<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/2227-2925-2019-9-3-376-384</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-210</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>ХИМИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>Изучение сорбции ионов Сe(III) хелатообразующим синтетическим сорбентом на основании сополимера стирола с малеиновым ангидридом и м-аминофенола</article-title><trans-title-group xml:lang="en"><trans-title>Study of Ce(III) sorption by a chelating synthetic sorbent based on a copolymer of styrene with maleic anhydride and m-aminophenol</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>Алиева</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Alieva</surname><given-names>A. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры экологической химии,</p><p>г. Баку</p></bio><bio xml:lang="en"><p>Postgraduate Student, Ecological Chemistry Department,</p><p>Baku</p></bio><email xlink:type="simple">nermin.efendiyeva@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>Гусейнов</surname><given-names>Ф. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Huseynov</surname><given-names>F. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.х.н., заместитель декана факультета экологии и почвоведения, преподаватель кафедры экологической химии, </p><p>г. Баку</p></bio><bio xml:lang="en"><p>Ph.D. (Chemistry), Deputy Dean of the Faculty of Ecology and Soil Science, Lecturer, Ecological Chemistry Department,</p><p>Baku</p></bio><email xlink:type="simple">fatali_h@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>Эюбова</surname><given-names>Э. Дж.</given-names></name><name name-style="western" xml:lang="en"><surname>Eyyubova</surname><given-names>E. J.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, старший лаборант кафедры аналитической химии,</p><p>г. Баку</p></bio><bio xml:lang="en"><p>Postgraduate Student, Analytical Chemistry Department,</p><p>Baku</p></bio><email xlink:type="simple">esmira024@yahoo.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>Шамилов</surname><given-names>Н. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Shamilov</surname><given-names>N. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.х.н., профессор, декан факультета экологии и почвоведения,</p><p>г. Баку</p></bio><bio xml:lang="en"><p>Dr. Sci. (Chemistry), Professor, Dean of the Faculty of Ecology and Soil Science,</p><p>Baku</p></bio><email xlink:type="simple">nshamilov@yandex.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>Чырагов</surname><given-names>Ф. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Chyragov</surname><given-names>F. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.х.н., профессор, заведующий кафедрой аналитической химии,</p><p>г. Баку</p></bio><bio xml:lang="en"><p>Dr. Sci. (Chemistry), Professor, Dean of the Faculty of Ecology and Soil Science,</p><p>Baku</p></bio><email xlink:type="simple">ciraqov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Бакинский государственный университет</institution><country>Азербайджан</country></aff><aff xml:lang="en"><institution>Baku State University</institution><country>Azerbaijan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>06</day><month>10</month><year>2019</year></pub-date><volume>9</volume><issue>3</issue><fpage>376</fpage><lpage>384</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Алиева А.Ф., Гусейнов Ф.Э., Эюбова Э.Д., Шамилов Н.Т., Чырагов Ф.М., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Алиева А.Ф., Гусейнов Ф.Э., Эюбова Э.Д., Шамилов Н.Т., Чырагов Ф.М.</copyright-holder><copyright-holder xml:lang="en">Alieva A.F., Huseynov F.E., Eyyubova E.J., Shamilov N.T., Chyragov F.M.