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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">vestich</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия химических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Chemical Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8331</issn><issn pub-type="epub">2524-2342</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8331-2021-57-3-286-</article-id><article-id custom-type="elpub" pub-id-type="custom">vestich-664</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>АНАЛИТИЧЕСКАЯ ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ANALYTICAL CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>Экстракционная пробоподготовка при хроматографическом определении остаточных количеств пенициллинов кислотной природы в молоке</article-title><trans-title-group xml:lang="en"><trans-title>Extraction sample preparation for chromatographic determination of residual quantities of acidic penicillins in milk</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>Полоневич</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Polonevich</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полоневич Анна Геннадьевна – ведущий химик; соискатель кафедры аналитической химии БГУ</p><p>ул. Академическая, 8, 220012, Минск</p><p>ул. Ленинградская, 14, 220030, Минск</p></bio><bio xml:lang="en"><p>Anna G. Polonevich – Leading Chemist; Doctoral student at the Department of analytical chemistry of Belarusian State University</p><p>8, Akademicheskaya Str., 220012, Minsk</p><p>14, Leningradskaya Str., 220030, Minsk </p></bio><email xlink:type="simple">gannapalanevich@gmail.com</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>Лещев</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Leschev</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лещев Сергей Михайлович – д-р хим. наук, профессор</p><p>ул. Ленинградская, 14, 220030, Минск</p></bio><bio xml:lang="en"><p>Sergey M. Leschev – D. Sc. (Chemistry), Professor</p><p>14, Leningradskaya Str., 220030, Minsk </p></bio><email xlink:type="simple">leschev.sergey54@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полянских</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Palianskikh</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полянских Елена Ильинична – канд. хим. наук, ст. науч. сотрудник</p><p>ул. Академическая, 8, 220012, Минск</p></bio><bio xml:lang="en"><p>Alena I. Palianskikh – Ph. D. (Chemistry), Senior Researcher</p><p>8, Akademicheskaya Str., 220012, Minsk </p></bio><email xlink:type="simple">alena.ip@gmail.com</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>Белышева</surname><given-names>Л. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Belyshava</surname><given-names>L. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белышева Людмила Леонидовна – зав. лаб. </p><p>ул. Академическая, 8, 220012, Минск</p></bio><bio xml:lang="en"><p>Liudmila L. Belyshava – Head of the Laboratory</p><p>8, Akademicheskaya Str., 220012, Minsk </p></bio><email xlink:type="simple">llbelysheva@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-практический центр гигиены</institution></aff><aff xml:lang="en"><institution>Scientific Practical Center of Hygiene</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>03</day><month>09</month><year>2021</year></pub-date><volume>57</volume><issue>3</issue><fpage>286</fpage><lpage>293</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Полоневич А.Г., Лещев С.М., Полянских Е.И., Белышева Л.Л., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Полоневич А.Г., Лещев С.М., Полянских Е.И., Белышева Л.Л.</copyright-holder><copyright-holder xml:lang="en">Polonevich A.G., Leschev S.M., Palianskikh A.I., Belyshava L.L.</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://vestichem.belnauka.by/jour/article/view/664">https://vestichem.belnauka.by/jour/article/view/664</self-uri><abstract><p>Изучено распределение шести пенициллинов кислотного типа (пенициллина G, пенициллина V, оксациллина, клоксациллина, нафциллина, диклоксациллина) в экстракционных системах хлороформ–водные растворы сульфата аммония. Полученные значения коэффициентов распределения пенициллинов продемонстрировали эффективность применения сульфата аммония в качестве высаливателя. На основании полученных данных разработан способ пробоподготовки молока для количественного определения остаточного содержания шести пенициллинов кислотного типа.</p></abstract><trans-abstract xml:lang="en"><p>The distribution of six acid-type penicillins (penicillin G, penicillin V, oxacillin, cloxacillin, nafcillin, dicloxacillin) in the extraction systems of chloroform–aqueous solutions of ammonium sulfate was studied. The reported distribution coefficients values of penicillins demonstrated the effectiveness of using ammonium sulfate as a salting-out agent. Based on the data obtained, a procedure for milk sample preparation was developed for the quantification of the residual content of six acid-type penicillins.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>экстракция</kwd><kwd>высаливание</kwd><kwd>коэффициенты распределения</kwd><kwd>пенициллины кислотного типа</kwd><kwd>высокоэффективная жидкостная хроматография</kwd><kwd>масс-спектрометрия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>extraction</kwd><kwd>salting-out</kwd><kwd>distribution coefficients</kwd><kwd>acid type penicillins</kwd><kwd>high-performance liquid chromatography</kwd><kwd>mass spectrometry</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">О безопасности молока и молочной продукции : ТР ТС 033/2013 : принят 09.10.2013 : вступ. в силу 01.05.2014 / Совет Евраз. экон. комис. – Минск : Энергопресс, 2014. – 191 с.</mixed-citation><mixed-citation xml:lang="en">TR [Customs Union Technical Regulation] TS 033/2013. 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