zldmЗаводская лаборатория. Диагностика материаловIndustrial laboratory. Diagnostics of materials1028-68612588-0187ООО «Издательство «ТЕСТ-ЗЛ»zldm-355Research ArticleАНАЛИЗ ВЕЩЕСТВАSUBSTANCES ANALYSISОБ ОСОБЕННОСТЯХ СОРБЦИОННОГО КОНЦЕНТРИРОВАНИЯ Ru НА СВЕРХСШИТЫХ ПОЛИСТИРОЛАХ ПРИ АНАЛИЗЕ ГОРНЫХ ПОРОД МЕТОДОМ МАСС-СПЕКТРОМЕТРИИ С ИНДУКТИВНО-СВЯЗАННОЙ ПЛАЗМОЙOn the Specificity of Sorption Preconcentration of Ru on the Hyper-Crosslinked Polystyrene Sorbents in Analysis of Rock Samples Using Inductively Coupled Plasma -Mass SpectrometryДубенскийА. С.DubenskiyA. S.noemail@neicon.ruЯкурноваЕ. Д.IakurnovaE. D.noemail@neicon.ruСерегинаИ. Ф.SereginaI. F.noemail@neicon.ruПавловаЛ. А.PavlovaL. A.noemail@neicon.ruЦюрупаМ. П.TsyurupaM. P.noemail@neicon.ruДаванковВ. А.DavankovV. A.noemail@neicon.ruБольшовМ. А.BolshovM. A.mbolshov@mail.ru; bolshov@isan.troitsk.ruМосковский государственный университет им. М. В. ЛомоносоваRussian FederationИнститут элементоорганических соединений им. А. Н. Несмеянова РАНRussian FederationМосковский государственный университет им. М. В. Ломоносова; Институт спектроскопии РАНRussian Federation201710012017831 ч.I2128Copyright © Дубенский А.С., Якурнова Е.Д., Серегина И.Ф., Павлова Л.А., Цюрупа М.П., Даванков В.А., Большов М.А., 20172017Дубенский А.С., Якурнова Е.Д., Серегина И.Ф., Павлова Л.А., Цюрупа М.П., Даванков В.А., Большов М.А.Dubenskiy A.S., Iakurnova E.D., Seregina I.F., Pavlova L.A., Tsyurupa M.P., Davankov V.A., Bolshov M.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.zldm.ru/jour/article/view/355

В работе изучены новые сорбционные системы на основе ряда сверхсшитых полистиролов марок «НР» и «Стиросорб» для концентрирования Ru из растворов, полученных после разложения горных пород. Для извлечения Ru по обращенно-фазному механизму были впервые использованы ароматические амины (метилбензиламин (МБА), диметилбензиламин (ДМБА), дибензилметиламин (ДБМА)), а также алифатический трибутиламин (ТБА). Показано, что обратимого 60 %-ного извлечения Ru из модельного раствора удается достичь в сорбционной системе Стиро-сорб-514 - ТБА - 1 М HCl в этаноле в качестве десорбирующего агента. При анализе стандартных образцов состава (СОС) ультраосновных и основных горных пород выявлена важная роль пробоподготовки твердого образца. Обнаружено, что для количественного (100 %) извлечения Ru в выбранной сорбционной системе единственным подходящим способом переведения твердого образца в раствор является сплавление в NiS-штейн с последующим растворением штейна в «царской водке» и переведением в конц. HCl. Изучено влияние Ni при масс-спектрометрическом определении Ru по99Ru в широком интервале концентраций (20 - 2 000 мкг/л), показано, что присутствие Ni не вызывает завышения концентрации Ru. Проведенные исследования показали возможность использования сорбционной системы на основе Стиросорб-514 при определении низких содержаний Ru в образцах горных пород, что подтверждено анализом СОС ультраосновных и основных горных пород GPt-5, GPt-6 и SARM-7. Полученные данные по содержанию Ru в этих объектах совпадают с аттестованными значениями в пределах доверительного интервала.

New sorption systems based on hyper-crosslinked polystyrenes “HP” and “Stirosorb” are developed for Ru concentration from final solutions after rock decomposition. Aromatic amines (N-methylbenzylamine (MBA), N,N-dimethylbenzylamine (DMBA), N,N-dibenzylmetylamine (DBMA)) and aliphatic tributylamine (TBA) are used for the first time for Ru extraction from the solutions via reversephase mechanism. The reproducible 60% extraction of Ru from a model solution can be achieved using sorbent system Stirisorb-514, reagent TBA and eluent 1 M HCl in ethanol. An important role of solid sample processing in analysis of CRM (Certified Reference Materials) of ultrabasic and basic rock samples is demonstrated. Reproducible quantitative (100%) extraction of Ru using the aforementioned system is achieved only via NiS fire-assay of a solid rock sample followed by the matte digestion in aq. reg. and final dilution in HClconc. The reasons for remarkable difference in the efficiency of Ru extraction from model solutions and final solutions after solid rock samples digestion are investigated. The interference effect of Ni upon MS determination of Ru by99Ru is studied in a wide range of Ni concentration (20 -2000 ^g/liter). The interference effect of Ni on the signal of Ru is considered negligible. The obtained results proved the possibility of using developed scheme for determination of Ru in rock samples. The developed extraction scheme is validated in analysis of CRMs: GPt-5, GPt-6 and SARM-7. The results of Ru determination in three CRM using the developed scheme match the certified values within the range of experimental errors.

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