</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://vuzbiochemi.elpub.ru/jour/article/view/210">https://vuzbiochemi.elpub.ru/jour/article/view/210</self-uri><abstract><p>В данной статье представлены результаты исследования сорбции ионов церия(III) хелатообразующим синтетическим сорбентом. На основании сополимера стирола с малеиновым ангидридом и амина – м-аминофенола, синтезирован новый полимерный хелатообразующий сорбент и изучены сорбционные характеристики данного сорбента по отношению к ионам церия (III). Синтез сорбента был осуществлен в присутствии формалина, который в данном случае играет роль сшивающего агента. В ходе исследований изучены различные параметры, влияющие на сорбцию, в частности определены: оптимальное значение рН; ионная сила; время, необходимое для установления полного сорбционного равновесия; влияние начальной концентрации ионов церия (III) на процесс сорбции. Исследования показали, что максимальная сорбционная емкость сорбента по отношению к ионам церия (III) составляет 540 мг/г при оптимальном значении рН = 5. В ходе изучения влияния ионной силы на процесс сорбции было установлено, что до определенного значения ионной силы – 0,2–1,0 моль/л, присутствие ионов K+ и Cl- не влияет на сорбционную емкость сорбента. Также был изучен обратный процесс десорбции и установлен оптимальный элюент с использованием различных минеральных кислот одинаковой концентрации: 0,5 М растворы HCl, HNO3, H2SO4, CH3COOH. Установлено, что наилучшую десорбирующую способность по отношению к ионам церия проявляет 0,5 моль/л раствор HNO3. Структура синтезированного сорбента, присутствие тех или иных функциональных групп была исследована методом инфракрасной спектроскопии в области от 400 до 4000 см-1 .</p></abstract><trans-abstract xml:lang="en"><p>In the present article the results of a study for the sorption of cerium (III) ions by a chelating synthetic sorbent are presented. Based on a copolymer of styrene with maleic anhydride and m-aminophenol, a new polymer chelating sorbent was synthesised and its sorption characteristics were studied with respect to cerium (III) ions. The synthesis of the sorbent was carried out in the presence of formalin acting as a crosslinking agent. In the course of the studies, various parameters affecting sorption were determined: optimal pH value; ionic strength; the time of complete sorption equilibrium; the effect of the initial concentration of cerium (III) ions on the sorption process. Studies have shown the maximum sorption capacity of the sorbent with respect to cerium (III) ions to be equal to 540 mg/g at pH = 5. In the course of studying the influence of ionic strength on the sorption process up to a certain value of ionic strength (0.2-1.0 mol/L), the presence of K+ and Clions was established to have no effect on the sorption capacity of the sorbent. The reverse desorption process was also studied and the optimal eluent was established using various mineral acids of the same concentration: 0.5 M solutions of HCl, HNO3, H2SO4 and CH3COOH. HNO3 solution of the 0.5 mol/L concentration demonstrated the best desorption ability with respect to cerium ions. The structure of the synthesised sorbent and the presence of certain functional groups was investigated by IR spectroscopy in the region from 400 to 4000 cm-1.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сорбция</kwd><kwd>церий(III)</kwd><kwd>хелатообразующий сорбент</kwd><kwd>параметры процесса</kwd><kwd>десорбция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sorption</kwd><kwd>cerium (III)</kwd><kwd>chelating sorbent</kwd><kwd>process parameters</kwd><kwd>desorption</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">Abiman P., Wildgoose G.G., Crossley A., Compton R.G. Quantitative studies of metal ion adsorption on a chemically modified carbon surface: Adsorption of Cd(II) and Hg(II) on glutathione modified carbon // Electroanalysis. 