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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-1725</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>АННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ABSTRACTS ENGLISH-LANGUAGE ARTICLES</subject></subj-group></article-categories><title-group><article-title>Спектрофотометрические и жидкостные хроматографические методы количественного определения антибактериального флуоресцентного  красителя (флоксина Б) в образцах стоматологических таблеток  и зубной пасты</article-title><trans-title-group xml:lang="en"><trans-title>Spectrophotometric and liquid chromatographic methods  for quantification of antibacterial fluorescent dye (phloxine B)  in dental disclosing tablets and toothpaste samples</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>Alghamdi</surname><given-names>A. F.</given-names></name><name name-style="western" xml:lang="en"><surname>Alghamdi</surname><given-names>Ali F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Медина</p></bio><bio xml:lang="en"><p>Medina</p></bio><email xlink:type="simple">aghamdi@taiabhu.edu.sa</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Колледж естественных наук Университета Тайба</institution></aff><aff xml:lang="en"><institution>Chemistry department, College of Science, Taibah University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>18</day><month>11</month><year>2024</year></pub-date><volume>91</volume><issue>6</issue><fpage>919</fpage><lpage>919</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Alghamdi A.F., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Alghamdi A.F.</copyright-holder><copyright-holder xml:lang="en">Alghamdi A.F.</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://zhps.ejournal.by/jour/article/view/1725">https://zhps.ejournal.by/jour/article/view/1725</self-uri><abstract><p>Методы двухлучевой УФ-видимой спектрофотометрии и высокоэффективной жидкостной хроматографии (ВЭЖХ) использованы для определения антибактериального флуоресцентного красителя флоксина Б в стоматологических препаратах. В видимом диапазоне 400–800 нм спектрофотометрический сигнал получен при λmax = 539 нм. В процессе ВЭЖХ использован C-18 (5 мкм) с УФдетектором при 254 нм, скоростью потока 1.5 мл/мин, временем удерживания 0.635 мин и водой, ацетонитрилом и 2-пропанолом в качестве подвижной фазы. Для анализа производительности ВЭЖХ и двухлучевой УФ-видимой спектрофотометрии использованы несколько параметров, в том числе стабильность, пределы обнаружения и количественного определения, калибровочные кривые и повторяемость. Исследование сосредоточено на повторяемости спектрофотометрических и ВЭЖХ процедур для 8×10–6 и 5×10–6 моль/л флоксина Б. Стандартное отклонение (STD) для десяти спектрофотометрических измерений и восьми ВЭЖХ-измерений составило ±0.0004 и ±2.487 с относительным стандартным отклонением (RSD%) 0.048 и 1.05%. В течение 90-мин периода анализа спектрофотометрические и ВЭЖХ-сигналы для 8×10–6 и 5×10–6 моль/л флоксина Б исключительно стабильны. Диапазоны калибровочных кривых 1×10–6–2×10–5 моль/л для спектрофотометрии и 1×10–5–1×10–4 моль/л для ВЭЖХ. В рассматриваемых диапазонах концентраций получены линейные зависимости с коэффициентами корреляции (r2) 0.9995 для спектрофотометрических и 0.99 для ВЭЖХ-измерений. Пределы обнаружения флоксина Б составили 1.24×10–8 моль/л (0.0103 ppm) и 8.25×10–7 моль/л (0.068 ppm) с использованием двухлучевой УФ-видимой спектрофотометрии и методов ВЭЖХ. В случае определения красителя флоксина Б, который добавлен в стоматологические таблетки и образцы зубной пасты, эти методы показывают степень извлечения 95–111%.</p></abstract><trans-abstract xml:lang="en"><p>Double beam UV-visible spectrophotometry and high-performance liquid chromatography (HPLC) techniques have been used to determine the antibacterial fluorescent phloxine B dye in dental preparations. In the visible wavelength range of 400 to 800 nm, the spectrophotometric signal was obtained at λmax = 539 nm. The HPLC process used C-18 (5 μm) with a UV detector at 254 nm, 1.5 mL/min flow rate, 0.635 min retention time, and water, acetonitrile, and 2-propanol as the mobile phase. Several parameters have been used to analyze the performance of the HPLC and double-beam UV-visible spectrophotometry apparatuses, including stability, detection and quantification limits, calibration curves, and repeatability. The study focused on the repeatability of spectrophotometric and HPLC procedures for 8×10–6 and 5×10–6 mol/L of phloxine B. The results showed that the standard deviation (STD) for ten spectrophotometric measurements and eight HPLC measurements, respectively, was ±0.0004 and ±2.487 with relative standard deviation (RSD%) of 0.048 and 1.05%. Throughout the 90 minutes of the analysis period, the spectrophotometric and HPLC signals for 8×10–6 and 5×10–6 mol/L of phloxine B were shown to be exceptionally stable. The ranges of the calibration curves were 1×10-6–2×10–5 mol/L for the spectrophotometry and 1×10–5–1×10–4 mol/L for HPLC. Within the concentration ranges under consideration, they were assigned linear relations with correlation coefficients (r2) of 0.9995 for spectrophotometric and 0.99 for HPLC measurements. The detection limits for phloxine B were found to be 1.24×10–8 mol/L (0.0103 ppm) and 8.25×10–7 mol/L (0.068 ppm), respectively, using double beam UV-visible spectrophotometry and HPLC methods. These techniques use recovery rates ranging from 95 to 111% to determine the phloxine B dye that has been spiked in disclosing tablets and toothpaste samples. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>флоксин Б</kwd><kwd>стоматологическая таблетка</kwd><kwd>высокоэффективная жидкостная хроматография</kwd><kwd>спектрофотометрия</kwd><kwd>зубная паста</kwd></kwd-group><kwd-group xml:lang="en"><kwd>phloxine B</kwd><kwd>disclosing tablets</kwd><kwd>HPLC</kwd><kwd>spectrophotometry</kwd><kwd>toothpastes</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">The author would like to thank Ahmad Alghamdi, Abdulaziz Althobyani,  and Abdulaziz A. Alghamdi for their assistance in completing this research.</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">R. W. 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