allows the successful localization of ore bodies unlike portable X-ray fluorescence analyzers.
- Добавил в систему: Попов Андрей Михайлович