2009. Vol. 21. No. 8. P. 897–903. DOI: 10.1002/elan.200804519</mixed-citation><mixed-citation xml:lang="en">Abiman P., Wildgoose G.G., Crossley A., Compton R.G. Quantitative studies of metal ion adsorption on a chemically modified carbon surface: Adsorption of Cd(II) and Hg(II) on glutathione modified carbon. Electroanalysis. 2009, vol. 21, no. 8, pp. 897–903. DOI: 10.1002/elan.200804519</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Wasewar K.L., Kumar P., Chand S., Padmini B.N., Teng T.T. Adsorption of Cadmium ions From Aqueous Solution Using Granular Activated Carbon and Activated Clay // Clean – Soil, Air, Water. 2010. Vol. 38. Issue 7. P. 649–656. DOI: 10/1002/clen.201000004</mixed-citation><mixed-citation xml:lang="en">Wasewar K.L., Kumar P., Chand S., Padmini B.N., Teng T.T. Adsorption of Cadmium ions From Aqueous Solution Using Granular Activated Carbon and Activated Clay. Clean – Soil, Air, Water. 2010, vol. 38, issue 7, pp. 649–656. DOI: 10/1002/clen.201000004</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Cao Ch.-Y., Qu J., Wei F., Liu H., Song W.-G. Superb Adsorption Capacity and Mechanism of Flowerlike Magnesium Oxide Nanostructures for Lead and Cadmium Ions // Applied Materials Interfaces. 2012. Vol. 4. Issue 8. P. 4283–4287. DOI: 10.1021/am300972z</mixed-citation><mixed-citation xml:lang="en">Cao Ch.-Y., Qu J., Wei F., Liu H., Song W.-G. Superb Adsorption Capacity and Mechanism of Flowerlike Magnesium Oxide Nanostructures for Lead and Cadmium Ions. Applied Materials Interfaces. 2012, vol. 4, issue 8, pp. 4283–4287. DOI: 10.1021/am300972z</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Cheraghi E., Ameri E., Moheb A. Adsorption of Cadmium Ions from Aqueous Solutions Using Sesame as a Low-cost Biosorbent: kinetics and equilibrium Studies // International Journal of Environmental Science and Technology. 2015. Vol. 12. Issue 8. P. 2579–2592.</mixed-citation><mixed-citation xml:lang="en">Cheraghi E., Ameri E., Moheb A. Adsorption of Cadmium Ions from Aqueous Solutions Using Sesame as a Low-cost Biosorbent: kinetics and equilibrium Studies. International Journal of Environmental Science and Technology. 2015, vol. 12, issue 8, pp. 2579–2592.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Srivastava V.C., Mall I.D., Mishra I.M. Removal of Cadmium (II) and Zn (II) Metal Ions from Binary Aqueous Solution by Rice Husk Ash // Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2008. Vol. 312. Issue 2-3. P. 172–184. https://doi.org/10.1016/j.colsurfa.2007.06.048</mixed-citation><mixed-citation xml:lang="en">Srivastava V.C., Mall I.D., Mishra I.M. Removal of Cadmium (II) and Zn (II) Metal Ions from Binary Aqueous Solution by Rice Husk Ash. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2008, vol. 312, issue 2–3, pp. 172–184. https://doi.org/10.1016/j.colsurfa.2007.06.048</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Rao R.A.K., Kashifuddin M. Adsorption Studies of Cd(II) on Ball Clay: Comparison with Other Natural Clays // Arabian Journal of Chemistry. 2016. Vol. 9. P. S1233–S1241. 2012. DOI: 10.1016/j.arabjc.2012.01.010</mixed-citation><mixed-citation xml:lang="en">Rao R.A.K., Kashifuddin M. Adsorption Studies of Cd(II) on Ball Clay: Comparison with Other Natural Clays. Arabian Journal of Chemistry. 2016, vol. 9, pp. S1233–S1241. DOI: 10.1016/j.arabjc.2012.01.010</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Halili L., Mele A., Arbneshi T., Halili A., Mehmeti V., Jusufi K., Berisha A. The evaluation of the dithizone performance as a complexing reagent for supercritical CO2 extraction of heavy metals from aqueous solutions // Rad Conference Proceedings. 2016. Vol. 4. P. 114–116. DOI: 10.21175/RadProc.2016.27</mixed-citation><mixed-citation xml:lang="en">Halili L., Mele A., Arbneshi T., Halili A., Mehmeti V., Jusufi K., Berisha A. The evaluation of the dithizone performance as a complexing reagent for supercritical CO2 extraction of heavy metals from aqueous solutions. Rad Conference Proceedings. 