1985
DOI: 10.1002/xrs.1300140205
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Some experience in using the MECA‐10‐44 (XR‐500) x‐ray fluorescence analyser for solving geological problems

Abstract: The excitation conditions have been studied and the accuracy and sensitivity estimated of the MECA‐10‐44 energy‐dispersive x‐ray fluorescence spectrometer, in the determination of contents of 10 major and 25–30 rare and scattered elements in samples of rocks and ores. The use of the instrument for the rapid routine analysis of geological samples for separate groups of elements has been demonstrated; when carrying out combined geochemical investigations, such an instrument represents an essential link in the sy… Show more

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Cited by 8 publications
(4 citation statements)
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“…Rare-earth elements (REE) in geologic materials were analyzed by Lagarde and Larcher (284) who utilized 241 Am to excite the K lines of the REE, achieving analytical sensitivity in the Mg/g range on pressed-powder pellets. Margolin et al (285) summarized the use of a MECA-10-44 (XR-500) EDXRF for the determination of 10 major and 25-30 rare-earth and other elements in rocks and ores. Samples were prepared as pressed pellets (<20 nm particle size) using 8% phenolformaldehyde as a binding agent, followed by heating for 3 h in an oven at 120-150 °C.…”
Section: X-ray Fluorescence Spectometrymentioning
confidence: 99%
“…Rare-earth elements (REE) in geologic materials were analyzed by Lagarde and Larcher (284) who utilized 241 Am to excite the K lines of the REE, achieving analytical sensitivity in the Mg/g range on pressed-powder pellets. Margolin et al (285) summarized the use of a MECA-10-44 (XR-500) EDXRF for the determination of 10 major and 25-30 rare-earth and other elements in rocks and ores. Samples were prepared as pressed pellets (<20 nm particle size) using 8% phenolformaldehyde as a binding agent, followed by heating for 3 h in an oven at 120-150 °C.…”
Section: X-ray Fluorescence Spectometrymentioning
confidence: 99%
“…The methods used to determine Cs and Ta in geological materials are generally expensive and time‐consuming. The X‐ray fluorescence (XRF) analysis of rare earth objects has great potential, can play a significant role in the rare earth industry, and has a wide application prospect …”
Section: Introductionmentioning
confidence: 99%
“…Оценка аналитических возможностей спек-трометра с энергетической дисперсией МЕКА-10-44 выполнена в обстоятельной работе [2]. Автора-ми выбраны оптимальные условия возбуждения, обеспечивающие минимальную границу обнару-жения для большого числа элементов в горных породах и рудах.…”
unclassified
“…Для этих элементов оптимальным выбрано воз-буждение излучением радиоизотопа Am 241 , кото-рый помещали в одно из двух гнёзд для фильтров. К сожалению, в [2] нет информации о полученных пределах обнаружения для рассматриваемых в настоящей работе элементов (для 48 Cd и 50 Sn пределы оказались равными 10 и 30 ppm). Тем не менее, отмечено, что для Ba и Ce в диапазоне со-держаний от 5 до 19 ppm относительное стандарт-ное отклонение составило 20 %.…”
unclassified