zldmЗаводская лаборатория. Диагностика материаловIndustrial laboratory. Diagnostics of materials1028-68612588-0187ООО «Издательство «ТЕСТ-ЗЛ»10.26896/1028-6861-2026-92-3-27-32zldm-2757Research ArticleАНАЛИЗ ВЕЩЕСТВАSUBSTANCES ANALYSISПроизводное салицилового альдегида как новый реагент для спектрофотометрического определения меди (II)Salicylic aldehyde derivative as a new reagent for spectrophotometric determination of copper (II)МаммадоваЧ. А.MammadovaС. A.

Чинара Аллахверди кызы Маммадова

z1148, г. Баку, ул. З. Халилова, д. 23

Chinara Allahverdi Mammadova

23, Z. Khalilova ul., Baku, Az1148

chinara.mamedova.86@mail.ruАлиеваФ. С.AliyevaF. S.

Фаргана Сафар кызы Алиева

z1148, г. Баку, ул. З. Халилова, д. 23

Fargana Safar Aliyeva

23, Z. Khalilova ul., Baku, Az1148

ГаджиеваС. Р.HajiyevaS. R.

Севиндж Рафик кызы Гаджиева

z1148, г. Баку, ул. З. Халилова, д. 23

Sevinj Rafik Hajiyeva

23, Z. Khalilova ul., Baku, Az1148

ЧыраговФ. М.ChyragovF. M.

Фамиль Муса оглы Чырагов

z1148, г. Баку, ул. З. Халилова, д. 23

Famil Musa Chyragov

23, Z. Khalilova ul., Baku, Az1148

Бакинский государственный университет, химический факультетАзербайджанBaku State University, Faculty of ChemistryAzerbaijan2026260320269232732Copyright © Маммадова Ч.А., Алиева Ф.С., Гаджиева С.Р., Чырагов Ф.М., 20262026Маммадова Ч.А., Алиева Ф.С., Гаджиева С.Р., Чырагов Ф.М.Mammadova С.A., Aliyeva F.S., Hajiyeva S.R., Chyragov F.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.zldm.ru/jour/article/view/2757

Описан простой и экспрессный спектрофотометрический метод определения ионов Cu (II) с использованием нового аналитического реагента [(2-гидроксибензальдегид)-3-изатин]-бисгидразона (R), полученного в результате конденсации салицилового альдегида с гидразоном изатина. Состав и строение синтезированного реагента подтверждены методами ЯМР-спектроскопии и рентгеноструктурного анализа (РСА). Изучено комплексообразование Cu (II) с R в присутствии диантипирилфенилметана (ДАФМ) и 8-оксихинолина (Ox), определены оптимальные условия комплексообразования (λопт, pHgпт) однородно- (Cu (II)-R) и разнолигандных (Cu (II)-R-Ox и Cu (II)-R-ДАФМ) комплексов. Установлены молярные коэффициенты поглощения комплексов и область подчинения закону Бера. Стехиометрическое соотношение компонентов в комплексах найдено методами изомолярных серий, непрерывных изменений (метод Джоба) и сдвига равновесия. Изучено влияние ряда посторонних ионов и маскирующих веществ на образование комплексов Cu (II). Предложенная методика апробирована при определении микроколичеств меди в различных образцах овощей (перец, лук и капуста).

A simple, rapid spectrophotometric method for determination of Cu (II) ions is described using a new analytical reagent — [(2-hydroxybenzaldehyde)-3-isatin]-bishydrazone (R), which is a product obtained by condensation of salicylic aldehyde with isatin hydrazone. NMR spectroscopy and X-ray diffraction analysis were used to confirm the composition and structure of the synthesized reagent. Complexation of Cu (II) with R in the presence of diantipyrylphenylmethane (DAPM) and 8-oxyquinoline (Ox) was also studied spectrophotometrically. Optimum conditions for complexation (λopt, pHopt) of homogeneous (Cu (II)-R) and mixed-ligand (Cu (II)-R-Ox and Cu (II)-R-DAPM) complexes were determined. The molar absorption coefficients of the complexes and the region of subordination to Beer’s law were established. The stoichiometric ratio of the components in the complexes was confirmed by the methods of isomolar series, continuous changes (Job’s method), and equilibrium shift. The effect of some foreign ions and masking substances on the formation of Cu (II) complexes was studied. The proposed method was used to determine trace amounts of copper in various vegetable samples (pepper, onion and cabbage).

салициловый альдегидгидразонкомплексообразование меди (II)спектрофотометрическое определениедиантипирилфенилметан8-оксихинолинразнолигандные комплексыsalicylic aldehydehydrazonecopper (II) complexationspectrophotometric determinationdiantipyrylphenylmethane8-oxyquinolinemixed-ligand complexesРабота выполнена за счет средств бюджета Бакинского государственного университета.ReferencesLocatelli M., Farina C. Role of copper in central nervous system physiology and pathology / Neural Regener. Res. 2025. Vol. 20. No. 4. P. 1058 – 1068. DOI: 10.4103/nrr.nrr-d-24-00110Locatelli M., Farina C. Role of copper in central nervous system physiology and pathology / Neural Regener. Res. 2025. Vol. 20. No. 4. P. 1058 – 1068. DOI: 10.4103/nrr.nrr-d-24-00110Brewer G. J., Yuzbasiyan-Gurkan V. Wilson disease / Medicine (Baltimore). Vol. 71. No. 3. P. 139 – 164. DOI: 10.1097/00005792-199205000-00004Brewer G. J., Yuzbasiyan-Gurkan V. Wilson disease / Medicine (Baltimore). Vol. 71. No. 3. P. 139 – 164. 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The authors declare that there are no conflicts of interest present.