2016, vol. 4, pp. 114–116. DOI: 10.21175/RadProc.2016.27</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Li X.-J., Yan C.-J., Luo W.-J., Gao Q., Zhou Q, Liu C., Zhou S. Exceptional cerium(III) adsorption performance of poly(acrylic acid) brushes-decorated attapulgite with abundant and highly accessible binding sites // Chemical Engineering Journal. 2016. Vоl. 284. P. 333–342. DOI: 10.1016/j.cej.2015.09.003</mixed-citation><mixed-citation xml:lang="en">Li X.-J., Yan C.-J., Luo W.-J., Gao Q., Zhou Q, Liu C., Zhou S. Exceptional cerium(III) adsorption performance of poly(acrylic acid) brushes-decorated attapulgite with abundant and highly accessible binding sites. Chemical Engineering Journal. 2016, vоl. 284, pp. 333–342. DOI: 10.1016/j.cej.2015.09.003</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Hema M., Srinivasan K. Removal of Cadmium(II) from Wastewater Using Activated Carbon Prepared from Agro Industrial By-products // Journal of Environmental Engineering and Science. 2011. Vol. 53. Issue 4. P. 387–396.</mixed-citation><mixed-citation xml:lang="en">Hema M., Srinivasan K. Removal of Cadmium(II) from Wastewater Using Activated Carbon Prepared from Agro Industrial By-products. Journal of Environmental Engineering and Science. 2011, vol. 53, issue 4, pp. 387–396.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Kuang X., Shao J., Chen A., Luo S., Peng L., Wu G., Gu J.-D. Effects of Bloom-forming Cyanobacterial Extracelluar Polymeric Substances on the Adsorption of Cadmium onto kaolinite // Springer Plus. 2016. Vol. 5. P. 542–553. DOI: 10.1186/s40064-016-2191-8</mixed-citation><mixed-citation xml:lang="en">Kuang X., Shao J., Chen A., Luo S., Peng L., Wu G., Gu J.-D. Effects of Bloom-forming Cyanobacterial Extracelluar Polymeric Substances on the Adsorption of Cadmium onto kaolinite. Springer Plus. 2016, vol. 5, pp. 542–553. DOI: 10.1186/s 40064- 016-2191-8</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Elkhatib E., Mahdy A.M., Sherif F., Elshemy W. Competitive Adsorption of Cadmium (II) from Aqueous Solutions onto Nanoparticles of Water Treatment Residual // Journal of Nanomaterials. 2016. Vol. 1. P. 10–20. DOI: 10.1155/2016/8496798</mixed-citation><mixed-citation xml:lang="en">Elkhatib E., Mahdy A.M., Sherif F., Elshemy W. Competitive Adsorption of Cadmium (II) from Aqueous Solutions onto Nanoparticles of Water Treatment Residual. Journal of Nanomaterials. 2016, vol. 1, pp. 10–20. DOI: 10.1155/2016/8496798</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Özdemir S., Gul-Guven R., Kilinc E., Dogru M., Erdogan S. Preconcentration of cadmium and nickel using the bioadsorbent Geobacillus thermoleovorans subsp. stromboliensis immobilized on Amberlite XAD4 // Microchimica Acta: 2010. Vol. 169. No. 1-2. P. 79– 85. DOI: 10.1007/s00604-010-0300-x</mixed-citation><mixed-citation xml:lang="en">Özdemir S., Gul-Guven R., Kilinc E., Dogru M., Erdogan S. Preconcentration of cadmium and nickel using the bioadsorbent Geobacillus thermoleovorans subsp. stromboliensis immobilized on Amberlite XAD-4. Microchimica Acta: 2010, vol. 169, no. 1–2, pp. 79–85. DOI: 10.1007/s00604-010-0300-x</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Zhou Q., Yan C., Luo W. Preparation of a novel carboxylate-rich wheat straw through surface graft modification for efficient separation of Ce(III) from wastewater // Materials and Design. 2016. Vol. 97. P. 195–203. DOI: 10.1016/j.matdes.2016.02.081</mixed-citation><mixed-citation xml:lang="en">Zhou Q., Yan C., Luo W. Preparation of a novel carboxylate-rich wheat straw through surface graft modification for efficient separation of Ce(III) from wastewater. Materials and Design. 