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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2018-84-4-12-15</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-712</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>АНАЛИЗ ВЕЩЕСТВА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SUBSTANCES ANALYSIS</subject></subj-group></article-categories><title-group><article-title>ОПРЕДЕЛЕНИЕ УЛЬТРАНИЗКИХ СОДЕРЖАНИЙ УРАНА И ТОРИЯ В АНТИЧНОМ СВИНЦЕ МЕТОДОМ МАСС-СПЕКТРОМЕТРИИ С ИНДУКТИВНО-СВЯЗАННОЙ ПЛАЗМОЙ ПОСЛЕ ИХ ВЫДЕЛЕНИЯ МЕТОДОМ ЖИДКОСТНОЙ ХРОМАТОГРАФИИ СО СВОБОДНОЙ НЕПОДВИЖНОЙ ФАЗОЙ</article-title><trans-title-group xml:lang="en"><trans-title>ICP-MS DETERMINATION OF ULTRALOW CONTENTS OF URANIUM AND THORIUM IN ANTIQUE LEAD AFTER THEIR ISOLATION BY COUNTERCURRENT CHROMATOGRAPHY (LIQUID-CHROMATOGRAPHY WITH A FREE STATIONARY PHASE)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федюнина</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedyunina</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Наталья Николаевна Федюнина </p><p>Москва</p></bio><bio xml:lang="en"><p>Natalia N. Fedyunina </p><p>Dubna</p></bio><email xlink:type="simple">nataliafedyunina@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федотов</surname><given-names>П. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedotov</surname><given-names>P. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петр Сергеевич Федотов </p><p>Москва</p></bio><bio xml:lang="en"><p>Petr S. Fedotov </p><p>Dubna</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Философов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Filosofov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Владимирович Философов </p><p>г. Дубна</p></bio><bio xml:lang="en"><p>Dmitry V. Filosofov </p><p>Dubna</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якушев</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakushev</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Александрович Якушев </p><p>г. Дубна</p></bio><bio xml:lang="en"><p>Evgeny A. Yakushev </p><p>Dubna</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСиС»; &#13;
Институт геохимии и аналитической химии им. В. И. Вернадского РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology «MISIS»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology «MISIS»; &#13;
V. I. Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Объединенный институт ядерных исследований</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Joint Institute for Nuclear Research</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>14</day><month>05</month><year>2018</year></pub-date><volume>84</volume><issue>4</issue><fpage>12</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Федюнина Н.Н., Федотов П.С., Философов Д.А., Якушев Е.А., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Федюнина Н.Н., Федотов П.С., Философов Д.А., Якушев Е.А.</copyright-holder><copyright-holder xml:lang="en">Fedyunina N.N., Fedotov P.S., Filosofov D.V., Yakushev E.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.zldm.ru/jour/article/view/712">https://www.zldm.ru/jour/article/view/712</self-uri><abstract><p>Предложен методический подход к снижению предела обнаружения урана и тория в античном свинце, включающий выделение элементов в экстракционной системе на основе тетрафенилметилендифосфиндиоксида и их последующее МС-ИСП определение. В условиях статической экстракции изучено влияние времени контакта фаз, кислотности среды и концентрации экстрагента на извлечение урана и тория из азотнокислых растворов. Показано, что матричный элемент — свинец — не извлекается в используемой экстракционной системе. Полученные результаты позволили выбрать и оптимизировать условия концентрирования урана и тория и их элюирования водным раствором этидроновой кислоты в режиме жидкостной хроматографии со свободной неподвижной фазой. Установлено, что содержание урана и тория в образце античного свинца, поднятого со дна океана, находится на уровне ниже 10–10 % масс.</p></abstract><trans-abstract xml:lang="en"><p>A methodical approach to reduction of the limit of uranium and thorium detection in antique lead is proposed. The approach includes separation of the elements in the extraction system based on tetraphenylmethylene diphosphine dioxide and their subsequent ICP-MS determination. The influence of phase contact time, medium acidity, concentration of the extractant on the extraction of uranium and thorium from nitric acid solutions was studied under conditions of batch extraction. It is shown that the matrix element (lead) is not recovered in the considered extraction system. We specified and optimized conditions for concentration of uranium and thorium and their elution with an aqueous solution of etidronic acid using countercurrent chromatography. The content of uranium and thorium in the sample of antique lead raised from the ocean floor are less than 10–10 % wt.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>масс-спектрометрия с индуктивно-связанной плазмой</kwd><kwd>концентрирование</kwd><kwd>жидкостная хроматография со свободной неподвижной фазой</kwd><kwd>уран</kwd><kwd>торий</kwd><kwd>античный свинец</kwd></kwd-group><kwd-group xml:lang="en"><kwd>inductively coupled plasma mass-spectrometry</kwd><kwd>preconcentration</kwd><kwd>countercurrent chromatography</kwd><kwd>uranium</kwd><kwd>thorium</kwd><kwd>antique lead.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Российский фонд фундаментальных исследований (проект № 16-33-01096 мол_а.).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Leonard D. S., Grinberg P., Weber P., et al. 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