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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">10.26896/1028-6861-2026-92-6-24-33</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-2855</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>Бинарная цветометрия в химическом анализе питьевых, природных и сточных вод: сопоставление с фотометрией</article-title><trans-title-group xml:lang="en"><trans-title>Binary colorimetry in chemical analysis of drinking, natural, and waste water: comparison with photometry</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>Арасланкин</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Araslankin</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Валерьевич Арасланкин</p><p>603022, г. Нижний Новгород, просп. Гагарина, д. 23; 431448, г. Рузаевка, ул. Станиславского, д. 26А. </p></bio><bio xml:lang="en"><p>Sergei V. Araslankin </p><p>23, prosp. Gagarina, Nizhny Novgorod, 603022; 26A, ul. Stanislavskogo, Ruzaevka, 431448</p></bio><email xlink:type="simple">araslankin@bk.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>Нипрук</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nipruk</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Оксана Валентиновна Нипрук</p><p>603022, г. Нижний Новгород, просп. Гагарина, д. 23</p></bio><bio xml:lang="en"><p>Oksana V. Nipruk </p><p>23, prosp. Gagarina, Nizhny Novgorod, 603022, Russia</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>Головина</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Golovina</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>катерина Николаевна Головина</p><p>431440, г. Рузаевка, ул. Титова, д. 16, стр. 1.</p></bio><bio xml:lang="en"><p>Ekaterina N. Golovina</p><p>16 bld. 1, ul. Titova, Ruzaevka, 431440</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский Нижегородский государственный университет им. Н. И. Лобачевского; &#13;
ООО «Экспонента»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lobachevsky Nizhny Novgorod National Research State University; &#13;
«Exponenta» LLC</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский Нижегородский государственный университет им. Н. И. Лобачевского</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lobachevsky Nizhny Novgorod National Research State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>АО «Рузхиммаш»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>«Ruzkhimmash» JSC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>04</day><month>07</month><year>2026</year></pub-date><volume>92</volume><issue>6</issue><fpage>24</fpage><lpage>33</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Арасланкин С.В., Нипрук О.В., Головина Е.Н., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Арасланкин С.В., Нипрук О.В., Головина Е.Н.</copyright-holder><copyright-holder xml:lang="en">Araslankin S.V., Nipruk O.V., Golovina E.N.</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/2855">https://www.zldm.ru/jour/article/view/2855</self-uri><abstract><p>Представлены результаты сравнительного исследования возможностей методов бинарной цветометрии и фотометрии для химического анализа питьевых, природных и сточных вод на примере определения железа (II, III), никеля (II) и меди (II). Пробоподготовка идентична для обоих рассматриваемых методов. Цифровую съемку анализируемых растворов проводили с использованием мобильного устройства в контролируемых условиях. Оценка влияния рассеянного света показала отсутствие значимого вклада в результаты цветометрических измерений. Полученные изображения обрабатывали с помощью специализированного программного средства и переводили в бинарный формат с последующим определением уровня бинаризации, используемого в качестве аналитического сигнала. Установлено, что относительные стандартные отклонения результатов, полученных методами бинарной цветометрии и фотометрии, не превышают 0,12 и 0,06 соответственно. Двухфакторный дисперсионный анализ не выявил статистически значимых различий в точности рассматриваемых методов, однако показано различие точности результатов анализа растворов с разным уровнем концентраций Fe, Ni и Cu. Установлено, что на уровне концентраций 0,10 – 2,00 мг/л Fe, 0,02 – 0,10 мг/л Ni и 0,25 – 1,50 мг/л Cu характеристики чувствительности бинарной цветометрии ожидаемо уступают фотометрии. Показано, что для цветометрического определения Fe (II, III), Ni (II) и Cu (II) на уровне концентраций, близких к пределам обнаружения указанных ионов, анализируемую воду следует концентрировать. Результаты проведенного исследования свидетельствуют о том, что бинарная цветометрия может рассматриваться в качестве доступной альтернативы в условиях отсутствия фотометра для определения Fe (II, III), Ni (II) и Cu (II) в воде.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the results of a comparative study on the applicability of binary colorimetry versus photometry in the chemical analysis of drinking, natural, and waste waters for iron (II, III), nickel (II), and copper (II) contents. Sample preparation was identical for both methods under consideration. For digital photography of the solutions analised a mobile device under controlled conditions was used. To minimize external light interference, photography was conducted in a darkened room. An assessment of the influence of scattered light showed no significant contribution to the colorimetric measurement results. The obtained images were processed using specialized software and converted to a binary format, subsequently determining the binarization threshold, which was used as the analytical signal. It was found that the relative standard deviations of the results obtained by binary colorimetry and photometry do not exceed 0.12 and 0.06, respectively. Two-way analysis of variance revealed no statistically significant differences in the accuracy of the methods under consideration. However, their difference was demonstrated at different concentration levels of Fe, Ni, and Cu. It was established that in the concentration ranges of 0.10 – 2.00 mg/L Fe, 0.02 – 0.10 mg/L Ni, and 0.25 – 1.50 mg/L Cu, the sensitivity characteristics of binary colorimetry are predictably inferior to those of photometry. It was shown that for the colorimetric determination of Fe (II, III), Ni (II), and Cu (II) at concentration levels close to the detection limits of these ions, the analyzed water sample should be preconcentrated. The results of the conducted study indicate that binary colorimetry can be considered an accessible alternative in the absence of a photometer for the determination of Fe (II, III), Ni (II), and Cu (II) in water.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цветометрия</kwd><kwd>смартфон</kwd><kwd>бинаризация</kwd><kwd>химический анализ</kwd><kwd>вода</kwd></kwd-group><kwd-group xml:lang="en"><kwd>colorimetry</kwd><kwd>smartphone</kwd><kwd>binarization</kwd><kwd>chemical analysis</kwd><kwd>water</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">Zolotov Yu. A. Methodological aspects of analytical chemistry / J. Anal. Chem. 2021. Vol. 76. No. 1. P. 1 – 14. DOI: 10.1134/s1061934821010160</mixed-citation><mixed-citation xml:lang="en">Zolotov Yu. A. Methodological aspects of analytical chemistry / J. Anal. Chem. 2021. Vol. 76. No. 1. P. 1 – 14. 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