2016, vol. 97, pp. 195–203. DOI: 10.1016/j.matdes.2016.02.081</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Abd El-Rehim H.A., Hegazy E.A., El-Hag Ali A. Selective Removal of Some Heavy Metal Ions from Aqueous Solution using Treated Polyethylene-g-styrene/maleic anhydride Membranes // Reactive and Functional Polymers. 2000. Vol. 43. Issue 1. P. 105–116. DOI: 10.1016/S1381-5148(99)00009-7</mixed-citation><mixed-citation xml:lang="en">Abd El-Rehim H.A., Hegazy E.A., El-Hag Ali A. Selective Removal of Some Heavy Metal Ions from Aqueous Solution using Treated Polyethyleneg-styrene/maleic anhydride Membranes. Reactive and Functional Polymers. 2000, vol. 43, issue 1, pp. 105–116. DOI: 10.1016/S1381-5148(99)00009-7</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Hasanzadeh R., Moghadam P.N., Samadi N., Synthesis and Application of Modified Poly(styrene‐ alt‐maleic anhydride) Networks as a Nano Chelating Resin for Uptake of Heavy Metal Ions // Polymers for Advanced Technologies. 2013. Vol. 24. Issue 1. P. 34–41. DOI: 10.1002/pat.3046</mixed-citation><mixed-citation xml:lang="en">Hasanzadeh R., Moghadam P.N., Samadi N., Synthesis and Application of Modified Poly(styrene‐ alt‐maleic anhydride) Networks as a Nano Chelating Resin for Uptake of Heavy Metal Ions. Polymers for Advanced Technologies. 2013, vol. 24, issue 1, pp. 34–41. DOI: 10.1002/pat.3046</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Şimşek S., Yılmaz E., Boztug A. Amine-modified Maleic Anhydride Containing Terpolymers for the Adsorption of Uranyl ion in Aqueous Solutions // Journal of Radioanalytical and Nuclear Chemistry. 2013. Vol. 298. Issue 2. P. 923–930. DOI: 10.1007/s 10967-013-2529-4</mixed-citation><mixed-citation xml:lang="en">Şimşek S., Yılmaz E., Boztug A. Aminemodified Maleic Anhydride Containing Terpolymers for the Adsorption of Uranyl ion in Aqueous Solutions. Journal of Radioanalytical and Nuclear Chemistry. 2013, vol. 298, issue 2, pp. 923–930. DOI: 10.1007/s10967-013-2529-4</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Булатов М.И., Каликин И.П. Практикум по фотометрическим и спектрофотометрическим методам анализа. 5-е изд., перераб. Л.: Химия, 1986. 432 с.</mixed-citation><mixed-citation xml:lang="en">Bulatov M.I., Kalikin I.P. Praktikum po fotometricheskim i spektrofotometricheskim metodam analiza [Practical Book on Photometric and Spectrometric Methods of Analysis]. Leningrad: Khimiya Publ., 1986, 432 p.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Алиева Р.А., Гамидов С.З., Чырагов Ф.М. Изучение сорбции ионов Zn(II) с химически модифицированным синтетическим сорбентом // Журнал химических проблем. 2007. N 2. C. 19–28.</mixed-citation><mixed-citation xml:lang="en">Alieva R.A., Gamidov S.Z., Chyragov F.M. Study of Zn(II) ion sorption with chemically modified synthetic sorbent. Zhurnal khimicheskikh problem. 2007, no. 2, pp. 19–28. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Назаренко В.А., Антонович В.П., Невская Э.М. Гидролиз металлических ионов в разбавленных растворах. М.: Атомиздат, 1979. 192 с. 20. Stuart B.H. Infrared Spectroscopy: Fundamentals and Application. Chichester, UK: John Wiley and Sons, 2004. 244 p.</mixed-citation><mixed-citation xml:lang="en">Nazarenko V.A., Antonovich V.P., Nevskaya E.M. Gidroliz metallicheskikh ionov v razbavlennykh rastvorakh [Hydrolysis of metal ions in dilute solutions]. Moscow: Atomizdat Publ., 1979, 192 p.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Stuart B.H. Infrared Spectroscopy: Fundamentals and Application. Chichester, UK: John Wiley and Sons, 2004, 244 p.</mixed-citation><mixed-citation xml:lang="en">Stuart B.H. Infrared Spectroscopy: Fundamentals and Application. Chichester, UK: John Wiley and Sons, 2004, 244 p.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
