litosphereЛитосфераLITHOSPHERE (Russia)1681-90042500-302XA.N. Zavaritsky Institute of Geology and Geochemistry10.24930/1681-9004-2021-21-5-712-723litosphere-1487Research ArticleСтатьиArticlesК методике определения изотопного состава Sm/Nd и Sr на ICP-MS Neptune Plus с LA приставкой NWR 213Determination of Sm/Nd and Sr isotopic composition using an ICP-MS Neptune Plus equipped with an NWR 213 attachment for laser ablationЧервяковскаяМ. В.ChervyakovskayaM. V.

  620110, г. Екатеринбург, ул. Акад. Вонсовского, 15

  15 Akad. Vonsovskogo st., Ekaterinburg 620110 

zaitseva.mv1991@gmail.comЧервяковскийВ. С.ChervyakovskiyV. S.

620110, г. Екатеринбург, ул. Акад. Вонсовского, 15

  15 Akad. Vonsovskogo st., Ekaterinburg 620110 

Институт геологии и геохимии УрО РАНРоссияA.N. Zavaritsky Institute of Geology and Geochemistry uB RASRussian Federation202131102021215712723Copyright © Червяковская М.В., Червяковский В.С., 20212021Червяковская М.В., Червяковский В.С.Chervyakovskaya M.V., Chervyakovskiy V.S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.lithosphere.ru/jour/article/view/1487Объект исследования

Объект исследования. Изотопная система Sm/Nd в ряде межлабораторных природных образцов апатита, титанита, алланита, монацита и во внутрилабораторных пробах апатита (из карбонатитов Ильменогорского массива, Южный Урал), монацита (из пегматитов Адуйского гранитного массива и его обрамления, Средний Урал) и титанита (из кальцитовых жил Сарановского месторождения хромита, Средний Урал, и из щелочного пегматита рудника Шпат, Вишневые горы, Южный Урал); изотопная система Sr ряде межлабораторных природных образцов апатита и во внутрилабораторных пробах апатита (из апатит-карбонатной жилы Слюдяногорского месторождения, Иркутская область, и из карбонатитов Ильменогорского массива, Южный Урал).

Метод

Метод. Исследование проведено на многоколлекторном масс-спектрометре с индуктивно-связанной плазмой Neptune Plus (ThermoFisher) с приставкой для лазерной абляции NWR 213 (ESI), размещенном в помещении класса чистоты 7 ИСО в ЦКП “Геоаналитик” (ИГГ УрО РАН, г. Екатеринбург). Результаты. В работе описаны методические подходы для изучения изотопных систем Sm/Nd и Sr в природных фосфатных и силикатных минералах методом масс-спектрометрии с индуктивно-связанной плазмой с лазерной абляцией, реализованные на оборудовании ЦКП “Геоаналитик” (ИГГ УрО РАН, г. Екатеринбург). Проведена сравнительная характеристика результатов с литературными данными по исследованию межлабораторных природных образцов, получено удовлетворительное совпадение данных. По разработанным методикам анализа были изучены образцы апатита (анализ Sr изотопной системы) и образцы апатита, монацита, титанита (анализ Sm/Nd изотопной системы). Заключение. Проделанная методическая работа по анализу изотопных систем Sm/Nd и Sr рекомендована для изучения различных минералов: апатит, титанита, алланит, монацит (анализ Sm/Nd изотопной системы); апатит (анализ Sr изотопной системы). Достигнутые погрешности анализа позволяют использовать результаты для интерпретаций различных геохимических процессов.

Research subject

Research subject. The Sm/Nd isotope system was investigated using inter-laboratory natural samples of apatite, titanite, allanite, monazite, as well as intra-laboratory samples of apatite (from carbonatites, Ilmenogorsk massif, Ural), monazite (from pegmatites of the Aduy granite massif and its framing, Middle Urals) and titanite (from calcite veins, Saranov skoye chromite deposit, Middle Urals and from alkaline pegmatite, Shpat mine, Vishnevy mountains, South Urals). The Sr isotope system was investigated using inter-laboratory natural apatite samples and intra-laboratory apatite samples (from the apatite-carbonate vein, Slyudyanogorskoe deposit, Irkutsk region and from carbonatites, Ilmenogorsk massif, Ural).

Methods

Methods. The research was carried using a Neptune Plus multicollector mass spectrometer with inductively coupled plasma (ThermoFisher) equipped with an NWR 213 (ESI) laser ablation attachment, located in a room of ISO class 7 at the “Geoanalyst” Center for Collective Use (IGG Ural Branch of the Russian Academy of Sciences, Ekaterinburg). Results. The article describes methodological approaches for studying Sm/Nd and Sr isotope systems in natural phosphate and silicate minerals by inductively coupled plasma mass spectrometry with laser ablation, implemented on the equipment of the Center for Collective Use “Geoanalyst” (IGG Ural Branch of the Russian Academy of Sciences, Ekaterinburg). A comparative analysis of the obtained results with those reported in literature showed their satisfactory agreement. The developed analytical approaches were used to study apatite samples (analysis of the Sr isotope system) and those of apatite, monazite, titanite (analysis of the Sr isotope system). Conclusions. The developed approaches to the analysis of Sm/Nd and Sr isotopic systems can be recommended for investigating such minerals, as apatite, titanite, allanite, monazite (analysis of the Sm/Nd isotope system); apatite (analysis of the Sr isotope system). The achieved analysis errors allow the results to be used for interpreting various geochemical processes.

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The authors declare that there are no conflicts of interest present.