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Рентгенофлуоресцентный анализ комплексных уран-ванадиевых руд месторождений Заонежского рудного узла

Рентгенофлуоресцентный анализ комплексных уран-ванадиевых руд месторождений Заонежского рудного узла

Abstract

В статье рассматривается применение рентгенофлуоресцентного анализа для определения урана и ванадия главных элементов комплексных месторождений Заонежского рудного узла. Обоснована экспрессная методика РФА на основе универсального уравнения способа стандарта рассеянного излучения (стандарта-фона), позволяющая анализировать все руды и вмещающие породы с широким диапазоном содержаний определяемых и мешающих элементов. Разработанная методика РФА применена для анализа руд и околорудных метасоматитов месторождений Средняя Падма, Космозерское и Весеннее. Показана устойчивость простых и универсальных аналитических уравнений, охватывающих весь диапазон содержаний урана и ванадия от пределов обнаружения до самых высоких содержаний, соответствующих практически мономинеральным рудам, а также высокая точность этой модификации РФА при использовании рентгеновского спектрометра в лаборатории геологического факультета СПбГУ.

The application of X-Ray fluorescent analysis for determination of uranium and vanadium which are major elements in "complex" deposits in Zaonega ore-cluster is considered. Express XRF analysis is based on a universal equation of a standard-scattered radiation method which allows to analyse ores and host rocks with a wide range of concentration of determined and the interfering elements. The developed XRF technique is applicable for the chemical analysis of ore and metasomatic wallrocks of Srednyaya Padma, Kosmozerskoe and Vesennee deposits. We have shown that simple and universal analytical equations can be applied for a wide range of element concentrations, from detection limit to very high element concentrations (nearly monomineralic ores). An advantage of the modified XRF analysis protocol is high precision in element determination.

Keywords

РЕНТГЕНОФЛУОРЕСЦЕНТНЫЙ АНАЛИЗ, СПОСОБ СТАНДАРТА-ФОНА, НЕКОГЕРЕНТНО РАССЕЯННОЕ ИЗЛУЧЕНИЕ, УДЕЛЬНАЯ ИНТЕСИВНОСТЬ РЕНТГЕНОВСКОЙ ФЛУОРЕСЦЕНЦИИ, УНИВЕРСАЛЬНОЕ УРАВНЕНИЕ, УРАН-ВАНАДИЕВЫЕ МЕСТОРОЖДЕНИЯ, ОКОЛОРУДНЫЕ МЕТАСОМАТИТЫ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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